Skip to content U.S. Department of Transportation/Federal Highway AdministrationU.S. Department of Transportation/Federal Highway Administration
Office of Planning, Environment, & Realty (HEP)

Reference Guide

IRR Programs and Regulations

Section 1

25 CFR Part 170; Indian Reservation Roads Program; Final Rule
July 19, 2004

Section 2

Part 661 - Indian Reservation Road Bridge Program
April 1, 2003

Indian Reservation Road Bridge Program - Proposed Regulations
June, 2007

Updated: 7/21/2015
HEP Home Planning Environment Real Estate
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000

All Federal Highway Administration (FHWA) information technology systems will be unavailable, Friday, October 28, at 10:00 p.m. to Sunday, October 30, at 11:59 p.m., EDT, while work is being performed on the network. During that time, users will not be able to access any FHWA systems.

If you have any questions or problems, please contact the 5-Help Service Center @ (866) 466-5221 or