Lake and Peninsula County Bridge Report Card
Lake and Peninsula County scores 55 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Lake and Peninsula County, Alaska
Lake and Peninsula County has 10 bridges in the National Bridge Inventory, with 1 rated poor and 6 rated scour-critical. Its poor-condition share of 10.0% is above the 7.5% statewide average. Poor-condition bridges carry about 45 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Lake and Peninsula County a Bridge Condition Exposure Score of 55/100 (F). The county has 10 bridges in the National Bridge Inventory, including 1 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 45 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 | 10.0% | 20.0 |
| Poor-condition traffic exposure | 25 | 6.0% of measured traffic | 4.5 |
| Scour-critical bridge share | 20 | 60.0% | 20.0 |
| Average age vs national baseline | 10 | 38 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 746 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 | 10.0% |
| State Poor-Condition Share | 7.5% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 60.0% |
| Average Bridge Age | 38 years |
| Poor-Condition Traffic Exposure | 45 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Lake and Peninsula County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Irr:anderson RD over Indian Creek | Poor condition + traffic exposure | Poor | 45 | 1985 |
| Irr:airport Road over Perryville Creek | Scour-critical foundation rating | Good | 77 | 1981 |
| Irr:newhalen Road over North Fork Alexcy Creek | Scour-critical foundation rating | Fair | 50 | 1985 |
| Irr:anderson RD over Chignik Creek | Scour-critical foundation rating | Fair | 45 | 2002 |
| Chignik Lagoon over Packers Creek | Scour-critical foundation rating | Fair | 41 | 1986 |
| Williamsport/pile over Timberline Creek | Scour-critical foundation rating | Good | 20 | 1981 |
| Iliamna Village Sp over Iliamnavillagespurrd_roa | High traffic | Good | 275 | 1976 |
| Iliamna Village RD over Iliamnavillagerd_roadhou | High traffic | Good | 143 | 1976 |
| Bay Road over Rushing Creek | High traffic | Fair | 30 | 1985 |
| Williamsport/pile over Iliamna River | High traffic | Good | 20 | 2019 |
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.