Halmar Int. Completes Major Construction On U.S. Rte. 1 Bridge Over Mamaroneck River
MAMARONECK, NY—New York State officials announced on Aug. 2 that major construction was completed on a project that reconstructed the bridge carrying U.S. Route 1 over the Mamaroneck River in the Town of Mamaroneck.
The project effectively rebuilt the 129-year-old stone arch bridge from the ground up, adding new structural supports to create a more durable structure that’s more accessible and better able to withstand floods and other severe weather impacts, the state said in a statement.
Completion of the U.S. Route 1 bridge marks the end of a $115-million project (Lower Westchester Bridge Bundle) that began in 2020 to replace or upgrade several flood-prone bridges in lower Westchester County and ensure that some of the region’s most vital commuter routes are prepared for the growing impacts of climate change.
The Lower Westchester Bridge Bundle was awarded in 2020 as a Design-Build project with Halmar International, LLC of Nanuet, NY as the lead contractor. Other partners include: M.G. McLaren Engineering and Land Surveying, P.C., Schnabel Engineering of New York and Shumaker Consulting Engineering and Land Surveying, D.P.C.
As part of the project, the original stone arch bridge was reinforced and strengthened with a cast-in-place concrete liner installed underneath the bridge and new foundation elements were drilled into the underlying rock. The bridge was also widened and pedestrian walkways created to enhance safety and improve access to nearby businesses, schools and other popular destinations in Mamaroneck.
Additionally, new traffic signals and pedestrian safety enhancements were implemented at the busy intersection of U.S Route 1 and Mamaroneck Avenue, including signals, curb ramps and crosswalks. The project also included the replacement of retaining walls and the embankment supporting Meighan Park (Harbor Island Pocket Park), a small walking park, on the southwest corner of the bridge structure. Because of the six-to-eight-foot tidal influx of the river, divers and special equipment were used to progress this project. The new bridge structure was constructed off trusses that spanned the entire width of the Mamaroneck River under the existing bridge.
The Lower Westchester Bridge Bundle initiative also replaced two bridges on the Saw Mill River Parkway over the Saw Mill River in Pleasantville and the East Lincoln Avenue bridge over the Hutchinson River Parkway in the City of Mount Vernon/Village of Pelham. All of these locations focused on drainage improvements and the reconstruction of roadways prone to flooding, while enhancing safety and improving the region’s resiliency following storm events caused by climate change.