Cache County Bridge Report Card
Cache County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Cache County, Utah
Cache County has 96 bridges in the National Bridge Inventory, with 7 rated poor and 3 rated scour-critical. Its poor-condition share of 7.3% is above the 3.5% statewide average. Poor-condition bridges carry about 6,190 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Cache County a Bridge Condition Exposure Score of 77/100 (C). The county has 96 bridges in the National Bridge Inventory, including 7 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 6,190 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 | 7.3% | 14.6 |
| Poor-condition traffic exposure | 25 | 1.9% of measured traffic | 1.4 |
| Scour-critical bridge share | 20 | 3.1% | 6.2 |
| Average age vs national baseline | 10 | 50 years vs 48 nationally | 1.0 |
| Traffic-data completeness | 5 | 321,715 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 | 7.3% |
| State Poor-Condition Share | 3.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 3.1% |
| Average Bridge Age | 50 years |
| Poor-Condition Traffic Exposure | 6,190 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Cache County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Logan City Street over Logan River | Poor condition + traffic exposure | Poor | 4,505 | 1983 |
| Sr-61 over Bear River | Poor condition + traffic exposure | Poor | 1,170 | 1961 |
| County Road over Bear River | Poor condition + traffic exposure | Poor | 315 | 1925 |
| Road 20264 over Logan River | Poor condition + traffic exposure | Poor | 50 | 1951 |
| Road 20157 over Lt Hd Fork Blacksmith | Poor condition + traffic exposure | Poor | 50 | 1954 |
| Road 20012 over Logan River | Poor condition + traffic exposure | Poor | 50 | 1968 |
| Road 20024 over Logan River | Poor condition + traffic exposure | Poor | 50 | 1972 |
| Logan City Street over Logan River | Scour-critical foundation rating | Fair | 2,000 | 1953 |
| County Road over Newton Creek | Scour-critical foundation rating | Fair | 504 | 1991 |
| Us-91 (sr-91) over Logan River | High traffic | Fair | 44,297 | 1918 |
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.