2010 Street Overlay, Rehabilitation Pavement Design, Sacramento, CA

Pavement Engineering: Evaluation & Design
Key Services: 
  • Rehabilitation Pavement Design
  • Pavement Coring
  • Deflection Testing

Provide pavement rehabilitation designs for seven city streets ranging from two to five lanes wide, including parking areas, bike lanes, turn lanes, and shoulders in Sacramento, CA.

QES' responsibilities for the Sacramento, CA 2010 Street Overlay project consisted of providing pavement rehabilitation designs for 17 lane-miles of pavement, divided between seven city streets. Specifically included in the development of the pavement designs were deflection testing, coring and sampling, and materials testing. The streets were reviewed, and a field testing and sampling plan was devised. Field testing consisted of taking pavement deflection measurements using a heavy Falling Weight Deflectometer (HWD), pavement distress surveys, and drainage characteristic evaluations. Field sampling consisted of extracting pavement cores, auguring through base and subbase materials, and collecting samples of the subgrade soils for R-value testing. Deflection measurements were analyzed to determine the structural adequacy of the pavement. This information, in conjunction with the visual condition survey, was used to determine if the roadways required functional or structural rehabilitation treatments. Pavement rehabilitation designs were completed following the procedures in the Caltrans Flexible Pavement Rehabilitation Manual. QES served as the prime contractor and performed all project management, coordinated all field data collection efforts, analyzed all data, and developed the pavement rehabilitation recommendations and report. QES also provided traffic classification counts and traffic control during field testing.