Broomfield County Bridge Report Card
Broomfield County scores 95 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Broomfield County, Colorado
Broomfield County has 60 bridges in the National Bridge Inventory, with 1 rated poor and 0 rated scour-critical. Its poor-condition share of 1.7% is at or below the 4.6% statewide average. Poor-condition bridges carry about 25,000 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Broomfield County a Bridge Condition Exposure Score of 95/100 (A). The county has 60 bridges in the National Bridge Inventory, including 1 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 25,000 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 1.7% | 3.3 |
| Poor-condition traffic exposure | 25 | 2.7% of measured traffic | 2.0 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 26 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 940,138 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 1.7% |
| State Poor-Condition Share | 4.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 26 years |
| Poor-Condition Traffic Exposure | 25,000 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Broomfield County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| SH 121 Ml Sbnd over US 287 Ml Rr Spur | Poor condition + traffic exposure | Poor | 25,000 | 1972 |
| US 36 Ml over Ramp B & Bikepath | High traffic | Good | 68,000 | 2001 |
| US 36 Ml over Rock Creek | High traffic | Good | 68,000 | 2015 |
| US 36 Ml over Flat Iron Circle East | High traffic | Good | 62,000 | 1999 |
| I 25 Ml Nbnd over Nwp | High traffic | Good | 54,000 | 2002 |
| SB I-25 over Nwp/e470 | High traffic | Good | 54,000 | 2003 |
| I 25 Ml Nbnd over County Road 6 | High traffic | Good | 54,000 | 2004 |
| I25 Ml Sbnd over Weld County Road 6 | High traffic | Good | 54,000 | 2004 |
| SH 121 Ml over US 36 Ml | High traffic | Good | 39,000 | 2014 |
| US 287 Ml over Flood Control Ditch | High traffic | Fair | 29,000 | 1965 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.