Pierce County Bridge Report Card
Pierce County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Pierce County, Washington
Pierce County has 480 bridges in the National Bridge Inventory, with 22 rated poor and 14 rated scour-critical. Its poor-condition share of 4.6% is at or below the 5.6% statewide average. Poor-condition bridges carry about 206,993 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Pierce County a Bridge Condition Exposure Score of 82/100 (B). The county has 480 bridges in the National Bridge Inventory, including 22 in poor condition and 14 rated scour-critical. Poor-condition bridges carry about 206,993 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 | 4.6% | 9.2 |
| Poor-condition traffic exposure | 25 | 2.6% of measured traffic | 2.0 |
| Scour-critical bridge share | 20 | 2.9% | 5.8 |
| Average age vs national baseline | 10 | 51 years vs 48 nationally | 1.1 |
| Traffic-data completeness | 5 | 7,895,959 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 | 4.6% |
| State Poor-Condition Share | 5.6% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 2.9% |
| Average Bridge Age | 51 years |
| Poor-Condition Traffic Exposure | 206,993 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Pierce County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Sunrise Road over Fryingpan Creek | Poor condition + traffic exposure | Poor | 1,786 | 1931 |
| C Street over Clover Creek | Poor condition + traffic exposure | Poor | 1 | 1960 |
| SR 99 (54th AVE E) over I-5 Ramps | Poor condition + traffic exposure | Poor | 29,145 | 1961 |
| SR 167 over Bnsf Rr | Poor condition + traffic exposure | Poor | 28,316 | 1934 |
| Gravelly Lake DR over Bnrr (np) | Poor condition + traffic exposure | Poor | 27,805 | 1959 |
| SR 302 over Henderson Bay | Poor condition + traffic exposure | Poor | 23,753 | 1936 |
| Portland AVE over Puyallup AVE Nprr | Poor condition + traffic exposure | Poor | 19,549 | 1973 |
| Fish War Mem X-ing over Railroad | Poor condition + traffic exposure | Poor | 15,256 | 1925 |
| Fish War Mem X-ing over Puyallup River | Poor condition + traffic exposure | Poor | 15,255 | 1925 |
| Steilacoom Dupont over I-5 | Poor condition + traffic exposure | Poor | 11,876 | 1957 |
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.