Kitsap County Bridge Report Card
Kitsap County scores 84 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Kitsap County, Washington
Kitsap County has 120 bridges in the National Bridge Inventory, with 1 rated poor and 8 rated scour-critical. Its poor-condition share of 0.8% is at or below the 5.6% statewide average. Poor-condition bridges carry about 18,159 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Kitsap County a Bridge Condition Exposure Score of 84/100 (B). The county has 120 bridges in the National Bridge Inventory, including 1 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 18,159 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 | 0.8% | 1.7 |
| Poor-condition traffic exposure | 25 | 1.3% of measured traffic | 1.0 |
| Scour-critical bridge share | 20 | 6.7% | 13.3 |
| Average age vs national baseline | 10 | 35 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 1,361,303 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 | 0.8% |
| State Poor-Condition Share | 5.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 6.7% |
| Average Bridge Age | 35 years |
| Poor-Condition Traffic Exposure | 18,159 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Kitsap County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| SR 104 East Half over Hood Canal | Poor condition + traffic exposure | Poor | 18,159 | 2009 |
| SR 303 over Port Washington Narrows | Scour-critical foundation rating | Fair | 21,462 | 1958 |
| SR 104 over Apple Tree Cove | Scour-critical foundation rating | Fair | 10,000 | 1986 |
| SR 305 over Puget Sound @ Eagle Hrbr | Scour-critical foundation rating | Fair | 9,000 | 1972 |
| Sr104 over Apple Tree Cove | Scour-critical foundation rating | Fair | 3,866 | 1952 |
| SR 160 over Puget Sound @ Southworth | Scour-critical foundation rating | Good | 3,681 | 2003 |
| SR 304 over Sinclair Inlet | Scour-critical foundation rating | Fair | 3,600 | 1990 |
| SR 305 over Puget Sound @ Eagle Hrbr | Scour-critical foundation rating | Fair | 3,052 | 2006 |
| SR 304 over Sinclair Inlet | Scour-critical foundation rating | Fair | 560 | 1961 |
| SR 303 over Callahan Drive | High traffic | Good | 40,390 | 1958 |
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.