Replacement of County Bridge No. D0303, Belle Mead-Blawenburg Road (CR 601) over Back Brook, Township of Montgomery
This project’s construction contract was awarded to Assuncao Brothers, Inc. on June 25, 2019. The Pre-Construction Meeting was held on February 4, 2020.
The Belle Mead-Blawenburg Road (CR 601) Bridge, located approximately 500 feet north of the intersection of Grandview Road and 0.8 mile south of West Dutchtown Harlingen Road (CR 604), was fully closed to vehicular and pedestrian/bicycle traffic on Friday, April 17, 2020 at 8:45am. The duration of this road closure will be 4 weeks for completion of all construction work as one continuous operation. Daily lane closures after the new bridge is installed will no longer be required. The Project Location Map can be viewed here.
[UPDATE 6-19-2020] The road and bridge construction associated with this project is now complete. CR 601 road was reopened to all traffic on Friday, June 19th at approximately 2:15PM.
IMPORTANT NOTE: CSX Railroad is scheduled to begin their at-grade rail crossing replacement at Belle Mead-Blawenburg Road (CR 601) just south of Grandview Road, starting on Monday, June 22 for approximately 5 days, weather permitting. During this work, CR 601 will be closed to all through traffic at the at-grade railroad crossing. A detour will be posted. Access to Grandview Road will be from the northern section of Belle Mead-Blawenburg Road (CR 601). The County's bridge replacement and CSX's at-grade crossing work could not have been concurrently, as this would have completely blocked the Grandview Road intersection.
The CSX Contractor will maintain the current detour along Belle Mead-Blawenburg Road (CR 601), Route 206, and Georgetown-Franklin Turnpike (CR 518), with modification that Grandview Road will be open via the northern section of Belle Mead-Blawenburg Road (CR 601). ALL TRUCK TRAFFIC SHOULD CONTINUE TO FOLLOW POSTED DETOUR ROUTE ALONG CR 518 AND RT 206. Access to Gibraltar Quarry will still be approached from the northern section of CR 601.
[UPDATE 6-26-2020} The at-grade rail crossing work is now complete. CR 601 was fully reopened to all traffic on Friday, June 26th at approximately 4:30PM.
County Bridge No. D0303 carries Belle Mead-Blawenburg Road (CR 601) over Back Brook in the Township of Montgomery. The 13' single-span structure, with unknown construction date, is located on a tangent section of Belle Mead-Blawenburg Road between Grandview Road to the south and Dutchtown-Zion Road to the north. The bridge's 26.7' clear roadway width accommodates a single lane of traffic in each direction.
The existing structure consists of simply supported rolled steel beams with reinforced concrete deck slab supported on masonry abutments. The masonry abutments are flanked by cast-in-place concrete wingwalls. The deck slab is overlaid with approximately 12 inches of bituminous pavement. The 1st cycle of the Bridge Evaluation Survey Report, dated 6/24/2014, rated the overall condition of the structure as poor due to both the superstructure and the substructure. The superstructure is in poor condition due to the stringers typically exhibit moderate rust with heavy laminar rust and section loss adjacent to the abutments. The substructure is in poor condition due to the missing pointing and numerous small voids throughout both breastwalls. The southwest wingwall is spalled and fractured at the southern half.
The structure is classified as Structural Deficient and also Functionally Obsolete. The proposed structure for Bridge D0303 will consist of a precast concrete three-sided rigid frame supported on precast concrete footings, and with precast concrete wingwalls. Concrete parapets and wingwall faces will have stone veneer. The roadway width will be increased to 36' curb-to-curb through the bridge limits, to be consistent with previous bridge replacements along CR 601 north and south of the project site, and then taper back to meet existing conditions. The proposed bridge replacement will remove the bridge from both the structurally deficient and functionally obsolete lists.
This project is funded by NJDOT FY2017 Local Bridges Future Needs grant.
Public Information Meeting
A public information meeting in regards to this project was held on March 28, 2019. The purpose of this meeting was to inform local residents, officials, and the general public of Somerset County’s proposed plans to replace the Belle Mead-Blawenburg Road (CR 601) Bridge over Back Brook. The information meeting allows the public an opportunity to examine the concept plans for the project and make comments. The display boards from the Public Information Meeting included:
- Photos of Existing Conditions
- Construction Plan
- General Property Parcel Map
- General Plan, Elevations and Section - Bridge D0303
- Traffic Plan - Detour Map - 14 Day Full Closure and Weekend Closures [now, 4-week full closure only]
- Traffic Plan - Lanes Open / Shoulders Closed - Weekdays [no longer required]
For more information contact the Engineering Division.