Lyon County Bridge Report Card

Lyon County scores 66 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D66 / 100

Local infrastructure snapshot

Lyon County, Nevada

Lyon County has 54 bridges in the National Bridge Inventory, with 4 rated poor and 5 rated scour-critical. Its poor-condition share of 7.4% is above the 1.0% statewide average. Poor-condition bridges carry about 557 daily vehicle crossings.

54Total Bridges

4Poor (7.4%)

19Fair (35.2%)

5Scour-Critical

Quote-Ready Local Facts

7.4%of county bridges are in poor condition, compared with 1.0% statewide and 6.7% nationally.

557daily vehicle crossings are on poor-condition bridges in the county.

5bridges are rated scour-critical, or 9.3% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Lyon County a Bridge Condition Exposure Score of 66/100 (D). The county has 54 bridges in the National Bridge Inventory, including 4 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 557 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	7.4%	14.8
Poor-condition traffic exposure	25	0.3% of measured traffic	0.2
Scour-critical bridge share	20	9.3%	18.5
Average age vs national baseline	10	50 years vs 48 nationally	0.8
Traffic-data completeness	5	217,403 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	7.4%
State Poor-Condition Share	1.0%
National Poor-Condition Share	6.7%
County Scour-Critical Share	9.3%
Average Bridge Age	50 years
Poor-Condition Traffic Exposure	557 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeRural Road over Truckee-carson Canal — 274 vehicles/day Oldest Listed BridgeLux LN over Walker Rvr — built in 1900 All County BridgesBrowse every bridge record in Lyon County.

Top Bridges to Watch in Lyon County

Bridge	Reason	Condition	Daily Traffic	Year Built
Old SR 3c E. Wk.r over East Fork Walker Rvr	Poor condition + traffic exposure	Poor	85	1970
Rural Road over Truckee-carson Canal	Poor condition + traffic exposure	Poor	274	1955
Shady Av over Gold Canyon Crk	Poor condition + traffic exposure	Poor	128	1945
Old SR 3c over East Walker River	Poor condition + traffic exposure	Poor	70	1976
US 95a over Carson Rvr	Scour-critical foundation rating	Fair	2,900	1987
SR 208 Topaz RD over W Walker Rvr Wilson C	Scour-critical foundation rating	Fair	1,500	1959
Snyder LN over Walker Rvr	Scour-critical foundation rating	Good	121	1984
Lux LN over Walker Rvr	Scour-critical foundation rating	Fair	61	1900
US 95a over Uprr	High traffic	Good	29,500	2006
US 50 over Ditch	High traffic	Good	18,600	2012

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.