Skamania County Bridge Report Card

Skamania County scores 64 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D64 / 100

Local infrastructure snapshot

Skamania County, Washington

Skamania County has 120 bridges in the National Bridge Inventory, with 11 rated poor and 4 rated scour-critical. Its poor-condition share of 9.2% is above the 5.6% statewide average. Poor-condition bridges carry about 10,658 daily vehicle crossings.

120Total Bridges

11Poor (9.2%)

54Fair (45.0%)

4Scour-Critical

Quote-Ready Local Facts

9.2%of county bridges are in poor condition, compared with 5.6% statewide and 6.7% nationally.

10,658daily vehicle crossings are on poor-condition bridges in the county.

4bridges are rated scour-critical, or 3.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Skamania County a Bridge Condition Exposure Score of 64/100 (D). The county has 120 bridges in the National Bridge Inventory, including 11 in poor condition and 4 rated scour-critical. Poor-condition bridges carry about 10,658 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	9.2%	18.3
Poor-condition traffic exposure	25	12.9% of measured traffic	9.7
Scour-critical bridge share	20	3.3%	6.7
Average age vs national baseline	10	52 years vs 48 nationally	1.6
Traffic-data completeness	5	82,811 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	9.2%
State Poor-Condition Share	5.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.3%
Average Bridge Age	52 years
Poor-Condition Traffic Exposure	10,658 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 14 over Half Bridge — 4,879 vehicles/day Oldest Listed BridgeCascade AVE Ext. over Kanaka Creek — built in 1920 All County BridgesBrowse every bridge record in Skamania County.

Top Bridges to Watch in Skamania County

Bridge	Reason	Condition	Daily Traffic	Year Built
SR 14 over Half Bridge	Poor condition + traffic exposure	Poor	4,879	1930
SR 14 over Hamilton Creek	Poor condition + traffic exposure	Poor	4,524	1978
No Data Entered over Swift Creek	Poor condition + traffic exposure	Poor	650	1957
Skamania Landing R over Butler Slough	Poor condition + traffic exposure	Poor	209	1948
No Data Entered over Dry Creek	Poor condition + traffic exposure	Poor	118	1962
No Data Entered over Lost Creek	Poor condition + traffic exposure	Poor	118	1962
No Data Entered over Lost Creek Ditch	Poor condition + traffic exposure	Poor	50	1983
No Data Entered over Lost Creek Ditch	Poor condition + traffic exposure	Poor	50	1986
No Data Entered over Lost Creek	Poor condition + traffic exposure	Poor	30	1955
No Data Entered over Trout Creek 2	Poor condition + traffic exposure	Poor	20	1985

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.