| NCHRP Synthesis 20-05/Topic 54-11 | Quality Control Checks for Bridge and Structure Analysis Models | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 54-13 | Truck Emergency Escape Ramp Design and Operation | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-01 | State DOT Policies and Practices on the Use of Corrosion Resistant Reinforcing Bars | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-04A | Current Practices and Guidelines for Full-Depth Reclamation (FDR) | Active (Synthesis) | This project replaces NCHRP Project 20-05/Topic 55-04, in order to accomodate a change in contract vehicles. |
| NCHRP Synthesis 20-05/Topic 55-05 | Use of Supplementary Cementitious Materials for Concrete | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-06 | State DOT Certification Programs for Materials Sampling and Testing Personnel | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-08 | Construction Strategies and Techniques for Planned Bridge Replacements in Complex Scenarios | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-11 | Construction Stormwater Program Management, Tracking, Reporting, and Compliance | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-12 | Bridge Construction Inspection Training Resources and Practices | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-14 | Maintenance Practices for Wide Cracks and Joints in Flexible and Composite Pavements | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-17 | Practices to Enhance Resiliency of Existing Roadway and Embankment Culverts | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-18 | Permitting, Design, and Construction Practices for Aquatic Organism Passage | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-19 | Documenting the State of Practice in Managing Ancillary Transportation Assets | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-01 | Occupational Safety Training and Knowledge Transfer Practices for State DOT Employees | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-02 | Design, Production, and Placement of High RAP Asphalt Mixtures | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-03 | Current Practices in Pedestrian Safety Enhancements by State DOTs | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-04 | Practices on Mental Health, Suicide Prevention, and Addiction Mitigation in Construction and Maintenance | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-05 | Traffic Analysis Practices for Non-Motorized Modes (Vulnerable Road Users) | Active (Synthesis) | Project is on hold |
| NCHRP Synthesis 20-05/Topic 56-06 | Practices for Transitioning to Digital Delivery Systems and Workflows | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-07 | Practices for Identifying and Incorporating Risk into Bridge Asset Management Planning | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-08 | Using Cathodic Protection to Mitigate Corrosion of Highway Structures | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-09 | Staffing Models for Transportation Systems Management and Operations (TSMO) | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-10 | Practices to Reduce Serious Injuries and Fatalities (SIFs) for State DOT Employees | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-11 | Practices for Transportation Planning in Non-Metropolitan Areas | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-12 | Practices on Management, Operation, and Maintenance of Automated Traffic Signal Performances Measures | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-13 | DOT Budgetary Practices for Municipal Separate Storm Sewer System (MS4) Permit Programs | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-14 | State DOT Training Programs to Comply with NPDES Stormwater Permit Requirements | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-15 | Practices for Selecting, Installing, Maintaining, Replacing, and Successively Using Complementary Bridge Deck Protection Systems | Active (Synthesis) | In contracting |
| NCHRP Synthesis 20-05/Topic 56-16 | Data Collection and Management to Expedite Pothole Repairs | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-17 | Friction Management Program Practices to meet Safety and Pavement Performance | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-18 | Policies, Programs, and Practices for Personal Protective Equipment (PPE) | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-19 | Practices on Coordination of HSIP and Highway Safety Office Activities | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-20 | Pavement Design and Evaluation of Low Volume Roads with Heavy Loads | Active (Synthesis) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-21 | Practices Related to Construction Contingency | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 56-22 | Practices for Recruiting and Retaining Engineers, Project Managers, and Key Leadership Positions | Active (Synthesis) | |