| 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 55-02 | Practices for Collecting, Managing, and Using Light Detection and Ranging (LiDAR) Data | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-03 | Asset Management Practices for Mechanically Stabilized Earth Walls | 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 55-07 | Stormwater Retrofit Programs and Practices Through Third-Party Partnerships | 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 55-09 | Open-books Pricing Practices for Construction Manager/General Contractor and Progressive Design-Build Projects | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-10 | Implementation of the Federal Highway Administration (FHWA) Proven Safety Countermeasures | 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 55-13 | Practices for Operational Traffic Simulation Models | 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 55-15 | Tracking Safety Leading Indicators to Improve DOT Employee Safety Performance | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-16 | Use of Sustainable Materials for Erosion and Sediment Control Practices | 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 55-20 | Traffic Capacity Level of Service Adaptations and Usage | Active (Synthesis) | |
| NCHRP Synthesis 20-05/Topic 55-21 | Funding for Maintenance of Complete Streets | Active (Synthesis) | |
| 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) | Research in progress |
| NCHRP Synthesis 20-05/Topic 56-11 | Practices for Transportation Planning in Non-Metropolitan Areas | Active (Synthesis) | |