2002—Subsec. (a). Pub. L. 107–217 substituted “sections 3141–3144, 3146, and 3147 of title 40” for “the Act of March 3, 1931, known as the Davis-Bacon Act (40 U.S.C. 276a)”.

1991—Subsec. (a). Pub. L. 102–240, which directed substitution of “highways” for “systems, the primary and secondary, as well as their extension in urban areas, and the Interstate system,” was executed by making the substitution for the quoted words which in the original contained the word “extensions” rather than “extension”, to reflect the probable intent of Congress.

1987—Subsec. (a). Pub. L. 100–17 substituted “March 3, 1931” for “August 30, 1935” and “276a” for “267a”.

1983—Subsec. (a). Pub. L. 97–424 struck out “initial” after “subcontractors on the”.

1968—Subsec. (a). Pub. L. 90–495 extended wage rate provisions to the construction of all Federal-aid highway projects by amending provisions limiting them only to the Interstate System.

Subsec. (b). Pub. L. 90–495 substituted “any of the Federal-aid systems” for “the Interstate System”.

Subsec. (c). Pub. L. 90–495 added subsec. (c).

Amendment by Pub. L. 102–240 effective Dec. 18, 1991, and applicable to funds authorized to be appropriated or made available after Sept. 30, 1991, and, with certain exceptions, not applicable to funds appropriated or made available on or before Sept. 30, 1991, see section 1100 of Pub. L. 102–240, set out as a note under section 104 of this title.

Amendment by Pub. L. 90–495 effective Aug. 23, 1968, see section 37 of Pub. L. 90–495, set out as a note under section 101 of this title.