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e-CFR data is current as of November 25, 2020

Title 25Chapter ISubchapter HPart 170Subpart D → §170.455


Title 25: Indians
PART 170—TRIBAL TRANSPORTATION PROGRAM
Subpart D—Planning, Design, and Construction of Tribal Transportation Program Facilities


§170.455   What other factors must influence project design?

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:

(a) The existing and planned future use of the facility in a manner that is conducive to safety, durability, and economy of maintenance;

(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

(c) Access and accommodation for other modes of transportation.

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