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MAP-21 - Moving Ahead for Progress in the 21st Century

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Apportionment

Main statutory citation(s): MAP-21 §1105, 1122; 23 USC 104, 130, 213

Overview

Prior to MAP-21, each apportioned program had its own formula for distribution, and the total amount of Federal assistance a State received was the sum of the amounts it received for each program. MAP-21 instead provides a total apportionment for each State and then divides that State amount among individual apportioned programs.

Total funding for Federal-aid highway formula programs

MAP-21 authorizes a total combined amount ($37.5 billion in FY13 and $37.8 billion in FY14) in contract authority to fund five formula programs (including certain setasides within the programs described below):

Division of total apportioned amount among States

MAP-21 requires FHWA to divide the total authorized amount among the States in the following manner:

Division of a State's apportionment among programs

After determining the total apportionment for a State, MAP-21 divides that apportionment among the State's individual formula programs in the following manner:

CMAQ
[23 USC 104(b)(4)]
Funded in an amount equal to the State's total apportionment multiplied by the following ratio: State's FY09 CMAQ $
State's total FY09 apportionments
Metro Planning
[23 USC 104(b)(5)]
Funded in an amount equal to the State's total apportionment multiplied by the following ratio: State's FY09 Metro Planning $
State's total FY09 apportionments
NHPP [23 USC 104(b)(1)]
STP [23 USC 104(b)(2)]
HSIP [23 USC 104(b)(3)]
The remainder (net of CMAQ and Metro Planning) is divided based on the following proportions: 63.7% to NHPP
29.3% to STP
7.0% to HSIP
Railway Highway Crossings
[23 USC 130]
Funded with an amount set aside from the State's HSIP apportionment –
  • Based on a current law formula for distribution; and
  • Such that the national total for the program is $220 million per year.
Transportation Alternatives (TA)
[§1122; 23 USC 213]
Funded via setaside from NHPP, STP, HSIP, CMAQ, & Metro Planning:
  • The State receives a share of total TA funding equal to its share of total FY09 transportation enhancements (TE) funding.
  • The setaside is taken proportionally from each of the five programs in relation to the relative sizes of the State's apportionments (e.g., if a State's NHPP apportionment makes up 50% of what the State receives for the five programs, 50% of the setaside is applied against NHPP).
  • Unless the State opts out, an amount of TA equal to the State's FY09 Recreational Trails Program (RTP) apportionment is set aside for the RTP.

Page last modified on September 12, 2013.
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