Clark County Bridge Report Card

Clark County scores 73 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

C73 / 100

Local infrastructure snapshot

Clark County, Washington

Clark County has 219 bridges in the National Bridge Inventory, with 10 rated poor and 17 rated scour-critical. Its poor-condition share of 4.6% is at or below the 5.6% statewide average. Poor-condition bridges carry about 112,935 daily vehicle crossings.

219Total Bridges

10Poor (4.6%)

91Fair (41.6%)

17Scour-Critical

Quote-Ready Local Facts

4.6%of county bridges are in poor condition, compared with 5.6% statewide and 6.7% nationally.

112,935daily vehicle crossings are on poor-condition bridges in the county.

17bridges are rated scour-critical, or 7.8% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Clark County a Bridge Condition Exposure Score of 73/100 (C). The county has 219 bridges in the National Bridge Inventory, including 10 in poor condition and 17 rated scour-critical. Poor-condition bridges carry about 112,935 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	4.6%	9.1
Poor-condition traffic exposure	25	3.8% of measured traffic	2.8
Scour-critical bridge share	20	7.8%	15.5
Average age vs national baseline	10	47 years vs 48 nationally	0.0
Traffic-data completeness	5	2,983,157 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	7.8%
Average Bridge Age	47 years
Poor-Condition Traffic Exposure	112,935 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeI-5 over E Fork Lewis River — 41,939 vehicles/day Oldest Listed BridgeSR 500 over Hjf Canal — built in 1915 All County BridgesBrowse every bridge record in Clark County.

Top Bridges to Watch in Clark County

Bridge	Reason	Condition	Daily Traffic	Year Built
I-5 over E Fork Lewis River	Poor condition + traffic exposure	Poor	41,939	1939
SR 500 over Lacamas Lake	Poor condition + traffic exposure	Poor	11,155	1930
SR 503 over N Branch Chelatchie CR	Poor condition + traffic exposure	Poor	838	1953
I-5 over Lewis River	Poor condition + traffic exposure	Poor	41,939	1940
SR 500 over Hjf Canal	Poor condition + traffic exposure	Poor	7,516	1915
SR 14 over Bn Rr	Poor condition + traffic exposure	Poor	6,000	1972
172nd AVE over China Ditch	Poor condition + traffic exposure	Poor	1,790	2009
SR 503 over Lewis River	Poor condition + traffic exposure	Poor	1,239	1932
Cc Landon Road over Yacolt Creek	Poor condition + traffic exposure	Poor	312	1955
No Data Entered over Canyon Creek	Poor condition + traffic exposure	Poor	207	1948

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.