The bill lets communities use federal STBG money to install roundabouts, trading improved traffic flow and likely crash reduction for higher federal spending and short‑term construction disruptions.
Drivers, transit users, and local governments can use federal Surface Transportation Block Grant funds to build roundabouts, improving traffic flow and reducing intersection delays.
Drivers and pedestrians in urban and rural communities are likely to see fewer severe crashes because roundabouts typically lower vehicle speeds and reduce deadly T‑bone collisions at intersections.
Taxpayers and local governments may face higher federal transportation spending to support local roundabout projects, potentially increasing federal outlays or crowding out other STBG priorities.
Drivers and small-business owners may experience short‑term congestion, detours, and access changes during roundabout construction and after roadway redesigns.
Based on analysis of 2 sections of legislative text.
Allows Surface Transportation Block Grant funds to be used for construction of roundabouts.
Official title: To amend section 133 of title 23, United States Code, to include roundabouts as eligible projects under the surface transportation block grant program, and for other purposes.
Introduced May 15, 2025 by Laura Gillen · Last progress May 15, 2025
Adds roundabout construction to the list of eligible activities under the Surface Transportation Block Grant Program, allowing federal STBG funds to be used for building or reconstructing roundabouts. The change is a single, narrow amendment inserting “construction of roundabouts” as an allowable use of those formula transportation funds.