Belle Mead-Blawenburg Road (CR 601) Bridge D0303

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Replacement of County Bridge No. D0303, Belle Mead-Blawenburg Road (CR 601) over Back Brook, Township of Montgomery

Construction Announcement

It is anticipated that this project will be advertised for bid in May 2019.

The Belle Mead-Blawenburg Road (CR 601) Bridge, located approximately 500 fee north of the intersection of Grandview Road and 0.8 mile south of West Dutchtown Harlingen Road (CR 604), is scheduled to be fully closed to vehicular and pedestrian/bicycle traffic during construction, starting in April 2020 for 14 days, then closed only on weekends following the installation of the new bridge, for completion of the work.  The Project Location Map can be viewed here.

A detour route will be posted along Belle Mead-Blawenburg Road (CR 601), Route 206, and Georgetown-Franklin Turnpike (CR 518).  Local access will still be maintained.  The Detour Plan can be viewed here.

Project Description

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:

For more information contact the Engineering Division.

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