Bridge Class Culverts

Evaluate new and existing bridge class culverts for potential scour using the following:
  • Bridge Class Culverts with Bottoms
    • Assess scour coding based on field observations using the criteria listed on the Scour Summary Sheet for Bridge Class Culverts (Form 2606)
  • Bridge Class Culverts without Bottoms
    • Use the guidelines for either new bridges or existing bridges outlined above for scour 
      evaluation
    • New bridge class culvert without bottoms should be supported with deep foundations.