Project Number Project Title Stage Comments
NCHRP 24-03Laboratory Evaluation of Piles Installed with Vibratory DriversCompleted
NCHRP 24-04Load Factor Design Criteria for Highway Structure FoundationsCompleted
NCHRP 24-05Downdrag on Bitumen-Coated PilesCompleted
NCHRP 24-06Expert System for Stream Stability and Scour EvaluationCompletedNCHRP Report 426 CAESAR: An Expert System for Evaluation of Scour and Stream Stability
NCHRP 24-07Countermeasures to Protect Bridge Piers from ScourCompleted
NCHRP 24-07(2)Countermeasures to Protect Bridge Piers from ScourCompletedNCHRP Report 593 Countermeasures to Protect Bridge Piers from Scour
NCHRP 24-08Scour at Bridge Foundations: Research NeedsCompleted
NCHRP 24-09Static and Dynamic Lateral Loading of Pile GroupsCompleted
NCHRP 24-10Thermally Sprayed Metallic Coatings to Protect Steel PilingsCompleted
NCHRP 24-11Guidelines for Geofoam Applications in Embankment ProjectsCompletedNCHRP Report 529 Guideline and Recommended Standard for Geofoam Applications in Highway Embankments and Web-Only Document 65 Geofoam Applications in the Design and Construction of Highway Embankments
NCHRP 24-11(02)Guidelines for Geofoam Applications in Slope Stability ProjectsCompletedResearch Results Digest. 380: Guidelines for Geofoam Applications in Slope Stability Projects
NCHRP 24-12Controlled Low-Strength Material For Backfill, Utility Bedding, Void Fill, and Bridge ApproachesCompleted
NCHRP 24-12(01)Controlled Low-Strength Material For Backfill, Utility Bedding, Void Fill, and Bridge ApproachesCompleted
NCHRP 24-13Evaluation of Metal Tensioned Systems in Geotechnical ApplicationsCompleted
NCHRP 24-14Scour at Contracted Bridge SitesCompletedNCHRP Web-Only Document 83 Scour at Contracted Bridges
NCHRP 24-15Complex Pier Scour and Contraction Scour in Cohesive SoilsCompletedNCHRP Report 516 Pier and Contraction Scour in Cohesive Soils
NCHRP 24-15(2)Abutment Scour in Cohesive MaterialsCompletedAn unedited, completed final report for this project has been posted on the web with a link to it in the “Product Availability” section of this page. For more information see the “Status” section of this page.
NCHRP 24-16Methodology for Predicting Channel Migration CompletedNCHRP Report 533 Handbook for Predicting Stream Meander Migration.
NCHRP 24-17LRFD Deep Foundation DesignCompleted
NCHRP 24-18Countermeasures to Protect Bridge Abutments from ScourCompletedTerminated due to PI relocation.
NCHRP 24-18ACountermeasures to Protect Bridge Abutments from ScourCompletedNCHRP Report 587 Countermeasures to Protect Bridge Abutments from Scour.
NCHRP 24-19Environmentally Sensitive Channel- and Bank-Protection MeasuresCompletedNCHRP Report 544 Environmentally Sensitive Channel- and Bank-Protection Measures
NCHRP 24-20Prediction of Scour at Bridge AbutmentsCompletedAn unedited, completed final report for this project has been posted on the web with a link to it in the “Product Availability” section of this page. For more information see the “Status” section of this page.
NCHRP 24-20(02)Evaluation of Abutment-Scour Equations from NCHRP Projects 24-15(2) and 24-20 Using Field DataCompletedCompleted. An uncorrected draft, as submitted by the Contractor, is posted on line with a link in the Product Availability section at the bottom of this page.
NCHRP 24-21LRFD Soil-Nailing Design and Construction SpecificationsCompletedNCHRP Report 701: Proposed LRFD Specifications for Soil Nailing Design and Construction.
NCHRP 24-22Selecting Backfill Materials for MSE Retaining WallsCompletedCompleted. An uncorrected draft, as submitted by the Contractor, will be posted on line with a link in the product availability section at the bottom of this page.
NCHRP 24-23Riprap Design Criteria, Specifications, and Quality ControlCompletedNCHRP Report 568 Riprap Design Criteria, Recommended Specifications, and Quality Control.
NCHRP 24-24Criteria for Selecting Numeric Hydraulic Modeling SoftwareCompletedNCHRP Web-Only Document 106 Criteria for Selecting Hydraulic Models
NCHRP 24-25Guidelines for Risk-Based Management of Bridges with Unknown FoundationsCompletedNCHRP Web-Only Document 107 Risk-Based Management Guidelines for Scour at Bridges with Unknown Foundations
NCHRP 24-26Effects of Debris on Bridge-Pier ScourCompletedNCHRP Report 653: Effects of Debris on Bridge Pier Scour
NCHRP 24-27(01)Evaluation of Bridge Scour Research: Pier Scour Processes and PredictionsCompletedThe project final report is available as NCHRP Web-Only Document 175.
NCHRP 24-27(02)Evaluation of Bridge-Scour Research: Abutment and Contraction Scour Processes and Predictions CompletedThe project final report is available as NCHRP Web-Only Document 181.
NCHRP 24-27(03)Evaluation of Bridge-Scour Research: Geomorphic Processes and PredictionsCompletedThe project final report is available as NCHRP Web-Only Document 177.
NCHRP 24-28LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems in Geotechnical ApplicationsCompletedThe project final report is available as NCHRP Report 675.
NCHRP 24-29Scour at Bridge Foundations on RockCompletedNCHRP Report 717: Scour at Bridge Foundations on Rock
NCHRP 24-30Design Guidelines for Increasing the Lateral Resistance of Highway Bridge Pile Foundations by Improving Weak SoilsFinal
NCHRP 24-31LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures Final
NCHRP 24-32Scour at Wide Piers and Long Skewed PiersCompleted
NCHRP 24-33Development of Design Methods for In-Stream Flow Control StructuresFinalCompleted. Published as NCHRP Report 795.
NCHRP 24-34Risk-Based Approach for Bridge Scour PredictionFinal
NCHRP 24-35Guidelines for Certification and Management of Flexible Rockfall Protection SystemsCompletedCompleted. Published as NCHRP Report 823
NCHRP 24-36Scour at the Base of Retaining Walls and Other Longitudinal StructuresFinal
NCHRP 24-37Combining Individual Scour Components to Determine Total ScourFinalFinal Research Report is available online as NCHRP Web-Only Document 249
NCHRP 24-38Development of Bridge Foundation Movement Criteria-- Phase I FinalNCHRP terminated the awarded contract; The remaining work is completed under NCHRP Project 12-103
NCHRP 24-39Evaluation and Assessment of Environmentally Sensitive Stream Bank Protection MeasuresCompletedCompleted. Published as NCHRP Report 822.
NCHRP 24-40Design Hydrology for Stream Restoration and Channel Stability at Stream CrossingsFinal
NCHRP 24-41Defining the Boundary Conditions for Composite Behavior of Geosynthetic Reinforced Soil (GRS) StructuresFinal
NCHRP 24-42Underwater Installation of Filters Systems for Scour and Other Erosion Control CountermeasuresFinalThe final report will be published in August 2018
NCHRP 24-43Relationship Between Erodibility and Properties of SoilsFinalComplete
NCHRP 24-44Guidelines for Managing Geotechnical Risks in Design-Build ProjectsFinal
NCHRP 24-45Evaluating Mechanical Properties of Earth Material During Intelligent CompactionActiveResearch in progress
NCHRP 24-46Development of an Implementation Manual for Geotechnical Asset Management for Transportation AgenciesFinal
NCHRP 24-47Revised Clear-Water and Live-Bed Contraction Scour AnalysisActiveThe interim report has been received and reviewed by the panel. The draft final deliverables are expected in April 2019.
NCHRP 24-48Develop a Formula for Determining Scour Depth around Structures in Gravel-bed RiversActiveResearch underway.
NCHRP 24-49Guidelines for Selection and Application of Manning’s Roughness Values in Two-Dimensional Hydraulic ModelsRFP