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Safety and NEPA Case Studies and Noteworthy Practices: Colorado's I-25 South Gap

Author: Federal Highway Administration

The Colorado I-25 South Gap Case Study is an example of how to incorporate safety in the NEPA process to address major transportation needs.

Safety and NEPA Case Studies and Noteworthy Practices: North Dakota's US 85 Expansion

Author: Federal Highway Administration
The North Dakota US 85 Expansion Case Study is an example of how projects can proactively address emerging system needs through the National Environmental Policy Act and incorporate safety.

HSIP Project Evaluation

Author: Federal Highway Administration

The HSIP Project Evaluation website provides case studies with noteworthy practices for project evaluation.

SS4A Spring 2026 Newsletter

Author: SS4A Technical Assistance Center (TAC)

In this edition of the SS4A Quarterly Newsletter, you’ll find new Action Plan resources, tools, real-world examples, and noteworthy practices available on the SS4A Clearinghouse website to support grant recipients. We also highlight the FY25 grant recipients announced in late 2025 and the latest traffic safety data from NHTSA.