This project provides shared-use path improvements along 4.7 miles of MacArthur Boulevard from I-495 to the District of Columbia. To increase capacity and enhance safety for users, the existing shared-use path along the south side of MacArthur Boulevard will be widened, wherever feasible, to an 8' paved width with a 5' wide grass buffer provided between the path and the roadway. In addition, to encourage alternate modes of travel and to accommodate the needs of on-road commuters and experienced bicyclists, the roadway itself will be widened, wherever feasible, to a consistent 26' pavement width, essentially adding a 3' wide shoulder to each side of the existing 20' pavement width. The project will also provide safety improvements along MacArthur Boulevard to enhance overall safety for pedestrians, cyclists and motorists alike. The project also includes pavement rehabilitation on MacArthur Blvd, from Stable Lane to the I-495 underpass (Segment 1) and from I-495 to Oberlin Ave (Segment 2).

I-495 to Oberlin Avenue (Segment II): Construction of approximately 2.6 miles of shared-use path completed in FY15. Oberlin Avenue to the District line (Segment III): Final design started in FY22 and will be completed in FY26. Construction will start in FY26 and will be completed in FY27.

Cost increase is due to additional of pavement rehabilitation for Segment 1, and updated estimate for construction of Segment 3.

This project improves safety and accessibility for pedestrians and bicyclists of all experience levels and enhances connectivity with other bikeways in the vicinity. In addition, spot improvements will improve deficiencies and immediate safety on MacArthur Boulevard. The Department of Transportation (DOT) prepared a Transportation Facility Planning Study document entitled "MacArthur Boulevard Bike Path/Lane Improvements". Project Prospectus in February 2004, is consistent with the October 2004 Potomac Subregion Master Plan and the 2018 Bicycle Master Plan.

Preliminary design costs were funded through Facility Planning: Transportation (CIP #509337). The project will help the County achieve its Vision Zero goals to reduce deaths and serious injuries on County Roadways to zero by 2030.

Stable Lane to I-495 (Segment I): Final design and construction is not currently funded. FY25 actuals funding switch between GO bonds and Impact Taxes.

A pedestrian impact analysis has been completed for this project.

U.S. Army Corps of Engineers (Washington Aqueduct Division), National Park Service, Maryland Department Of Natural Resources, Maryland-National Capital Park and Planning Commission, Town Of Glen Echo, WSSC Water, Pepco, Verizon, Comcast.