StacksVerified U.S. regulatory reference

25 CFR §170.455

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The appropriate design standards must be applied to each construction project consistent with a minimum 20-year design life for highway projects and 75-year design life for highway bridges. The design of TTP projects must take into consideration:
  1. (a)The existing and planned future use of the facility in a manner that is conducive to safety, durability, and economy of maintenance;
  2. (b)The particular needs of each locality, and the environmental, scenic, historic, aesthetic, community, and other cultural values and mobility needs in a cost effective manner; and
  3. (c)Access and accommodation for other modes of transportation.