Skagit County Bridge Report Card

Skagit County scores 84 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B84 / 100

Local infrastructure snapshot

Skagit County, Washington

Skagit County has 256 bridges in the National Bridge Inventory, with 6 rated poor and 10 rated scour-critical. Its poor-condition share of 2.3% is at or below the 5.6% statewide average. Poor-condition bridges carry about 25,858 daily vehicle crossings.

256Total Bridges

6Poor (2.3%)

149Fair (58.2%)

10Scour-Critical

Quote-Ready Local Facts

2.3%of county bridges are in poor condition, compared with 5.6% statewide and 6.7% nationally.

25,858daily vehicle crossings are on poor-condition bridges in the county.

10bridges are rated scour-critical, or 3.9% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Skagit County a Bridge Condition Exposure Score of 84/100 (B). The county has 256 bridges in the National Bridge Inventory, including 6 in poor condition and 10 rated scour-critical. Poor-condition bridges carry about 25,858 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	2.3%	4.7
Poor-condition traffic exposure	25	1.6% of measured traffic	1.2
Scour-critical bridge share	20	3.9%	7.8
Average age vs national baseline	10	53 years vs 48 nationally	2.2
Traffic-data completeness	5	1,569,618 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	2.3%
State Poor-Condition Share	5.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.9%
Average Bridge Age	53 years
Poor-Condition Traffic Exposure	25,858 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 9 over Skagit River — 11,660 vehicles/day Oldest Listed BridgeSR 9 over Thunder Creek — built in 1900 All County BridgesBrowse every bridge record in Skagit County.

Top Bridges to Watch in Skagit County

Bridge	Reason	Condition	Daily Traffic	Year Built
SR 20 over Baker River	Poor condition + traffic exposure	Poor	5,032	1972
SR 20 over Ship Hbr/guemes Channel	Poor condition + traffic exposure	Poor	3,227	1959
SR 9 over Skagit River	Poor condition + traffic exposure	Poor	11,660	1959
Old HWY 99 North over Thomas Creek	Poor condition + traffic exposure	Poor	5,234	1934
F&s Grade Road over Samish River	Poor condition + traffic exposure	Poor	630	1974
Scott Paper Co RD over SR 20	Poor condition + traffic exposure	Poor	75	1967
SR 9 over W Fk Nookachamps Creek	Scour-critical foundation rating	Good	4,825	1952
SR 20 over Ship Hbr/guemes Channel	Scour-critical foundation rating	Fair	3,227	1971
SR 20 over Rocky Creek	Scour-critical foundation rating	Fair	2,492	1947
SR 20 over Diobsud Creek	Scour-critical foundation rating	Good	1,930	1950

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.