Del Norte County Bridge Report Card

Del Norte 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

Del Norte County, California

Del Norte County has 97 bridges in the National Bridge Inventory, with 9 rated poor and 8 rated scour-critical. Its poor-condition share of 9.3% is above the 4.9% statewide average. Poor-condition bridges carry about 205 daily vehicle crossings.

97Total Bridges

9Poor (9.3%)

42Fair (43.3%)

8Scour-Critical

Quote-Ready Local Facts

9.3%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

205daily vehicle crossings are on poor-condition bridges in the county.

8bridges are rated scour-critical, or 8.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Del Norte County a Bridge Condition Exposure Score of 64/100 (D). The county has 97 bridges in the National Bridge Inventory, including 9 in poor condition and 8 rated scour-critical. Poor-condition bridges carry about 205 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	9.3%	18.6
Poor-condition traffic exposure	25	0.1% of measured traffic	0.1
Scour-critical bridge share	20	8.2%	16.5
Average age vs national baseline	10	50 years vs 48 nationally	0.8
Traffic-data completeness	5	203,385 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	9.3%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	8.2%
Average Bridge Age	50 years
Poor-Condition Traffic Exposure	205 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeNo Data Entered over No Data Entered — 50 vehicles/day Oldest Listed BridgeU.s. Highway 199 over Middle Fork Smith River — built in 1925 All County BridgesBrowse every bridge record in Del Norte County.

Top Bridges to Watch in Del Norte County

Bridge	Reason	Condition	Daily Traffic	Year Built
Rock Creek Road over East Fork Mill Creek	Poor condition + traffic exposure	Poor	10	1950
West Branch Road over West Branch Mill Creek	Poor condition + traffic exposure	Poor	10	1950
Childs Hill Road over East Fork Mill Creek	Poor condition + traffic exposure	Poor	10	1950
No Data Entered over Griffin Creek	Poor condition + traffic exposure	Poor	50	1978
No Data Entered over No Data Entered	Poor condition + traffic exposure	Poor	50	1981
Hamilton Road over West Branch Mill Creek	Poor condition + traffic exposure	Poor	25	1950
Chapman Street over Hoppow Creek	Poor condition + traffic exposure	Poor	20	1965
Old Gasquet Toll over Eighteen Mile Creek	Poor condition + traffic exposure	Poor	20	1970
Childs Hill Road over Rock Creek	Poor condition + traffic exposure	Poor	10	1950
U.s. Highway 101 over Smith Riv South Bank RD	Scour-critical foundation rating	Fair	6,500	1940

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.