Route 49 – Salem

This project involved engineering services for NJDOT Region IV Design. Taylor Wiseman & Taylor designed 1.24 miles of Concrete Pavement Restoration (CPR) on Route 49, located within the downtown area of the City of Salem. The typical section consisted of a two-lane undivided roadway with shoulders that were utilized for parallel parking throughout. This project was unique in that both reinforced and non-reinforced concrete surface course construction were encountered. CADD topographic base maps were prepared utilizing a digital data collector for field survey information. The horizontal geometry and original construction methods were obtained from the 45+/- year old as-built plans. A complete and thorough visual inspection was conducted on each individual pavement slab and joint to assess the condition of the existing pavement. In addition, TWT coordinated and provided traffic control for a Ground Penetrating Radar Survey (GPRS), performed by a subconsultant, which located any potential subsurface voids. The results of the pavement inspection and GPRS determined that the CPR alternative was the most cost effective. Construction procedures implemented included replacement or patching of badly damaged slabs; repair of spalls; sawing, cleaning and resealing joints and cracks; and diamond grinding of the surface. The object of this grinding was to leave the concrete with a corduroy type surface behind. Restorative type diamond grinding was anticipated to result in corrected warped slabs, removed wheel ruts, reduced hydroplaning and improved skid resistance, improved surface drainage and improved pavement profile.