San Bernardino County Bridge Report Card

San Bernardino County scores 82 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

B82 / 100

Local infrastructure snapshot

San Bernardino County, California

San Bernardino County has 1,422 bridges in the National Bridge Inventory, with 62 rated poor and 53 rated scour-critical. Its poor-condition share of 4.4% is at or below the 4.9% statewide average. Poor-condition bridges carry about 402,517 daily vehicle crossings.

1,422Total Bridges

62Poor (4.4%)

713Fair (50.1%)

53Scour-Critical

Quote-Ready Local Facts

4.4%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

402,517daily vehicle crossings are on poor-condition bridges in the county.

53bridges are rated scour-critical, or 3.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives San Bernardino County a Bridge Condition Exposure Score of 82/100 (B). The county has 1,422 bridges in the National Bridge Inventory, including 62 in poor condition and 53 rated scour-critical. Poor-condition bridges carry about 402,517 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	4.4%	8.7
Poor-condition traffic exposure	25	1.0% of measured traffic	0.8
Scour-critical bridge share	20	3.7%	7.5
Average age vs national baseline	10	51 years vs 48 nationally	1.2
Traffic-data completeness	5	39,543,933 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	4.4%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	3.7%
Average Bridge Age	51 years
Poor-Condition Traffic Exposure	402,517 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeCentral AVE over Up Rr Amtrak Metrolink — 39,900 vehicles/day Oldest Listed BridgeNat Trails HWY over Workman Wash — built in 1890 All County BridgesBrowse every bridge record in San Bernardino County.

Top Bridges to Watch in San Bernardino County

Bridge	Reason	Condition	Daily Traffic	Year Built
Interstate 15 SB over Wheaton Wash	Poor condition + traffic exposure	Poor	18,500	1963
Interstate 40 over Hacienda Wash	Poor condition + traffic exposure	Poor	10,150	1971
Interstate 40 WB over Willow Springs Wash	Poor condition + traffic exposure	Poor	8,500	1972
Interstate 40 over Blind Hills Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 over Blind Hills Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 over Black Cyn Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 over Black Cyn Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 over Newton Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 EB over Newton Wash	Poor condition + traffic exposure	Poor	7,500	1970
Interstate 40 over Mcginley Wash	Poor condition + traffic exposure	Poor	7,500	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.