Humboldt County Bridge Report Card

Humboldt County scores 90 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A90 / 100

Local infrastructure snapshot

Humboldt County, Nevada

Humboldt County has 54 bridges in the National Bridge Inventory, with 1 rated poor and 1 rated scour-critical. Its poor-condition share of 1.9% is above the 1.0% statewide average. Poor-condition bridges carry about 55 daily vehicle crossings.

54Total Bridges

1Poor (1.9%)

34Fair (63.0%)

1Scour-Critical

Quote-Ready Local Facts

1.9%of county bridges are in poor condition, compared with 1.0% statewide and 6.7% nationally.

55daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 1.9% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Humboldt County a Bridge Condition Exposure Score of 90/100 (A). The county has 54 bridges in the National Bridge Inventory, including 1 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 55 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	1.9%	3.7
Poor-condition traffic exposure	25	0.0% of measured traffic	0.0
Scour-critical bridge share	20	1.9%	3.7
Average age vs national baseline	10	55 years vs 48 nationally	2.7
Traffic-data completeness	5	163,578 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	1.9%
State Poor-Condition Share	1.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.9%
Average Bridge Age	55 years
Poor-Condition Traffic Exposure	55 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeIRR Ft Mcdermitt over Quinn Rvr — 55 vehicles/day Oldest Listed BridgeBridge Street over Humboldt River — built in 1910 All County BridgesBrowse every bridge record in Humboldt County.

Top Bridges to Watch in Humboldt County

Bridge	Reason	Condition	Daily Traffic	Year Built
IRR Ft Mcdermitt over Quinn Rvr	Poor condition + traffic exposure	Poor	55	1976
US 95 over Humboldt Rvr	Scour-critical foundation rating	Fair	6,550	1986
SR 787 Hansen ST over Sprr	High traffic	Fair	12,000	1967
Cross Road over I 80	High traffic	Fair	9,000	1970
US 95 over I 80	High traffic	Good	7,050	1976
US 95 over Uprr	High traffic	Fair	6,550	1999
I 80 over Mcnitch RD	High traffic	Fair	5,200	1970
I 80w over Mcnitch RD	High traffic	Fair	5,200	1970
I 80 over Sprr	High traffic	Fair	5,050	1970
I 80 over Sprr	High traffic	Fair	5,050	1970

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.