Federal Aid Highway Improvement Act of 1981

[AI summary unavailable — showing source text] Federal- Aid Highway Improvement Act of 1981 - Amends the Federal-Aid Highway Act of 1956 to increase the authorization of appropriations for the Interstate Highway System for fiscal years 1983 through 1990. Limits the obligation of such funds to specified objectives. Directs the Secretary of Transportation, in making the revised estimate of the cost of completing the designated Interstate System for the January, 1983 report to Congress, to include only those costs eligible under such Act, as amended. Directs the Secretary to use specified apportionment factors in allocating funds for the Interstate System. Authorizes appropriations, for fiscal years 1982 through 1986, out of the Highway Trust Fund, for: (1) the Federal aid primary system in rural and urban areas; (2) forest highways; (3) public lands highways; (4) bridge replacement and rehabilitation; and (5) highway safety improvements. Prohibits a State from receiving less than one-half of one percent of the total apportionment for the Interstate System. Revises apportionments for the highway bridge replacement and rehabilitation program. Amends the Highway Safety Acts of 1973 and 1978 and the Federal-Aid Highway Acts of 1973 a…