County Commissioners announce bridge replacement project over Swimming River Reservoir

For Immediate Release:
October 3, 2025

County Commissioners announce bridge replacement project over Swimming River Reservoir
Phalanx Rd. to remain open during construction

FREEHOLD, NJ - The Monmouth County Board of County Commissioners has announced a project to replace Bridge A-38 on County Route 54 (Phalanx Road) over Swimming River Reservoir in the Townships of Colts Neck and Middletown.

"For the replacement of Bridge A-38, construction is expected to begin on or about October 6 and continue for two years but Phalanx Road will remain open throughout construction and a temporary traffic pattern will utilize one lane of traffic," said Commissioner Director Thomas A. Arnone, liaison to the Division of Engineering. "We remind drivers in the area to follow all posted signs during construction. Temporary changes to traffic patterns may also occur, so please stay alert while driving in the area. We appreciate the public's patience as we work on this important infrastructure project."

Additionally, for 90 calendar days in late summer/early fall of 2026, there will be a road closure with a posted detour. The detour route will use County Route 520 (Newman Springs Road), County Route 50 (Swimming River Road), County Route 537 (Colts Neck Road) and Laird Road.

"Please note that Monmouth County is committed to the safety of all those who use our roadways; therefore, we ask residents to follow all posted detours," said Commissioner Director Arnone.

In total, Monmouth County maintains approximately 1,000 lane miles of roads, 980 bridges and culverts and 250 traffic signals and beacons.

For news and alerts from Monmouth County, go to visitmonmouth.com or follow @MonmouthGovNJ on Facebook, X and Instagram.

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