San Diego County Bridge Report Card

San Diego County scores 93 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

A93 / 100

Local infrastructure snapshot

San Diego County, California

San Diego County has 1,632 bridges in the National Bridge Inventory, with 39 rated poor and 3 rated scour-critical. Its poor-condition share of 2.4% is at or below the 4.9% statewide average. Poor-condition bridges carry about 1,475,730 daily vehicle crossings.

1,632Total Bridges

39Poor (2.4%)

724Fair (44.4%)

3Scour-Critical

Quote-Ready Local Facts

2.4%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

1,475,730daily vehicle crossings are on poor-condition bridges in the county.

3bridges are rated scour-critical, or 0.2% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives San Diego County a Bridge Condition Exposure Score of 93/100 (A). The county has 1,632 bridges in the National Bridge Inventory, including 39 in poor condition and 3 rated scour-critical. Poor-condition bridges carry about 1,475,730 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	2.4%	4.8
Poor-condition traffic exposure	25	2.6% of measured traffic	2.0
Scour-critical bridge share	20	0.2%	0.4
Average age vs national baseline	10	48 years vs 48 nationally	0.2
Traffic-data completeness	5	56,055,495 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	2.4%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	0.2%
Average Bridge Age	48 years
Poor-Condition Traffic Exposure	1,475,730 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeInterstate 805 over Telegraph Canyon Drain — 250,000 vehicles/day Oldest Listed BridgeInterstate 805 over San Ysidro Ditch — built in 1900 All County BridgesBrowse every bridge record in San Diego County.

Top Bridges to Watch in San Diego County

Bridge	Reason	Condition	Daily Traffic	Year Built
Camino Del Mar over San Dieguito River	Poor condition + traffic exposure	Poor	14,027	1932
Interstate 805 over Telegraph Canyon Drain	Poor condition + traffic exposure	Poor	250,000	1971
Interstate 5 over RTE 163 Connectors	Poor condition + traffic exposure	Poor	199,000	1961
Interstate 5 over De Anza Off-ramp	Poor condition + traffic exposure	Poor	101,500	1954
Interstate 5 over Batiquitos Lagoon	Poor condition + traffic exposure	Poor	98,500	1965
Interstate 5 over Batiquitos Lagoon	Poor condition + traffic exposure	Poor	98,500	1965
Interstate 5 SB over Nctd Bnsf & Amtrak Scrra	Poor condition + traffic exposure	Poor	96,000	1967
Interstate 5 NB over San Luis Rey River	Poor condition + traffic exposure	Poor	78,500	1970
E&w54-n805 Connect over Euclid Avenue	Poor condition + traffic exposure	Poor	62,000	1974
State Route 94 EB over Bancroft Drive	Poor condition + traffic exposure	Poor	51,000	1966

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.