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HYDINFRA

Learn about inspection codes and flags for culverts, identify pipe and structure issues, and prevent road failures. Key terms and guidelines provided.

cynthiamcdaniel
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HYDINFRA

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  1. Pipe Condition Flags HYDINFRA

  2. Purpose of Culvert Inspections • Identify bad pipes to be replaced during scheduled highway project. • Reduce the incidence of road failures from deteriorated pipes.

  3. Inspection Basics • Inspection Codes: • 1 = Good as new condition • 2 = Some wear, but structurally sound • 3 = Extensive deterioration, consider for repair or replacement • 4 = Critical deterioration • 0 = Not rate-able

  4. CMP culvert distortion and deterioration TH 95 Culvert at MP 80

  5. TH 95 at MP 80 HYDINFRA Inspection Terms

  6. Pipe Inspection Flags

  7. Structure Inspection Flags

  8. Special Structure Inspection Flags

  9. Road Distress

  10. Pavement and guardrail indicate problem here

  11. Special Structure: Headwall • Condition 4 • Flag for Repair Joint Separation (from pipe)

  12. Pipe (plus 2 special structures– Bend and Reducer): • Bend • Reducer 48” to 36” • Pipe Size 36” • Holes • Piping • Pitting/Rusting • Spalling/Flaking

  13. Pipe: • Condition 4 • Flags: • Repair • Pitting/Rusting • Spalling/Flaking • Holes • Piping Misalignment

  14. Pipe: • Deformation • Separation • Misalignment

  15. Pipe: • Holes • Silt • Pitting/Rusting • Spalling/Flaking • Deformation • Piping

  16. (second pipe above 36” cmp)

  17. 12” Pipe Flume: Condition 2 ? • 36” Pipe: • Separation • Inslope Cavity (hole in soil above pipe)

  18. Misalignment • Joints Separated • Infiltration

  19. Banks are slumping into channel Erosion – Channel Degradation

  20. Erosion – Channel Degradation

  21. Pipe: 36” CMP Condition 4 • Inspection Flags: • Repair • Pitting/Rusting • Spalling/Flaking • Erosion • Piping • Misalignment • Joints Separated • Holes • Deformation • Infiltration • Inslope Cavitation • Void in Road • Road Distress/Deformation 12” CMP with Apron: Condition 2 ? (but installation should be noted in comments) • Special Structure: • Headwall • Condition 4 • Repair • Joints Separated • Deformation • Pitting/Rusting Energy Dissipater?

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