Bridges 101

The Federal Highway Administration classifies structures as either major or minor based on their span length.

• Major structures are over 20 feet long
• Minor structures range from 4 to 20 feet

Maintenance and repairs include:

• Scour protection for stability and erosion prevention
• Substructure repairs (abutments and piers)
• Superstructure repairs (girders, decks, curbs)
• Bridge and guard rail work

Inspections:

• Major structures are inspected every 2 years
• Minor structures every 4 years

Maintenance needs identified during inspections are prioritized and scheduled for County crews or contractors.

Private bridges and culverts are not maintained by Larimer County.

Private Crossings, Bridges, and Culverts

Bridge Weight Limits

The Engineering Department is responsible for posting bridges that cannot support legal highway loads. For information on load posted bridges, please contact staff at (970) 498-5739 or send an email. 
 

Additional information about Colorado legal vehicle dimensions and weight limits.