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e-CFR data is current as of October 22, 2020

Title 25Chapter ISubchapter HPart 170Subpart D → §170.456


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


§170.456   How can a Tribe request an exception from the design standards?

(a) A Tribe can request an exception from the required design standards from FHWA. The engineer of record (the State licensed civil engineer whose name and professional stamp appear on the PS&E or who is responsible for the overall project design) must submit written documentation with appropriate supporting data, sketches, details, and justification based on engineering analysis.

(b) FHWA can approve a project design that does not conform to the minimum criteria only after giving due consideration to all project conditions, such as:

(1) Maximum service and safety benefits for the dollar invested;

(2) Compatibility with adjacent features; and

(3) Probable time before reconstruction of the project due to changed conditions or transportation demands.

(c) FHWA has 30 days from receiving the request to approve or decline the exception.

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