A bill to authorize the apportionment of funds for the Interstate System, to amend section 103(e)(4) of title 23, United States Code, and for other purposes.

[AI summary unavailable — showing source text] Directs the Secretary of Transportation to apportion for fiscal years 1981 and 1982 fiscal years the sums authorized to be appropriated for expenditure on the National System of Interstate and Defense Highways using specified factors. Limits the authority of the Secretary to withdraw approval of any route or portion thereof on the Interstate System to withdrawals made before September 30, 1979. Makes available to the Secretary for projects in substitution a sum equal to the Federal share of the cost to complete a route withdrawn between June 20, 1979 and June 30, 1979. Makes available to the Secretary for projects substituted for such withdrawn route a sum equal to the Federal share of the cost to complete a route withdrawn between June 20, 1979 and June 30, 1979.…