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Fact Sheets on Highway Provisions
NATIONAL CORRIDOR INFRASTRUCTURE IMPROVEMENT PROGRAM
A discretionary program that provides funding for construction of highway projects in corridors of national significance to promote economic growth and international or interregional trade. This program replaces TEA-21 section 1118, National Corridor Planning and Development program.
SAFETEA-LU Section(s): 1101(a)(10), 1302, 1935, 1936, 1953; 1102
Funded by contract authority, to remain available until expended. Funds are subject to the overall Federal-aid obligation limitation. Projects will receive special no year obligation limitation that is available until used. In addition, an unspecified amount of funding is authorized from the General Fund, which would require appropriation action to become available [1102, 1953]
Funding for projects will be awarded through a selection process conducted by the Secretary that:
For each project designated in section 1302, the Secretary shall allocate a portion of the amount designated for that project: 10% in 2005, 20% for 2006, 25% for 2007, 25% for 2008 and 20% for 2009
The funds designated for a project in section 1302 are available only for that project with the following exception: Funds allocated for a project specified below may be obligated for any other of these projects in the same State:
except that the authorization for a project from the category list may not be reduced. 
Corridor projects also may be advanced with funds apportioned under 23 U.S.C. 104(b) from a program under which the project would be eligible, and the funds are to be restored to that program from future allocations for the project. 
In addition to the funding shown above for FY 2005, $140 M is provided for the National Corridor Planning and Development and Coordinated Border Infrastructure programs combined under sections 1118 and 1119 of TEA-21 to be administered under the terms of those sections. [1101(a)(19)]
Eligible Use of Funds
Highway construction projects in corridors of national significance will be selected with consideration of the extent to which:
and the value of the cargo carried by commercial vehicle traffic in the corridor and the economic costs arising from congestion in the corridor
The Federal share is generally 80 percent, subject to the sliding scale adjustment. When the funds are used for Interstate projects to add high occupancy vehicle or auxiliary lanes, but not other lanes, the Federal share may be 90 percent, also subject to the sliding scale adjustment. Certain safety improvements listed in 23 USC 120(c) have a Federal share of 100 percent.