Current JTRP Research

SPR-3855: Reliability Evaluation of Mechanically Stabilized Earth (MSE) Wall Straps

Principal Investigators - Lee, Seokcheon, Chun, Hyonho
Start Date - 01/01/2014

This project will review the quality assurance for acceptance of Mechanically Stabilized Earth (MSE) Wall straps used to support embankments in bridge constructions. Objectives include:

  1. Determine whether the strap can be accepted using sample displacement data under a certain pull force.
  2. Propose the size of additional quality assurance testing if the current test results cannot guarantee the risk allowed by the agency.
  3. Establish a boundary condition for acceptance on sample mean and standard deviation against sample size.

SPR-3854: Truck Report Tool

Principal Investigators - Bob McCullouch
Start Date - 11/01/2013

This project allows the continuation of the on-line truck reporting tool used by winter operations.

SPR-3833: Site Selection for New Lighting Technologies

Principal Investigators - Shuo Li, Yi Jiang
Start Date - 01/01/2014
Lighting is one of the proven safety countermeasures to reduce nighttime traffic crashes, particularly at intersections. This study will evaluate the effect of nighttime lighting on traffic safety, assess the in-service performance of new light sources, in particular LED and plasma lights, and develop a tool to assist INDOT Traffic Safety in comparing candidates and identify the most cost-effective solution to intersection lighting.

SPR-3832: Friction Surface Treatment Selection

Principal Investigators - Shuo Li, Yi Jiang
Start Date - 01/01/2014
Providing durable, friction surface treatment has been proven as an effective countermeasure to vehicle crashes on horizontal curves. The two types of friction surface treatment will be evaluated in the study, including high friction surface treatment (HFST) and pavement preservation treatment. This study aims to evaluate the in-service performance of HFST and conventional preservation treatments, provide first-hand data on the cost-effectiveness of the selected surface friction treatments, and establish general guides for the agency to apply surface friction treatments.

SPR-3831: Safety Acquisition and Management (Data Portal and TScan)

Principal Investigators - Andrew Tarko
Start Date - 08/15/2013
This project will identify available data sources, data quality parameters, and develop design specifications for a data portal to support the needs of identified data users in INDOT and among INDOT partners. An application software for a prototype system called Tscan for intersection data collection will be developed. The application will provide methods for quick safety evaluation for understanding high crash risk factors and more accurate identification and confirmation of roads with safety needs and for generating a Traffic Conflict Diagram to supplement the Collision Diagram or substitute for it if crash data are not available.

SPR-3830: Evaluation of Alternative Intersections and Interchanges

Principal Investigators - Andrew Tarko, Darcy Bullock
Start Date - 08/15/2013
This study will evaluate the traffic and safety performance of high-speed roads with a considerable presence of heavy vehicles. Expected deliverables include revised design guidelines for high-speed roundabouts, and design guidelines and determined performance measures for DDIs (diverging diamond intersections).

SPR-3823: INDOT-JTRP LPA Process Improvement

Principal Investigator - L. David Snow, James Handy
Start Date - 04/01/2014

The intent of INDOT’s Local Public Agency (LPA) program is to empower LPA’s to take on responsibility for managing their own Federal?Aid projects, providing them with the necessary resources and the appropriate amount of oversight to ensure that all Federal laws and regulations are met and that the project is successfully executed. This project will review the program’s existing training, standards, process, and other practices in order to identify efficiencies and improve overall project delivery.

SPR-3821: Real Time Traffic Mobility Measures

Principal Investigator - Darcy Bullock
Start Date - 04/01/2014
This project integrates real-time data into the Traffic Management Center operations and develops a series of real-time dashboards that can be utilized by technicians, engineers, planners, and developers to manage real-time traffic. The dashboards consist of a work zone assessment dashboard, an incident detection dashboard, and an interstate mobility dashboard.  In addition to real-time dashboards, the data will continue to be used to produce subsequent versions of the Indiana Mobility Report series to assist in the prioritization of capital and operations investments.

SPR-3820: Probability of Detection (POD) Study for Bridge Inspection Related to Steel Bridges

Principal Investigator - Robert Connor
Start Date - 8/1/2013
The probability of bridge inspectors to detect and quantify various defects and forms of damage, such as weld toe cracks, surface corrosion, and internal weld flaws, will be evaluated in this study. The influence of environmental conditions on detectability will also be studied, such as the influence of conducting inspection during nighttime, cold weather, etc. The outcomes will be used to develop procedures to improve inspection reliability, develop inspector performance-based certification criteria and procedures, and develop pin inspection and testing procedures.

SPR-3819: Element Level Bridge Inspection - Benefits and Use of Data for Bridge Management

Principal Investigator - Robert Connor
Start Date - 01/01/2014
The goal of this study is to identify the best and most effective ways to collect element level data in a format and with specific procedures that will ensure quality data are obtained and subsequently used most effectively. Element level data are required to be collected to implement element level bridge inspection procedures by October 1, 2014 per the MAP 21.

SPR-3818: Cost Benefit Analysis and Implementation of NDT Testing of INDOT Bridge Decks

Principal Investigator - Mark Bowman, Samuel Labi
Start Date - 1/1/2014
This study will review the effectiveness and resulting possible financial impact of various non-destructive tests for extending the useful service life of the bridge deck and overlay system.  Critical issues to be addressed include: the effectiveness of the non-destructive tests in evaluating the deck/overlay condition; the financial impact and savings realized by extending the useful service life of the deck/overlay system; and an evaluation of the cost versus the benefit of extending the inspection program if it proves to be a viable method of assessing bridge deck condition.

SPR-3816: Bridge Load Rating

Principal Investigator - Mark Bowman
Start Date - 1/1/2014
Based upon the review and assessment, a load rating procedure will be proposed for bridges that do not have plans. Three bridges in the INDOT state system will be selected for more extensive evaluation. This will include a detailed structural analysis and a load test to assess the condition of the bridge structure. Bridge structures of interest are earth-filled concrete arch bridges and buried concrete box and corrugated steel arch bridges.

SPR-3815: Establishing Modeling Standards for Bridges and Culverts

Principal Investigator - Venkatesh Merwade
Start Date - 1/1/2014
The main objective of this project is to develop an objective way of selecting a bridge or culvert for a given waterway crossing project. This objective will be accomplished through a combination of data analysis, computational modeling and laboratory studies. The project deliverables include a literature review of culvert and bridge design as documented in FHWA design manuals and HEC-RAS and a report detailing the scope of the study, methodology and the findings to help agencies objectively select bridge or culvert design for a given project.

SPR-3813: Performance of Warranted Asphalt Pavements: Smoothness and Performance of Indiana Warranted Asphalt

Principal Investigator - John Haddock, Rebecca McDaniel
Start Date - 1/1/2014
The goal of the project is review the use of asphalt pavement warranties.  Two deliverables are expected from the project: 1) a report quantifying the performance of asphalt pavements built using the warranty specification in comparison to conventional asphalt pavements and recommending whether INDOT should reinstitute the use of warranties; and 2) an updated asphalt warranty special provision.

SPR-3811: Moisture-Strength-Constructability Guidelines for Subgrade Foundation Soils Found in Indiana

Principal Investigators - Monica Prezzi, Rodrigo Salgado
Start Date - 09/01/2014

The goal of this project is to develop a methodology that will allow INDOT to consider the impact of moisture on soil strength and constructability characteristics during the design phase of projects. An approach to geotechnical projects that accounts for changes in soil properties over time will allow INDOT to address potential problems that may arise in projects and propose mitigating solutions upfront with the objective of reducing soil moisture-related change orders.

SPR-3810: Analysis of the MSCR Asphalt Binder Test and Specifications for Use in Indiana

Principal Investigators - Rebecca McDaniel, Ayesha Shah, Jan Olek
Start Date - 08/15/2013
This study will consider possible benefits of implementing the MSCR test by comparing the performance of binders formulated to meet the existing M 320 specifications to those formulated to meet MP 19. Reduced cost, longer pavement service life and improved performance are potential benefits of implementation of the new standards.

SPR-3808: Synthesis: Accelerating the Implementation of Research Findings to Reduce the Potential Concrete Pavement Joint Detection

Principal Investigators - Jan Olek, Jason Weiss
Start Date - 01/01/2014
This project will comprehensively review and synthesize all the suggested causes and phenomena associated with joint deterioration for purposes of developing a manageable solution to prevent and/or to mitigate this problem in the future.

SPR-3807: Investigating the Need for HMA Drainage Layers

Principal Investigators - John Haddock, Pablo Zavattieri
Start Date - 04/01/2014

The objective of this project is to determine if flexible pavements without HMA drainage layers can perform as well, or better as flexible pavements containing them.  Project deliverables include: updated hydraulic properties of current INDOT HMA materials; model of moisture migration in flexible pavements; results indicating if newer specifications better inhibit moisture migration; and a plan for long?term monitoring of the instrumented pavement sites.

SPR-3806: Verification of the Enhanced Integrated Climatic Module Soil Upgrade Input Parameters in MEPDG

Principal Investigators - Tommy Nantung (INDOT), Antonio Bobet, Marika Santagata
Start Date - 01/01/2014

The MEPDG method, currently used in Indiana to design all pavements, does not allow local calibration of the soil stiffness in terms of resilience modulus. The project will provide guidance to pavement design engineers for selecting re-verified soil input parameters and coefficients in the EICM module of the MEPDG.

SPR-3805: Long Term Performance Pavement Indicators For Failed Materials

Principal InvestigatorsHubo Cai
Start Date - 1/1/2014
This project analyzes the performance difference between “as?designed” and “as?constructed” pavement via performance?related specification (PRS) analysis; and estimates their life cycle cost difference to assess the risk of failed pavement materials. Main deliverables include a procedure to analyze the life cycle performance and cost of “as?designed” and “as?constructed” pavement containing failed materials; and a guideline on making informed decisions for failed pavement materials based on their long term performance.

SPR-3804: Intelligent Compaction of Asphalt Pavement Implementation

Principal Investigators - Makarand Hastak
Start Date - 10/1/2013
This study will explore the effectiveness of Asphalt Mix QC and/or QA by using IC Rollers and available Data output (Coverage and/or Stiffness and/or Temperature) in combination with, or as a replacement for, in-place density. The specific deliverables from this research include review of applications of IC technology by other DOTs through surveys and interviews, data analysis of IC data from demonstration site in 2009, application of IC- stiffness as the property of the QA, and the improvement of accuracy level of asphalt mix acceptance by using IC stiffness and in-place density.

SPR-3802: Development of Standardized Component Based Equipment Specifications and Transition Plan Into a Predictive Maintenance Strategy

Principal Investigators - John Haddock
Start Date - 12/1/2013
This project will deliver a a component performance based specification for single and tandem axle, medium-duty truck chasses with mounted winter maintenance equipment. This formula will also serve as a boilerplate for future specification development for additional on- and off-road equipment and allow the INDOT to transition to predictive maintenance practices.

SPR-3801: Using Field Electrical Conductivity Measurements for Scheduling Chip Seal Spreading/Sweeping Operation

Principal Investigators - John Haddock, Jason Weiss
Start Date - 08/15/2013
This project will deliver a handheld field device that can be used to determine when seal coats have sufficiently cured to allow brooming operations, traffic continuation, or both. By use of such a device, traffic could be released onto seal projects at the most opportune time, thus allowing the new seal to cure and perform properly. The seal coat process would be improved with greater reliability of a success.

SPR-3800: Development of a Geographic Winter-Weather Severity Index for the Assessment of Maintenance Performance

Principal Investigators - Michael Baldwin
Start Date - 01/11/2014
Effective and efficient removal of snow and ice from public roadways is a key outcome for winter maintenance. This project will develop a weather severity index that connects relevant weather?related variables to traffic?related variables. This will require classification of weather by type of event, such as wet snow, snow squalls, lake effect, freezing rain, frost. Geographic data sets of winter weather severity will be produced using detailed meteorological observations. A database will be delivered that contains the severity index, weather?related variables, and numerical predictions of the severity index statewide, on an hourly basis.

SPR-3757: Impact of HB-1481 on Indiana's Highway Revenue Generation, Asset Degradation, Modal Distribution, and Economic Development and Competitiveness

Principal Investigators - Samuel Labi, Kumares Sinha
Start Date - 6/15/2013
The research project will help INDOT monitor the impacts of the use of its highways by overweight vehicles, assess the impacts of Indiana House Bill 1481 on the permitting revenues, and ultimately, help preserve the state's investments in highway infrastructure without sacrificing the competitive economic development position of the state.

SPR-3753: Seal Coat Productivity

Principal Investigators - L. David Snow, James Handy
Start Date - 7/1/2013
The goal of this project is to increase the efficiency of the chip and fog seal operation. The researchers will use onsite observation and discussion with INDOT employees directly involved in the process to develop recommendations for improved processes and standard operating procedures and methodologies for the Seal Coat process.

SPR-3752: Documentation of the Construction of INDOT's Experience with the Bridge Decks Containing Internal Curing in 2013

Principal Investigator - Jason Weiss
Start Date - 4/1/2013
This project outlines work to document the construction of four internally cured bridge decks during the summer of 2013. The project will include documentation, measurement of fresh concrete properties, collection of samples for long-term testing including diffusion samples as well as one series of frames to measure cracking.

SPR-3751: Evaluation of the Microstructural Characteristics of Soil Treated with Cement Kiln Dust (CKD) and Used as a Subgrade at US24

Principal Investigators - Nancy Whiting
Start Date - 1/1/2013
In 2010 construction began on a new section of US 24 northwest of Fort Wayne, IN. Reportedly the subgrade was treated with 5% of a cement kiln dust (CKD) at the time of construction to help control problems related to excess moisture and facilitate construction in the silty-clay soils. In the Spring of 2011 heaving was noted in the soils and asphalt pavement in several places. INDOT has concerns that the FWD results suggested a potential problem with pavement support in several places along the PCCP section of US 24. This project will investigate to what degree, if any, the subgrade treatment may have contributed to the reduction in subgrade support seen in the FWD results.

SPR-3728: Sulfates in Indiana Substrates

Principal Investigators - Nelson Shaffer (Indiana Geological Survey)
Start Date - 1/1/2013
Sulfates in natural substrates can cause deterioration of Indiana's roads. Existing analytical methods to measure sulfate contents are variable in their approach and not specific to Indiana. There exists little quantification of amounts of sulfate occurring naturally in Indiana, identification of geographic areas having high sulfate content, or analysis of sulfate occurring in alternate road building materials such as byproducts from coal combustion. The study team will evaluate existing methods of quantifying sulfate; recommend Indiana specific test methods, and develop GIS maps and a database of potential problem areas.

SPR-3726: Upgrading RoadHAT - Collision Diagram Builder and HSM Elements

Principal Investigators - Andrew Tarko
Start Date - 12/1/2012
The improved RoadHAT, a tool for facilitating safety management process, will further streamline and speed up preparations of documentation to justify road safety investments. The recent development of Highway Safety Manual at the national level will be incorporated if found beneficial. These improvements will lead to a better selection of safety improvement projects and ultimately less frequent and less severe crashes on Indiana highways.

SPR-3725: Development of Guidelines for the Deployment of Flashing Yellow Arrow Traffic Signals in Indiana (FYA)

Principal Investigators - Robert Rescott
Start Date - 2/18/2013
It is estimated that roadway safety can be enhanced in Indiana through the addition of Flashing Yellow Arrows as an engineering option at traffic signals for protected/permitted turns. The addition of such a signal would serve to provide consistency between similar signal indications. The implementation of this technology may reduce crashes up to 30% at intersections. Statewide implementation of this may provide additional opportunities for INDOT to receive federal safety funds, resulting in a lifesaving and revenue positive change. Currently, Indiana does not have a comprehensive set of guidelines for statewide implementation practices; such will be remedied through this research.

SPR-3723: Selection of Pedestrian Crossing Treatments (mid-Block and Roundabouts, ADA)

Principal Investigators - Sauleiman Ashur (IPFW), Mohammad Alhassan (IPFW)
Start Date - 1/1/2013
The study will develop a synthesis report of studies and guidelines/manuals on pedestrian crossing treatments. The main goal is to help designers and traffic engineers use existing resources for the selection of pedestrian crossing treatments with focus on unsignalized intersections, midblock, roundabouts, and trails and bikeway crossings. The project deliverables include reports on the state-of-art selection practice, a synthesis report with guidelines on selecting pedestrian crossing treatments, and a professional development workshop for INDOT engineers to disseminate the findings of the project.

SPR-3722: Striping Truck Utilization at Crawfordsville and Greenfield

Principal Investigators - L. David Snow, James Handy
Start Date - 1/1/2013
This goal of this project is to reduce the number of Striping Trucks required from four trucks to two trucks for Crawfordsville and Greenfield districts. The resulting process will provide better utilization of the remaining trucks and reduce the cost of two trucks and any truck maintenance costs.

SPR-3717: Streambank Stabilization Alternatives to Riprap

Principal Investigator - Dennis Lyn
Start Date - 1/1/2013
This project will identify and characterize techniques that can be used to stabilize streambanks in an environmentally sensitive yet cost-effective manner. This project will review the relevant literature and assess the performance of approaches previously taken at various INDOT sites as the basis for providing guidance in the choice of the context-dependent best technique(s). Results will provide the basis for updating the relevant portions of the INDOT design manual and standard specifications.

SPR-3716: Relating Design Storm Events to Ordinary High Water Marks in Indiana

Principal Investigator - Venkatesh Merwade
Start Date - 1/1/2013
This project will involve comparing a representative number of channels across the state with known OHWMs to a variety of storms with high recurrence intervals to determine which flow rates correspond to the known elevations. The research will also involve compilation of rainfall and streamflow data for modeling and comparison of model outputs with observed high water marks. The project deliverables will be an objective way of specifying the OHWM for design of hydraulic structures.

SPR-3715: CAI/S-BRITE (Steel Bridge Research, Inspection, Training and Education Center): Preliminary Engineering Design

Principal Investigator - Robert Connor
Start Date - 10/1/2012
This proposal is for preliminary engineering design fees associated with the development of the property for the Center for Aging infrastructure S-BRITE Center.

SPR-3714: Guardrails for Use on Historic Bridges

Principal Investigator - Robert Frosch, Michael Kreger
Start Date - 1/1/2013
Federal and state laws protect historically significant bridges. However, the original railing is not likely to meet current AASHTO requirements. The objective of this study is to develop a toolbox of design/rehabilitation alternatives that may be used to address existing rails on historic bridges. This research will develop solutions to provide a safe and efficient railing for these historic bridges as well as alternative, economic solutions for the design of bridge deck overhang on both historic and new bridges.

SPR-3713: Review of Load Rating and Posting Procedures and Requirements

Principal Investigator - Mark Bowman
Start Date - 9/1/2012
This synthesis study will collect information on the load rating and posting practices used in other states and then compare those procedures to the posting practices used in Indiana. The deliverable will be a final report that summarizes load rating and posting practices, including recommendations that should be considered for possible adoption based on the results of the study.

SPR-3711: MEPD Implementation (Validation/Model Calibration/Acceptable Distress Target/IRI Failure Trigger/Thermal Selection/binder Selection) and Climatic Data Generation

Principal Investigator - Tommy Nantung (INDOT), Jusang Lee (INDOT), Bob McCullouch
Start Date - 7/1/2013
The goal of this project is refinement of the INDOT MEPDG design procedure to match Indiana's conditions and parameters more closely. The following objectives are established to meet this end goal:

  1. Review the performance criteria in MEPDG and establish new pavement design performance criteria.
  2. Verify and validate the performance models in MEPDG and eliminate remaining conservative pavement design criteria.
  3. Assure that the current INDOT policy regarding the Superpave asphalt pavement guidelines supersedes the asphalt pavement dynamic modulus in the MEPDG.
  4. Create a comprehensive Indiana climatic data file in XML format for input into MEPDG.

SPR-3710: Correlation between Resilience Modules (MR) of Soil, Light Weight Deflectometer, and Falling Weight Deflectometer (FWD)

Principal Investigator - Tommy Nantung (INDOT), Antonio Bobet
Start Date - 1/1/2013
The Mechanistic-Empirical Pavement Design Guide (MEPDG) requires pavement design input parameters that are accurate, representing actual conditions in the field. One such parameter is the soil resilient modulus. Equipment such as the Light Weight Deflectometer (LWD) and Falling Weight Deflectometer (FWD) is utilized to determine the in-situ resilient modulus for pavement design. A conversion factor is needed to convert the FWD and LWD values to the resilience modulus value for the MEPDG input. The objective of this proposal is to make the conversion factor of the FWD and LWD values to the resilience modulus more accurate.

SPR-3709: Intelligent Compaction - Soils, Data Interpretation and Risk/Reward Assessment

Principal Investigator - Phillip Dunston
Start Date - 10/1/2012
The main deliverables of this project will be recommendations and guidelines for the future use of intelligent compaction IC as a QC/QA tool for soil embankment construction. Analysis aims to establish a correlation between IC and DCP data, along with improved understanding of risks and rewards for both agency and the contractor and recommended procedures for implementation of an IC specification.

SPR-3708: Toward Performance Related Specifications for Concrete Pavements

Principal Investigator - Jason Weiss
Start Date - 1/1/2013
The current level of construction activity provides INDOT with the opportunity to collect information from concrete paving projects which can be used to generate information that may be used to improve the standards and specifications in the next generation of pavements. INDOT is poised to utilize data from pavement projects to develop new approaches for contracting and specification (PRS and PWL specifications). This information may be used to provide high quality contractors with rewards for providing this quality.

SPR-3707: A Synthesis Study on Collecting, Managing, and Sharing Road Construction Asset Data

Principal Investigator - Hubo Cai, Phillip Dunston
Start Date - 3/1/2013
The construction phase is the best time for collecting as-built data for roadside assets. Underground drainage and utilities are only accessible during construction. Collecting data for guardrails, crash cushions, signal and signage, and pavement after construction has not kept pace with technology. This project assesses INDOT's data needs and recommends best practices in collecting, managing, and sharing road construction asset data. Main deliveries include (1) a framework of data needs, data collection opportunities during construction, and data collection and management strategies; and (2) an implementation guideline that specifies the best timing, method, and responsible party for data collection.

SPR-3706: Laser Mobile Mapping Standards and Applications in Transportation

Principal Investigators - Steven Johnson, James Bethel
Start Date - 10/1/2012
This project will update the INDOT Survey Design Manual to incorporate standards for Lidar Mobile Mapping data acquisition. We will construct a test facility and evaluate commercial system accuracy. We will recommend workflows to obtain vector data from raw point clouds, and compare to conventional data collection approaches.

SPR-3704: Indiana State Highway Cost Allocation and Revenue Attribution Study/Estimation of Travel by Out-of-State Vehicles on Indiana Highways

Principal Investigator - Samuel Labi, Kumares Sinha
Start Date - 3/15/2013
The project will develop a methodology for allocating highway costs and attributing revenues to all vehicle classes. The results will provide a clear quantitative understanding of the extent of costs incurred by various vehicle classes and the revenues they contribute. This understanding will allow an assessment of the appropriateness of types and rates of current taxes and fees and to devise future rates and types to meet the financing needs of coming years. The research will also include a companion study on the estimation of the extent of travel of out-of-state vehicles on Indiana’s highways.

SPR-3702: Strategies for Grouping of Transportation Projects

Principal Investigator - Jon Fricker, Samuel Labi
Start Date - 2/15/2013
The project will assess the in-service safety performance of INDOT roadside barriers. The results will complement the existing barrier use criteria and selection methods in Indiana conditions. The results will specify conditions that justify consideration of road barriers, will propose revisions of guidelines for selecting the barrier type, and will provide crash cost modification factors to facilitate economic analyses.

SPR-3640: Create a Performance Index/Condition Assessment Measure

Principal Investigators - Andrew Tarko, Jie Shan
Start Date - 9/1/2011
The geometric component of project improvements is only approximately captured in the current INDOT asset management practice. A geometry sufficiency index is proposed to evaluate the geometric adequacy of the road cross-section based on documented safety and speed effects to provide a measure to describe benefit for large project costs. A second use of the index is for statewide analysis of needs and financial impacts by collecting or gathering information on the entire network and to evaluate current deficiencies or look for the most cost effective projects across the state uniformly.

SPR-3639: Engineering Properties of Marls

Principal Investigators - Marika Santagata, Antonio Bobet
Start Date - 8/1/2011
Marls and marly soils are commonly encountered throughout the State of Indiana. While such soils pose concerns related to settlement and stability of overlying fills/embankments, relatively little is known about their engineering properties. The project proposes to perform an in depth characterization of the geotechnical properties of marl that will provide a dataset of engineering properties that will aid in future design and construction on these soils. The investigation will involve field testing, soil sampling and laboratory tests to quantify deformation and strength properties. Guidelines will be developed for sampling and testing of these soils. The investigation will be the first of its kind.

SPR-3636: LRFD of Bridge Foundation Accounting for Pile Group-Soil Interaction

Principal Investigators - Rodrigo Salgado, Monica Prezzi
Start Date - 8/15/2011
INDOT needs economical, reliable pile LRFD methods. However, no research has been done on LRFD of pile groups. This project aims to enable INDOT to take advantage of the FHWA LRFD mandate by transitioning to designs based on state-of-the-art technology and methods of design and to develop the corresponding resistance factors needed for LRFD design of pile groups.

SPR-3635: QA/QC of Subgrade and Embankment Construction-Technology Replacement and Updated Procedures

Principal Investigators - Monica Prezzi, Rodrigo Salgado
Start Date - 7/1/2011
Compaction control has been typically performed by INDOT using the nuclear gauge test, however nuclear gauge use will be discontinued in September, 2012. The dynamic cone penetration test (DCPT) will be used instead. The project aims to establish a reliable correlation between DCPT blow count and soil density.

SPR-3634: Evaluation of Member Level Redundancy in Built-Up Steel Members

Principal Investigator - Robert Connor
Start Date - 9/1/2011
The goal of the research is to develop methodologies that will allow a more rational assessment of the risk associated with fatigue and fracture of built-up structures and a much better use of limited inspection efforts while actually increasing safety.

SPR-3626: Enhanced Treatment Selection for Reflective Joint Cracking in Composite Pavement

Principal Investigators - Makarand Hastak
Start Date - 1/1/2012
Through this research, INDOT will be able to 1) enhance identification of the condition of the underlying concrete joints by looking at the surface distresses of the asphalt overlay and 2) develop a decision making process to enhance treatment selection for reflective joint cracking in composite pavements.

SPR-3624: Optimizing Laboratory Mixture Design as it Relates to Field Compaction in order to Improve Hot-Mix Asphalt Durability

Principal Investigators - John Haddock, Rebecca McDaniel
Start Date - 7/1/2011
The objective of the research is to optimize HMA laboratory mixture design compaction as it relates to field compaction in order to increase in-place HMA pavement durability without sacrificing permanent deformation characteristics of the mixtures. The deliverables from the project are expected to be a revised HMA mixture design procedure and a suggested field study program to verify the new design procedure.

SPR-3623: Early Detection of Joint Distress in Portland Cement Concrete Pavements

Principal Investigator - Jason Weiss
Start Date - 8/1/2011
Portland Cement Concrete Pavements (PCCP) have shown the potential to deteriorate at joints. While ongoing research is being conducted to determine the mechanisms that contribute to this deterioration, it has been identified (SPR 3200) that water/fluid saturation is a primary cause. It has been shown (ISB, SPR 3523) that specific sealers can slow the penetration of fluids and extend the life of the concrete pavement. Currently however the damage becomes visible at a point that is too late to enable the use of potential repairs. This research investigates the use of methods to determine which joints may be susceptible to damage. In doing so it is believed that corrective actions can be taken to cost-effectively extend the life of the pavement.

SPR-3619: Extending the Life of Paint and Reflective Pavement Markers by Utilizing Partial Rubber Plow Blades

Principal Investigator - Dwayne Harris
Start Date - 12/1/2011
INDOT maintenance would like to evaluate the effectiveness of a partial rubber snow plow blades. Partial rubber snow plow blades are currently available as an alternative to full metal blades. The hypotheses of this study is that the partial rubber blade will cause less damage to the pavement markings and the raised pavement markers, but provide somewhat less effective snow removal than the steel carbide blade. The purpose of this study is to conduct a limited study to evaluate the decrease in damage and snow removal performance of the partial rubber plow blade verses the traditional steel carbide blade.

SPR-3617: Bridge Preservation Treatments and Best Practices

Principal Investigator - Mark Bowman
Start Date - 1/1/2012
Cost-effective bridge maintenance practices need to be formulated and implemented to prolong the useful service life of Indiana bridges. This project will examine bridge maintenance operations being conducted in other states, as well as the maintenance being done within the various INDOT Districts. A list of the most promising maintenance activities will then be developed and a thorough assessment of the activities will be performed. The deliverable product is a list of effective maintenance operations and recommendations of when they need to occur. Recommendations for training will also be provided.

SPR-3616: A Systematic Approach of Identifying Safety Intervention Programs for Indiana

Principal Investigator - Andrew Tarko
Start Date - 9/1/2011
This project will develop a comprehensive method of identifying relevant and effective safety interventions to address needs identified with the INDOT road network screening tool developed in the Phase 1. The tool will enhance INDOT's ability to develop the most cost-effective solutions for safety problems, thus increasing efficiency of investments of the traffic safety programs. This is expected to reduce considerably the recurring effort in terms of staff-hours needed to assess system performance, identify poorly operating candidate project sites, and develop and evaluate countermeasures' cost-effectiveness.

SPR-3615: Active Corridor Management

Principal Investigator - Darcy Bullock
Start Date - 1/1/2012
This research project will continue the collaborative partnership developed between the INDOT Traffic Management Team, Traffic Signal Vendors, and Purdue University to deploy a distributed management system for INDOT traffic signal infrastructure. The resulting system will result in improved traffic signal system performance to Indiana motorists. In the near term, this project will improve INDOT system performance and substantially advance the state of the practice.

SPR-3611: Performance of More Sustainable Cements that Include Interground Limestone Additions of up to 15%*

Principal Investigator - Jason Weiss
Start Date - 5/1/2011
Due to concerns regarding CO2 emission and quarry depletion, discussions exist toward investigating the specification of new cements that contain up to 15% interground limestone. INDOT currently does not have information that could enable specifications to be revised or developed for this material. Further INDOT does not have information regarding the performance of these materials under their conditions. This study will provide this information for use in specification modification/development.

*Project completed and accepted by INDOT on 1/8/2014. Online final report pending.

SPR-3605: Updating Procedures for Traffic Impact Analysis

Principal Investigator - Jon Fricker
Start Date - 8/1/2011
HPR-2039 produced Traffic Impact Analysis guides for use by applicants (consultants) and reviewers (INDOT). This study will update the guides to account for changes over the last 20 years, including land use patterns, roadway configurations, traffic impact analysis methods and software, multiple jurisdictions, and requests for access onto limited access highways. A Traffic Impact Analysis process that is clear and flexible will permit development that serves the public with a high degree of safety and efficiency.

Project completed and accepted by INDOT on 1/10/2014. Online final report pending.

SPR-3600: Identifying Strategies to Improve Road Use Management in Indiana

Principal Investigators - Srinivas Peeta, Kumares Sinha
Start Date - 8/1/2011
This study will identify road use management strategies that can represent cost-effective options to complement capacity addition to address congestion in Indiana. It will characterize various road use management strategies based on their operational aspects and feasibility requirements. Simulation based analysis will be used to provide guidelines for the use of different strategies based on the characteristics of the relevant corridor. Potential sites in Indiana where these strategies can be implemented in a 5-10 year framework will be identified.

SPR-3533: Performance Evaluation of Crack Sealing and Filling Materials with Pavement Preservation Treatments

Principal Investigators - Ju Sang Lee (INDOT), Makarand Hastak
Start Date - 1/1/2011
Revised (draft) specification and updated SPR-3114: Treatment Guidelines for Pavement Preservation

SPR-3531: Traffic Operation Mobility Measures

Principal Investigator - Darcy Bullock
Start Date - 9/1/2011
Travel times are highly variable due to rapidly changing conditions along a segment or corridor. Conditions frequently change due to seasonal fluctuations in demand, road construction, incidents, special events, weather, and active speed enforcement activity. With the emerging probe data sources, it is now possible to develop multi-scale reports that characterize over mobility over varying highway segment lengths and time periods to characterize system mobility. The outcome of this project will be mobility reports that can be used for both internal assessments as well as communication system performance to the public.

SPR-3530: Best Practices for Roundabouts on State Highways*

Principal Investigator - Darcy Bullock
Start Date - 1/1/2011
Roundabouts decrease crash severity, and under low to moderate volumes often have lower control delay then signalized intersections. The purpose of this research project is to develop decision criteria for identifying when roundabouts are the most appropriate control mechanism. This involves synthesizing best practices from the other agencies, as well as quantitative evaluation of the effectiveness of current roundabout models used for design and analysis.

*Project completed and accepted by INDOT on 7/12/2013. Online final report pending.

SPR-3528: Alternatives to Raised Pavement Markers (RPM's)*

Principal Investigator - Darcy Bullock
Start Date - 1/1/2011
It is desirable to identify techniques that can be used to either eliminate or significantly reduce the use of RPMs, and still provide a similar (or better) safety performance at the same or lower life cycle cost. This project proposes to develop a pilot site deployment collaboration between INDOT and Purdue to evaluate and compare RPM painted rumble strips. The assessment will consider retroreflectivity, technical performance, safety benefit and economic life-cycle.

*Effective February 6, 2014, this project has been completed and a final report is in production.

SPR-3523: Evaluation of Sealers and Waterproofers for Extending the Life Cycle of Concrete

Principal Investigators - Jason Weiss, Bernard Tao
Start Date - 9/1/2010
This research will examine the use of sealers and waterproofers for concrete paving materials specifically with the intention of improving joint behavior. The goal of this work is to provide an economic method to extend the life of concrete pavements and concrete curbs and gutters.

SPR-3512: Performance Evaluation of Deployed Cathodic Protection

Principal Investigators - Victor Hong (INDOT), Bob McCullouch
Start Date - 2/1/2011
INDOT installed 15 CP systems in bridge decks about 20 years ago. The performance of corrosion protection of these systems has not been evaluated. This research project will evaluate the current condition and performance of the CP system.

SPR-3510: Subbase Requirements for Utilizing Unsealed Joints in PCCP

Principal Investigator - Yigong Ji (INDOT)
Start Date - 1/1/2011
The study will determine, through a literature search, the practices of other states utilizing unsealed joints, the economics of an INDOT unsealed joint section, and the projected performance of an unsealed PCCP utilizing the MEPDG, FWD testing and IRI testing. The unsealed PCP would then be compared to the sealed joints INDOT uses presently.

SPR-3507: Project Evaluation Methods for Pavement Preservation Treatments

Principal Investigators - Jusang Lee (INDOT), Makarand Hastak
Start Date - 1/1/2011
Checklist for identifying/evaluating segregation, high air voids, and water stripping in HMA pavements.

SPR-3506: Concrete Pavement Joint Deterioration

Principal Investigator - Nancy Whiting
Start Date - 1/1/2011
Failure of concrete at the joints of some INDOT pavements leads to costly repairs and failure to meet design life. This project is intended to identify the combinations of design, construction practices, materials and/or environmental factors that lead to distress and premature failure.

SPR-3504: Socio-Economic Forecasting

Principal Investigators - Jon Fricker, Kevin McNamara
Start Date - 1/1/2011
This project will review the socio-economic forecasting process and make recommendations for the future development of forecasts and the use of the REMI model.

SPR-3503: Measurement and Monitoring of the Performance of Highway Investment*

Principal Investigators - Jon Fricker, Kumares Sinha
Start Date - 3/1/2011
This project establishes a systematic, comprehensive, and robust tool for INDOT to use to measure and monitor the rate of return and benefits of highway investments. The scope of work to be completed includes: (a) identification of methods of post-implementation program evaluation, (b) development of a tool including Excel software to measure the real-time performance of highway investments, and (c) manuals outlining both the calibration of the analytical tool and the proposed implementation plans. This will enable INDOT to evaluate highway investments made on the system and to make informed decisions regarding future investments.

*Project completed and accepted by INDOT on 8/1/2013. Online final report pending.

SPR-3501: Employing Asset Management to Control Costs and Sustain Highway Levels of Service*

Principal Investigators - Jon Fricker, Kumares Sinha
Start Date - 10/1/2010
This research project establishes a set of criteria associated with performance values for four different highway asset types in Indiana: pavement condition, bridge condition, added capacity (mobility), and safety. System performance curves can be built from data on INDOT assets that show the level of system performance that could be expected for any budget level in any given year. This project will provide a tool for improved allocation of resources within a system and among difference subsystems from both engineering and financial perspectives. The tool can be used at the statewide network level, at the district level, or at a highway system level.

*Project completed and accepted by INDOT on 3/18/2014. Online final report pending.