Orange County, CA

1,224 public highway bridges

Orange County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Orange County, California contains 1,224 public highway bridges. Roughly 35.3% are rated “Good,” 21.2% “Fair,” and 2.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

1,224
Total Bridges
35.3%
Good
21.2%
Fair
2.2%
Poor Condition

Condition Distribution

Good
35.3% (432)
Fair
21.2% (260)
Poor
2.2% (27)

All Bridges (1,224)

STATE ROUTE 55

Good

Over: MACARTHUR STORM CHANNEL

12-ORA-055-R7.06-SA, Orange, CA

Built 1966 Load: 32.4 t ADT: 222,000

INTERSTATE 405

Good

Over: LAGUNA CHANNEL

12-ORA-405-2.03-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 237,000

INTERSTATE 405

Good

Over: SAN JOAQUIN CHANNEL

12-ORA-405-4.24-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 224,000

INTERSTATE 405

Good

Over: SAN JOAQUIN CHANNEL

12-ORA-405-6.13-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 266,000

RAMP/CONNECTOR 405

Good

Over: LANE CHANNEL

12-ORA-405-6.86-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 240,000

S57-ORANGETHORPE

Good

Over: PLACENTIA CHANNEL

12-ORA-057-16.50-PLCN, Orange, CA

Built 1969 Load: 32.4 t ADT: 7,970

STATE ROUTE 1

Good

Over: DOHENY PARK RD

12-ORA-001-R0.78-DAPT, Orange, CA

Built 1976 Load: 32.4 t ADT: 37,000

STATE ROUTE 1

Good

Over: BNSF RY,AMTRAK,METROLINK

12-ORA-001-R0.86-DAPT, Orange, CA

Built 1976 Load: 32.4 t ADT: 37,000

DOHENY-N1 ON RAMP

Good

Over: BNSF RY,AMTRAK,METROLINK

12-ORA-001-R0.85-DAPT, Orange, CA

Built 1976 Load: 32.4 t ADT: 3,000

STATE ROUTE 1

Good

Over: SAN JUAN CREEK

12-ORA-001-R0.97-DAPT, Orange, CA

Built 1976 Load: 32.4 t ADT: 37,000

57 SB ON RAMP

Good

Over: BREA CANYON CHANNEL

12-ORA-057-22.30, Orange, CA

Built 1971 Load: 32.4 t ADT: 2,260

STATE ROUTE 91

Good

Over: ROADSIDE DITCH DRAIN 'A'

12-ORA-091-R10.50-ANA, Orange, CA

Built 1970 Load: 32.4 t ADT: 300,000

STATE ROUTE 91

Good

Over: ROADSIDE DRAIN 'B'

12-ORA-091-R11.79-ANA, Orange, CA

Built 1970 Load: 32.4 t ADT: 192,000

STATE ROUTE 91

Good

Over: ROADSIDE DRAIN 'C'

12-ORA-091-R12.20-ANA, Orange, CA

Built 1970 Load: 32.4 t ADT: 152,000

STATE ROUTE 91

Good

Over: GYPSUM CANYON CREEK

12-ORA-091-R16.46-ANA, Orange, CA

Built 1971 Load: 32.4 t ADT: 290,000

STATE ROUTE 91

Good

Over: COAL CANYON CREEK

12-ORA-091-R17.92R-ANA, Orange, CA

Built 1971 Load: 32.4 t ADT: 145,000

RTE 57 & CHAPMAN

Good

Over: BITTERBUSH CHANNEL

12-ORA-057-11.20-ORA, Orange, CA

Built 1976 Load: 32.4 t ADT: 229,000

INTERSTATE 5

Good

Over: EL MODENA-IRVINE CHANNEL

12-ORA-005-27.82-TUS, Orange, CA

Built 1992 Load: 32.4 t ADT: 300,000

INTERSTATE 5

Good

Over: PETERS CANYON

12-ORA-005-R27.25-IRVN, Orange, CA

Built 1992 Load: 32.4 t ADT: 279,000

BRDWY NB OFF-RP

Good

Over: PARKING LOT

12-ORA-005-33.29-SA, Orange, CA

Built 1996 Load: 32.4 t ADT: 7,800

ALTON PKWY-N241 ON

Good

Over: TOWNE CENTRE DR

12-ORA-241-23.62-LKFR, Orange, CA

Built 1993 Load: 32.4 t ADT: 2,610

STATE ROUTE 241

Good

Over: AQUA CHINON WASH

12-ORA-241-24.67-IRVN, Orange, CA

Built 1993 Load: 32.4 t ADT: 43,000

SR 241

Good

Over: Tijeras Creek

12-ORA-241-17.40-RSM, Orange, CA

Built 1998 Load: 32.4 t ADT: 1,000

SR 241

Good

Over: Tijeras Creek

12-ORA-241-17.40-RSM, Orange, CA

Built 1998 Load: 32.4 t ADT: 4,050

SR 241

Good

Over: Tijeras Creek

12-ORA-241-17.40-RSM, Orange, CA

Built 1998 Load: 32.4 t ADT: 4,050

S73-MACARTHUR OFF

Good

Over: BONITA CREEK

12-ORA-073-23.78-IRVN, Orange, CA

Built 1996 Load: 32.4 t ADT: 6,270

INTERSTATE 5

Good

Over: TUSTIN CHANNEL

12-ORA-005-30.60-TUS, Orange, CA

Built 1995 Load: 32.4 t ADT: 300,000

SR 73 SB

Good

Over: ALISO CREEK

12-ORA-073-13.82-LGNG, Orange, CA

Built 1996 Load: 32.4 t ADT: 25,000

SR 73 NB

Good

Over: ALISO CREEK

12-ORA-073-13.82-LGNG, Orange, CA

Built 1996 Load: 32.4 t ADT: 25,000

SR 73 SB

Good

Over: SAND CANYON AVE (FUTURE)

12-ORA-073-19.50-LGNB, Orange, CA

Built 1996 Load: 32.4 t ADT: 34,500

SR 73 NB

Good

Over: SAND CANYON AVE (FUTURE)

12-ORA-073-19.50-LGNB, Orange, CA

Built 1996 Load: 32.4 t ADT: 34,500

N133-S241 CONNECTR

Good

Over: SANTIAGO AQUEDUCT

12-ORA-133-12.38, Orange, CA

Built 1998 Load: 32.4 t ADT: 14,288

SR 241 NB

Good

Over: WILDLIFE UC

12-ORA-241-35.60-ANA, Orange, CA

Built 1998 Load: 32.4 t ADT: 20,500

SR 241 NB

Good

Over: SANTIAGO CREEK

12-ORA-241-33.70-RSM, Orange, CA

Built 1998 Load: 32.4 t ADT: 20,500

KATELLA-N5 ON-RAMP

Good

Over: DISNEY WAY

12-ORA-005-36.44-ANA, Orange, CA

Built 2000 Load: 32.4 t ADT: 5,668

STATE ROUTE 74

Good

Over: SAN JUAN CREEK

12-ORA-074-R2.28-SJCP, Orange, CA

Built 1995 Load: 32.4 t ADT: 5,500

SR 73 NB

Good

Over: WILDLIFE PATHWAY

12-ORA-073-20.86-LGNB, Orange, CA

Built 1996 Load: 32.4 t ADT: 34,500

SR 241

Good

Over: HAUL ROAD

12-ORA-241-28.70-RSM, Orange, CA

Built 1997 Load: 32.4 t ADT: 36,000

ROUTE 261 SB

Good

Over: UTILITY ROAD

12-ORA-261-4.38-TUS, Orange, CA

Built 1998 Load: 32.4 t ADT: 14,500

ROUTE 261 NB

Good

Over: UTILITY ROAD

12-ORA-261-4.38-TUS, Orange, CA

Built 1998 Load: 32.4 t ADT: 14,500

INTERSTATE 5

Good

Over: CARBON CREEK

12-ORA-005-40.20-ANA, Orange, CA

Built 2002 Load: 32.4 t ADT: 259,800

SR241

Good

Over: WILDLIFE CROSSING

12-ORA-241-27.05-IRVN, Orange, CA

Built 1998 Load: 32.4 t ADT: 48,000

STATE ROUTE 133 SB

Good

Over: LAGUNA LAKES TRAIL

12-ORA-133-R5.62, Orange, CA

Built 2008 Load: 32.4 t ADT: 20,700

STATE ROUTE 133 NB

Good

Over: LAGUNA LAKES TRAIL

12-ORA-133-R5.60, Orange, CA

Built 2008 Load: 32.4 t ADT: 20,700

STATE ROUTE 133 SB

Good

Over: STAGE COACH TRAIL

12-ORA-133-R6.16, Orange, CA

Built 2008 Load: 32.4 t ADT: 20,700

STATE ROUTE 133 NB

Good

Over: STAGE COACH TRAIL

12-ORA-133-R6.16, Orange, CA

Built 2008 Load: 32.4 t ADT: 20,700

N405-BRISTOL OFFRP

Good

Over: AIRPORT CHANNEL

12-ORA-405-8.96-CMS, Orange, CA

Built 2002 Load: 32.4 t ADT: 10,000

I 5 SB

Good

Over: SANTIAGO CREEK

12-ORA-005-33.39-SA, Orange, CA

Built 1996 Load: 32.4 t ADT: 183,000

I 5 NB

Good

Over: SANTIAGO CREEK

12-ORA-005-33.39-SA, Orange, CA

Built 1996 Load: 32.4 t ADT: 183,000

STATE ROUTE 133 SB

Good

Over: LAGUNA CANYON CREEK

12-ORA-133-M4.29, Orange, CA

Built 2008 Load: 32.4 t ADT: 28,500

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.