Jefferson County Bridge Report Card

Jefferson County scores 63 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D63 / 100

Local infrastructure snapshot

Jefferson County, Washington

Jefferson County has 97 bridges in the National Bridge Inventory, with 5 rated poor and 9 rated scour-critical. Its poor-condition share of 5.2% is at or below the 5.6% statewide average. Poor-condition bridges carry about 21,822 daily vehicle crossings.

97Total Bridges

5Poor (5.2%)

34Fair (35.1%)

9Scour-Critical

Quote-Ready Local Facts

5.2%of county bridges are in poor condition, compared with 5.6% statewide and 6.7% nationally.

21,822daily vehicle crossings are on poor-condition bridges in the county.

9bridges are rated scour-critical, or 9.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Jefferson County a Bridge Condition Exposure Score of 63/100 (D). The county has 97 bridges in the National Bridge Inventory, including 5 in poor condition and 9 rated scour-critical. Poor-condition bridges carry about 21,822 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	5.2%	10.3
Poor-condition traffic exposure	25	11.4% of measured traffic	8.5
Scour-critical bridge share	20	9.3%	18.6
Average age vs national baseline	10	44 years vs 48 nationally	0.0
Traffic-data completeness	5	191,791 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	5.2%
State Poor-Condition Share	5.6%
National Poor-Condition Share	6.7%
County Scour-Critical Share	9.3%
Average Bridge Age	44 years
Poor-Condition Traffic Exposure	21,822 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeSR 104 Westhalf over Hood Canal — 18,159 vehicles/day Oldest Listed BridgeSR 19 over Chimacum Creek — built in 1916 All County BridgesBrowse every bridge record in Jefferson County.

Top Bridges to Watch in Jefferson County

Bridge	Reason	Condition	Daily Traffic	Year Built
US 101 over Big Quilcene River	Poor condition + traffic exposure	Poor	3,525	1936
SR 20 over Puget Snd @ Pt Townsend	Poor condition + traffic exposure	Poor	63	1955
SR 104 Westhalf over Hood Canal	Poor condition + traffic exposure	Poor	18,159	1982
Old Tarboo Road over Tarboo Creek	Poor condition + traffic exposure	Poor	50	2005
No Data Entered over Duckabush River	Poor condition + traffic exposure	Poor	25	1960
SR 19 over Chimacum Creek	Scour-critical foundation rating	Fair	8,718	1916
US 101 over Duckabush River	Scour-critical foundation rating	Fair	2,967	1934
US 101 over Little Quilcene River	Scour-critical foundation rating	Fair	2,792	1938
US 101 over Fulton Creek	Scour-critical foundation rating	Fair	2,667	1926
SR 20 over Puget Snd @ Pt Townsend	Scour-critical foundation rating	Good	1,800	2013

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.