Colorado
Bridge Inspection and Load Rating
Routine, in-depth and load rating inspections of public and private bridges by qualified engineers.
What the work involves
The federal National Bridge Inspection Standards require routine inspections of public highway bridges, generally at intervals not exceeding 24 months, with program oversight and load ratings by qualified engineers. Private owners such as HOAs, campuses and industrial sites also commission inspections and load ratings to decide whether to post weight limits or repair. Underwater and scour inspections are added for bridges over water.
Local conditions we plan for
- Expansive (swelling) clay and claystone soils along the Front Range
- Wildfire and post fire debris flows
- Rockfall and landslides in mountain corridors
- Hail and snow loads
Building code: No statewide IBC/IRC; codes adopted by local jurisdictions (ICC adoption chart, April 2026).
When you need it
- Public bridge due for its inspection cycle
- HOA or private owner unsure of bridge safety
- Need to post a weight limit
- After a flood, impact or other damage
Frequently asked questions
How much does bridge Inspection and Load Rating cost?
Across the US, bridge Inspection and Load Rating usually costs $1,500 to $25,000 per bridge. Estimate. Small private bridges are at the low end; complex or underwater inspections higher.
How long does bridge Inspection and Load Rating take?
Plan on 1 to 6 weeks from signed proposal to stamped deliverables, longer if a site visit, soil testing or a permit review cycle is involved.
Is a permit required for bridge Inspection and Load Rating?
Often not on its own, but the findings frequently lead to work that does need a permit. We tell you which parts of the follow-up work your local building department will review, and can prepare those drawings too.
How do I verify an engineer's license in Colorado?
Engineers practicing in Colorado are licensed by the Colorado State Board of Licensure for Architects, Professional Engineers and Professional Land Surveyors. You can confirm a license number and its status in the board's public license search before you sign a contract.
Which building code applies in Colorado?
No statewide IBC/IRC; codes adopted by local jurisdictions (ICC adoption chart, April 2026). Cities and counties can add local amendments, which is one reason to hire an engineer who works in your area.
What site problems do engineers see most in Colorado?
Common issues include expansive (swelling) clay and claystone soils along the Front Range, wildfire and post fire debris flows, rockfall and landslides in mountain corridors and hail and snow loads.