Orange County, CA

1,224 public highway bridges

Orange County Bridge Snapshot

Orange County, California contains 1,224 public highway bridges in the FHWA National Bridge Inventory. Roughly 35.3% are rated “Good,” 21.2% “Fair,” 2.2% “Poor,” and 2.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

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

1,224
Total Bridges
35.3%
Good
2.2%
Poor
2.2%
Structurally Deficient

Condition Distribution

Good
35.3% (432)
Fair
21.2% (260)
Poor
2.2% (27)
SD
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 U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial