Spot, Zone, and Overcoat Painting of Steel Bridges

Over the past 25 to 30 years steel bridges in Kentucky have gradually had their lead-based coatings removed and replaced, typically with zinc-based systems. Many systems are reaching their end of service lives and need to be replaced. Others are in various stages of degradation. When considering the cost of complete coating removal and replacement, it is necessary to consider less expensive options, such as spot, zone, and overcoat painting. Removal and replacement (maintenance) painting typically lasts 20 years. To maintain protective coatings on KYTC’s 1,100+ steel bridges would require painting 50 bridges per year. Cost savings can be realized by performing coating condition assessments to identify steel bridges for spot, zone, and/or overcoat painting and by developing painting strategies that include single coat and two-coat systems.


    • English


    • Status: Active
    • Funding: $180000
    • Contract Numbers:

      SPR 22-613

    • Sponsor Organizations:

      Kentucky Transportation Cabinet

      200 Mero Street
      Frankfort, KY  United States  40622
    • Performing Organizations:

      University of Kentucky, Lexington

      Kentucky Transportation Center College of Engineering, 176 Raymond Building
      Lexington, KY  United States  40506-0281
    • Principal Investigators:

      Palle, Sudhir

    • Start Date: 20210701
    • Expected Completion Date: 20240630
    • Actual Completion Date: 0

    Subject/Index Terms

    Filing Info

    • Accession Number: 01781446
    • Record Type: Research project
    • Source Agency: University of Kentucky, Lexington
    • Contract Numbers: SPR 22-613
    • Files: RIP, STATEDOT
    • Created Date: Sep 8 2021 11:04AM