Wahkiakum County Bridge Report Card

Wahkiakum County scores 72 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C72 / 100

Local infrastructure snapshot

Wahkiakum County, Washington

Wahkiakum County has 37 bridges in the National Bridge Inventory, with 1 rated poor and 3 rated scour-critical. Its poor-condition share of 2.7% is at or below the 5.6% statewide average. Poor-condition bridges carry about 1,152 daily vehicle crossings.

37Total Bridges

1Poor (2.7%)

16Fair (43.2%)

3Scour-Critical

Quote-Ready Local Facts

2.7%of county bridges are in poor condition, compared with 5.6% statewide and 6.7% nationally.

1,152daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 8.1% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Wahkiakum County a Bridge Condition Exposure Score of 72/100 (C). The county has 37 bridges in the National Bridge Inventory, including 1 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 1,152 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	2.7%	5.4
Poor-condition traffic exposure	25	4.6% of measured traffic	3.5
Scour-critical bridge share	20	8.1%	16.2
Average age vs national baseline	10	55 years vs 48 nationally	2.9
Traffic-data completeness	5	24,884 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	2.7%
State Poor-Condition Share	5.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.1%
Average Bridge Age	55 years
Poor-Condition Traffic Exposure	1,152 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 4 over Hull Creek — 1,152 vehicles/day Oldest Listed BridgeSR 4 over Hull Creek — built in 1934 All County BridgesBrowse every bridge record in Wahkiakum County.

Top Bridges to Watch in Wahkiakum County

Bridge	Reason	Condition	Daily Traffic	Year Built
SR 4 over Hull Creek	Poor condition + traffic exposure	Poor	1,152	1934
Elochoman Vly RD over Elochoman River	Scour-critical foundation rating	Good	726	1963
Covered Bridge RD over Grays River	Scour-critical foundation rating	Good	361	1989
Steamboat Sl Road over Brooks Slough	Scour-critical foundation rating	Fair	187	1959
SR 4 over Elochoman River	High traffic	Fair	2,084	1955
SR 4 over Tide Gate Culvert	High traffic	Good	2,084	2015
SR 409 over Columbia R Puget Island	High traffic	Fair	1,973	1938
SR 4 over Skamokawa Creek	High traffic	Fair	1,573	1939
SR 4 over Deep River	High traffic	Good	1,509	1990
SR 4 over Rangila Slough	High traffic	Good	1,509	1990

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.