The Benton County Public Works Department is soliciting proposals from qualified firms to perform a pavement condition survey utilizing the A2 Method (visual inspection and evaluation of a road system based on classification, severity and extent of road distresses/defects). {The County will accept and review proposals from vendors that utilize visual methods, or a combination of visual and automated/semi-automated technology to rate roadways} on 324 centerline-miles of paved County Roads, which includes approximately 4 miles of Urban Arterial, and 320 miles of Urban/Rural Collector. After selection, a detailed project scope and budget will be negotiated with the chosen firm or individual to be followed by completion of a Professional Services Agreement. It is expected that this agreement will be a “Unit Cost” contract based on the actual centerline- miles surveyed. Benton County is requesting proposals for pavement condition ratings for approximately 324 centerline-miles of Arterial and Collector roadways, in 0.10-mile segments. The survey shall be driven in one direction and the contractor will be required to survey 100% of one lane employing the A2 Method for each road/road segment. The pavement condition shall be evaluated according to the classification, severity and extent criteria defined in the current edition of “Pavement Surface Condition Field Rating Manual for Asphalt Pavement”, published by the Northwest Pavement Management Association (NWPMA). The following distresses are listed by the NWPMA as Core Program Defects and shall be evaluated and included in the survey: Flexible Pavement (324 Centerline-miles); a) Rutting and Wear; b) Alligator Cracking; c) Longitudinal Cracking; d) Non-wheel Path Longitudinal Cracking; e) Transverse Cracking; f) Raveling and Aging; g) Flushing/Bleeding Patching (maintenance and utility); h) Corrugation and Waves; i) Sags and Humps; j) Block Cracking; k) Pavement Edge Condition; l) Crack Seal Condition
