Kootenai County Bridge Report Card
Kootenai County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Kootenai County, Idaho
Kootenai County has 159 bridges in the National Bridge Inventory, with 7 rated poor and 6 rated scour-critical. Its poor-condition share of 4.4% is at or below the 5.4% statewide average. Poor-condition bridges carry about 36,510 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Kootenai County a Bridge Condition Exposure Score of 82/100 (B). The county has 159 bridges in the National Bridge Inventory, including 7 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 36,510 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 | 4.4% | 8.8 |
| Poor-condition traffic exposure | 25 | 2.5% of measured traffic | 1.8 |
| Scour-critical bridge share | 20 | 3.8% | 7.5 |
| Average age vs national baseline | 10 | 40 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 1,485,912 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 | 4.4% |
| State Poor-Condition Share | 5.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 3.8% |
| Average Bridge Age | 40 years |
| Poor-Condition Traffic Exposure | 36,510 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Kootenai County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Stc 1699;canyon RD over Coeur Dalene River | Poor condition + traffic exposure | Poor | 680 | 1936 |
| S Anderson Lake RD over Cda River;springston Br | Poor condition + traffic exposure | Poor | 40 | 1955 |
| I 90 Wbl over Pedestrian/bike Path | Poor condition + traffic exposure | Poor | 31,250 | 1971 |
| Bunco Road over Bunco Rd; US 95 Ic | Poor condition + traffic exposure | Poor | 3,800 | 2012 |
| Stc5751;old HWY 95 over Sirr & Uprr;s.athol Op | Poor condition + traffic exposure | Poor | 540 | 1929 |
| E Frontage Road over Wolf Lodge Creek | Poor condition + traffic exposure | Poor | 150 | 1934 |
| Fs Route N0. 413 over N.f. Cda River | Poor condition + traffic exposure | Poor | 50 | 1950 |
| I 90 Ebl over Coeur Dalene River | Scour-critical foundation rating | Fair | 7,000 | 1964 |
| I 90 Wbl over Coeur Dalene River | Scour-critical foundation rating | Fair | 7,000 | 1964 |
| Stc 5725;latour CR over Latour Creek;sw.cataldo | Scour-critical foundation rating | Fair | 90 | 1978 |
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.