FTA proposes to boost transit construction funding share for corridors with above-average birth and marriage rates

The Federal Transit Administration published proposed revisions to its Capital Investment Grants program in the Federal Register on 1 October 2026, formalising a policy direction that Transportation Secretary Sean Duffy first announced in January 2025^[1]. Under the draft guidance, the federal share of eligible project costs for New Starts and Core Capacity transit construction could rise by up to 10 percentage points if birth and marriage rates within a project's transit corridor meet or exceed national benchmarks^[1].

What the CIG proposal would change

The CIG program is the largest federal discretionary grant program for transit capital investments, covering heavy rail, commuter rail, light rail, streetcars, and bus rapid transit. The baseline federal share for major new transit infrastructure is currently capped at 40% of total project cost, a floor set by Congress in annual funding bills since 2020^[1].

The proposed guidance would adjust that share - up or down - using six criteria. Demographic factors are among them:

• A birth rate at or above the national average within a one-mile project corridor could add up to 5 percentage points to the federal share.
• A marriage rate at or above the national average in the same corridor could add a further 5 percentage points.
• Other upward factors include cost-effectiveness, mobility improvements, congestion relief, land use or capacity needs, and environmental benefits.
• Negative adjustments are also possible - for example, a project rated low on cost-effectiveness carries a -25% adjustment - but the proposal includes no downward adjustment specifically for below-average birth or marriage rates.

The existing federal share is capped at 60% for new large transit infrastructure and 80% for projects expanding capacity on existing systems. The demographic add-ons would be locked in at the point a project enters the engineering phase, and the final guidance, once published, would apply immediately to all projects in the CIG pipeline with no grandfathering.

Projects already in the pipeline face re-rating risk

Senator Patty Murray, Democrat of Washington and vice chair of the Senate Appropriations Committee, said the change would apply to approximately 40 projects already enrolled in the CIG program, potentially triggering new rating and cost-share requirements^[1]. Those projects span more than 20 states and include the Hudson Tunnel, New York's Second Avenue Subway expansion, light rail in Austin, Texas, and double-tracking of the FrontRunner commuter rail line in Utah.

Murray characterised the proposal as "bizarre and dystopian" and questioned whether birth and marriage rates bear any direct relationship to a corridor's transportation needs or population size^[1].

Policy roots and comment window

Secretary Duffy signed DOT Order 2100.7 on 29 January 2025, directing all DOT programs to give preference, where practicable and consistent with law, to communities with marriage and birth rates exceeding the national average. The October 2026 Federal Register notice translates that order into specific numerical adjustments for the first time. The FTA incorporated suggestions from 22 respondents who submitted comments in response to a Request for Information it issued on 19 August 2025.

Public comments on the proposed guidance must be submitted to docket FTA-2026-0331 at regulations.gov by 16 November 2026. The agency has said the final guidance will take effect immediately upon publication, with no exemptions for projects currently in engineering.

The comment period closes five weeks from now. Transit agencies, state DOTs, and contractors with projects in the CIG pipeline will need to assess how the proposed demographic adjustments interact with their existing cost-share agreements before the window shuts.