Inyo County Bridge Report Card

Inyo 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

Inyo County, California

Inyo County has 69 bridges in the National Bridge Inventory, with 2 rated poor and 1 rated scour-critical. Its poor-condition share of 2.9% is at or below the 4.9% statewide average. Poor-condition bridges carry about 100 daily vehicle crossings.

69Total Bridges

2Poor (2.9%)

21Fair (30.4%)

1Scour-Critical

Quote-Ready Local Facts

2.9%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

100daily vehicle crossings are on poor-condition bridges in the county.

1bridges are rated scour-critical, or 1.4% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Inyo County a Bridge Condition Exposure Score of 90/100 (A). The county has 69 bridges in the National Bridge Inventory, including 2 in poor condition and 1 rated scour-critical. Poor-condition bridges carry about 100 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	2.9%	5.8
Poor-condition traffic exposure	25	0.0% of measured traffic	0.0
Scour-critical bridge share	20	1.4%	2.9
Average age vs national baseline	10	52 years vs 48 nationally	1.6
Traffic-data completeness	5	228,846 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	2.9%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	1.4%
Average Bridge Age	52 years
Poor-Condition Traffic Exposure	100 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeBell Access RD over Oak Creek — 50 vehicles/day Oldest Listed BridgeMazourka Cyn RD over Los Angeles Aqueduct — built in 1919 All County BridgesBrowse every bridge record in Inyo County.

Top Bridges to Watch in Inyo County

Bridge	Reason	Condition	Daily Traffic	Year Built
Cottonwood Gates over Los Angeles Aqueduct	Poor condition + traffic exposure	Poor	50	1927
Bell Access RD over Oak Creek	Poor condition + traffic exposure	Poor	50	1940
Mazourka Cyn RD over Los Angeles Aqueduct	Scour-critical foundation rating	Good	204	1919
U.s. Highway 395 over North Fork Bishop Creek	High traffic	Fair	21,550	1971
U.s. Highway 395 over Bishop Crk Overflow Chnl	High traffic	Good	21,550	1985
U.s. Highway 395 over Lower Rock Creek	High traffic	Good	15,000	1975
US Highway 395 over Big Pine Creek	High traffic	Good	13,500	1993
US Highway 395 over Los Angeles Aqueduct	High traffic	Good	12,600	1928
State Route 168 over Owens River	High traffic	Good	8,820	1974
State Route 168 over North Fork Bishop Creek	High traffic	Fair	8,000	1982

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.