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)

Sort:

AVENIDA DE LAS BAN

Over: STATE ROUTE 241

12-ORA-241-18.07-RSM, Orange, CA

Built 2003 ADT: 18,300

STA MARGARITA PKWY

Over: STATE ROUTE 241

12-ORA-241-18.53-RSM, Orange, CA

Built 1995 ADT: 18,300

STATE ROUTE 241 SB

Over: MELINDA ROAD

12-ORA-241-19.33-RSM, Orange, CA

Built 1995 ADT: 5,000

STATE ROUTE 241 NB

Over: MELINDA ROAD

12-ORA-241-19.33-RSM, Orange, CA

Built 1995 ADT: 5,000

LOS ALISOS BLVD

Over: STATE ROUTE 241

12-ORA-241-20.12-RSM, Orange, CA

Built 1995 ADT: 42,000

ROUTE 241

Over: ALISO CREEK & EL TORO RD

12-ORA-241-21.00-MSNV, Orange, CA

Built 1995 ADT: 15,000

ROUTE 241

Over: ALISO CREEK & EL TORO RD

12-ORA-241-21.00-MSNV, Orange, CA

Built 1995 ADT: 15,000

STATE ROUTE 241 SB

Over: PORTOLA PARKWAY

12-ORA-241-21.85-LKFR, Orange, CA

Built 1995 ADT: 15,000

STATE ROUTE 241

Over: LAKE FOREST DRIVE

12-ORA-241-22.50-LKFR, Orange, CA

Built 1993 ADT: 15,000

SR 241

Over: BAKE PARKWAY

12-ORA-241-22.77-LKFR, Orange, CA

Built 1993 ADT: 15,000

ALTON PKWY

Over: STATE ROUTE 241

12-ORA-241-23.46-LKFR, Orange, CA

Built 1993 ADT: 43,000

S241-ALTON PKW OFF

Over: TOWNE CENTRE DR

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

Built 1993 ADT: 5,000

SR 241 SB

Over: TOWNE CENTRE DR

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

Built 1993 ADT: 5,000

PORTOLA PKWY

Over: STATE ROUTE 241

12-ORA-241-25.02-IRVN, Orange, CA

Built 1996 ADT: 48,000

STATE ROUTE 91 EB

Over: W91-S55 CONNECTOR

12-ORA-091-R9.17-ANA, Orange, CA

Built 1994 ADT: 69,600

91-55 FASTTRACK

Over: W91-S55 CONNECTORS

12-ORA-091-R9.91-ANA, Orange, CA

Built 1994 ADT: 69,600

N5-N73 CONNECTOR

Over: I 5; C. C.; METRO RAIL

12-ORA-005-12.51-LGNG, Orange, CA

Built 1996 ADT: 5,000

S73-S5 CONNECTOR

Over: CAMINO CAPISTRANO,METRO

12-ORA-073-10.34-SJCP, Orange, CA

Built 1996 ADT: 10,000

S73-GLENWOOD OFF

Over: EL TORO RD-S73 ON RAMP

12-ORA-073-15.80, Orange, CA

Built 2003 ADT: 5,000

SR 73 SB

Over: EL TORO ROAD

12-ORA-073-16.25-LGNB, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: EL TORO ROAD

12-ORA-073-16.25-LGNB, Orange, CA

Built 1996 ADT: 10,000

SR 73 SB

Over: SAN DIEGO CR, UNIVERSITY

12-ORA-073-24.36-NPTB, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: SAN DIEGO CR, UNIVERSITY

12-ORA-073-24.36-IRVN, Orange, CA

Built 1996 ADT: 10,000

MACARTHUR-S73 ONRA

Over: SR 73 & MACARTHUR-N73 ON

12-ORA-073-24.02-IRVN, Orange, CA

Built 1996 ADT: 66,000

MACARTHUR BLVD

Over: SR 73, RAMPS, BONITA CRK

12-ORA-073-23.82-IRVN, Orange, CA

Built 1996 ADT: 66,000

MACARTHUR-N73 ONRA

Over: SR 73, RAMPS, BONITA CRK

12-ORA-073-23.75-IRVN, Orange, CA

Built 1996 ADT: 4,880

STATE ROUTE 55

Over: UTILITY OC

12-ORA-055-R2.52-CMS, Orange, CA

Built 1992 ADT: 122,000

BAKE PARKWAY

Over: INTERSTATE 5

12-ORA-005-20.84-IRVN, Orange, CA

Built 1996 ADT: 282,000

BAKE PKWY-N405 RMP

Over: INTERSTATE 5

12-ORA-005-21.33-IRVN, Orange, CA

Built 1995 ADT: 28,000

S5-BAKE PKWY OFFRP

Over: I 405,5-405 HOV, & RAMPS

12-ORA-005-21.33-IRVN, Orange, CA

Built 1996 ADT: 2,336

N5-IRVINE CTR OFF

Over: BAKE PKWY-N405 ON-RAMP

12-ORA-005-21.60-IRVN, Orange, CA

Built 1996 ADT: 28,200

BISON AV-N73 ON RA

Over: N73-MACARTHUR BL OFF-RMP

12-ORA-073-23.60-IRVN, Orange, CA

Built 1996 ADT: 5,850

S73-BISON OFF-RAMP

Over: MACARTHUR-S73 ON-RAMP

12-ORA-073-23.60-IRVN, Orange, CA

Built 1996 ADT: 4,880

SR 73 SB

Over: LAGUNA CANYON ROAD

12-ORA-073-16.75-LGNB, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: LAGUNA CANYON ROAD

12-ORA-073-16.75-LGNB, Orange, CA

Built 1996 ADT: 10,000

SR 73 SB

Over: CABOT ROAD

12-ORA-073-11.28-IRVN, Orange, CA

Built 1996 ADT: 5,000

SR 73 NB

Over: CROWN VALLEY PK,CABOT RD

12-ORA-073-11.31-LGNG, Orange, CA

Built 1996 ADT: 5,000

SR 73 SB

Over: CROWN VALLEY PARKWAY

12-ORA-073-11.42-LGNG, Orange, CA

Built 1996 ADT: 15,000

SR 73 SB

Over: GREENFIELD DRIVE

12-ORA-073-11.76-LGNH, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: GREENFIELD DRIVE

12-ORA-073-11.76-LGNH, Orange, CA

Built 1996 ADT: 10,000

LA PAZ RD-S73 ON

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

SR 73 SB

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

N73-LA PAZ RD OFF

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

LA PAZ RD-S73 ONRA

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

SR 73 SB

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

SR 73 NB

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

MOULTON PKWY-N73

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

N73-LA PAZ RD OFF

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

LA PAZ RD-S73 ONRP

Over: LA PAZ ROAD

12-ORA-073-13.40-LGNG, Orange, CA

Built 1996 ADT: 15,000

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

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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.