§625.4. Standards, policies, and standard specifications. — Inbound Citations

(b) The standards, policies, and standard specifications cited in § 625.4 of this part contain specific criteria and controls for the design of NHS projects. Deviations from specific minimum values therein are to be handled in accordance with procedures in paragraph (f) of this section. If there is a conflict between criteria in the documents enumerated in § 625.4 of this part, the latest listed standard, policy, or standard specification will govern.

(1) For existing bridges originally designed to any edition of the AASHTO Standard Specifications for Highway Bridges, modifications may be designed to the Standard Specifications for Highway Bridges, 17th Edition, AASHTO, 2002 (incorporated by reference; see § 625.4(d)), or to the standards and specifications that are listed in § 625.4(b).

(2) Approval within the delegated authority provided by FHWA Order M1100.1A may be given, on a programmatic basis, to use a more recent edition of any standard or specification incorporated by reference under § 625.4(d).

(1) A Policy on Geometric Design of Highways and Streets, AASHTO (incorporated by reference; see paragraph (d) of this section).