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)

Sort:

SR 73 SB

Over: LA PAZ ROAD

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

Built 1996 ADT: 15,000

SR 73 NB

Over: LA PAZ ROAD

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

Built 1996 ADT: 15,000

LA PAZ RD-N73 ONRP

Over: LA PAZ ROAD

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

Built 1996 ADT: 15,000

ALICIA PARKWAY

Over: STATE ROUTE 73

12-ORA-073-13.77-LGNG, Orange, CA

Built 1996 ADT: 50,000

ALISO CREEK ROAD

Over: SR 73 & RAMPS

12-ORA-073-14.39-LGNG, Orange, CA

Built 1996 ADT: 50,000

SR 73 SB

Over: ALISO VIEJO PKWY

12-ORA-073-14.84-LGNG, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: ALISO VIEJO PKWY

12-ORA-073-14.84-LGNG, Orange, CA

Built 1996 ADT: 10,000

GLENWD/PACIFIC DR

Over: STATE ROUTE 73

12-ORA-073-15.25-LGNG, Orange, CA

Built 1996 ADT: 61,000

SR 73 SB

Over: NEWPORT COAST DRIVE

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 20,000

SR 73 NB

Over: NEWPORT COAST DRIVE

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 20,000

NEWPORT COAST DR

Over: NEWPORT COAST DR-N37 ON

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 4,070

S73-BONITA CYN OFF

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

SR 73 SB

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

BONITA CYN-N73 ON

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

BISON AVE

Over: STATE ROUTE 73

12-ORA-073-23.46-IRVN, Orange, CA

Built 1996 ADT: 66,000

N5-JAMBOREE OFF-RA

Over: STATE ROUTE 261

12-ORA-005-27.50-IRVN, Orange, CA

Built 1998 ADT: 34,600

BRYAN AVENUE

Over: STATE ROUTE 261

12-ORA-261-1.20-TUS, Orange, CA

Built 1998 ADT: 29,000

IRVINE BOULEVARD

Over: STATE ROUTE 261

12-ORA-261-1.60-TUS, Orange, CA

Built 1997 ADT: 29,000

PORTOLA PARKWAY

Over: STATE ROUTE 261

12-ORA-261-3.50-TUS, Orange, CA

Built 1997 ADT: 29,000

IRVINE CENTER DR

Over: S133 OFF RAMP

12-ORA-005-23.09-IRVN, Orange, CA

Built 1998 ADT: 3,744

S133-BARRANCA PKWY

Over: S5-S133 CONNECTOR RAMP

12-ORA-133-M9.35-IRVN, Orange, CA

Built 1996 ADT: 6,840

S133-S5 CONNECTOR

Over: INTERSTATE 5, ST RTE 133

12-ORA-133-M9.40-IRVN, Orange, CA

Built 1998 ADT: 37,700

STATE ROUTE 133 SB

Over: INTERSTATE 5 & CONNECTOR

12-ORA-133-9.53-IRVN, Orange, CA

Built 1996 ADT: 8,072

STATE ROUTE 133 NB

Over: INTERSTATE 5 & CONNECTOR

12-ORA-133-9.53-IRVN, Orange, CA

Built 1996 ADT: 243,700

S5-N133 CONN

Over: SAND, I5, MR. WY, SR133

12-ORA-005-R24.06-IRVN, Orange, CA

Built 1998 ADT: 9,758

S133-N5 CONNECTOR

Over: RAMPS & LOCAL STREETS

12-ORA-133-10.30-IRVN, Orange, CA

Built 1998 ADT: 16,514

TRABUCO ROAD

Over: STATE ROUTE 133

12-ORA-133-10.90-IRVN, Orange, CA

Built 1997 ADT: 48,400

IRVINE BLVD

Over: STATE ROUTE 133

12-ORA-133-11.90-IRVN, Orange, CA

Built 1997 ADT: 51,700

ROUTE 133 SB

Over: PORTOLA PARKWAY

12-ORA-133-12.55-IRVN, Orange, CA

Built 1998 ADT: 11,000

ROUTE 133 NB

Over: PORTOLA PARKWAY

12-ORA-133-12.55-IRVN, Orange, CA

Built 1998 ADT: 11,000

N241-S133 CONNECTR

Over: STATE ROUTE 241

12-ORA-241-26.87-IRVN, Orange, CA

Built 1998 ADT: 48,000

BEE CANYON RD

Over: SR 241 & CONNECTOR

12-ORA-241-27.39-IRVN, Orange, CA

Built 1997 ADT: 36,000

N241-W91 CONNECTOR

Over: STATE ROUTE 91

12-ORA-241-38.76-ANA, Orange, CA

Built 1998 ADT: 17,700

N241-E91 CONNECTOR

Over: SR 91 RAMPS & GYPSUM CYN

12-ORA-241-38.84-ANA, Orange, CA

Built 1998 ADT: 2,500

W91-S241 CONNECTOR

Over: STATE ROUTE 91

12-ORA-091-R16.31-ANA, Orange, CA

Built 1998 ADT: 2,460

JAMBOREE-S73 ON RA

Over: S73-UNIVERSITY DR OFF-RP

12-ORA-073-24.70-NPTB, Orange, CA

Built 1996 ADT: 5,700

CHAPMAN AVENUE

Over: STATE ROUTE 261

12-ORA-261-6.05-ORA, Orange, CA

Built 1997 ADT: 29,000

SANTIAGO CANYON RD

Over: STATE ROUTE 241

12-ORA-241-32.37-RSM, Orange, CA

Built 1997 ADT: 36,000

SANTIAGO-N241 ONRA

Over: STATE ROUTE 241

12-ORA-241-32.52-RSM, Orange, CA

Built 1997 ADT: 36,000

INTERSTATE 5

Over: CHAPMAN AVE

12-ORA-005-34.83-TUS, Orange, CA

Built 2000 ADT: 35,000

INTERSTATE 5

Over: STATE COLLEGE BLVD

12-ORA-005-35.19-ANA, Orange, CA

Built 2000 ADT: 34,000

S5-STATE COL OFF-R

Over: ORANGEWOOD AVE

12-ORA-005-35.42-ANA, Orange, CA

Built 2000 ADT: 4,640

INTERSTATE 5

Over: ORANGEWOOD AVE

12-ORA-005-35.59-ANA, Orange, CA

Built 2000 ADT: 29,000

GENE AUTRY WAY

Over: INTERSTATE 5 SB

12-ORA-005-35.92-ANA, Orange, CA

Built 2000 ADT: 267,000

HOV-GENE AUTRY WAY

Over: INTERSTATE 5 NB

12-ORA-005-35.92-ANA, Orange, CA

Built 2000 ADT: 267,000

ANAHEIM-N5 ON-RAMP

Over: N5-KATELLE OFF-RAMP

12-ORA-005-36.05-ANA, Orange, CA

Built 2000 ADT: 16,331

INTERSTATE 5

Over: KATELLA AVENUE

12-ORA-005-36.15-ANA, Orange, CA

Built 2000 ADT: 31,000

S5-KATELLA OFF-RP

Over: KATELLA AVENUE

12-ORA-005-36.15-ANA, Orange, CA

Built 2000 ADT: 31,000

S5-ORANGEWOOD AVE

Over: KATELLA AVE

12-ORA-005-36.15-ANA, Orange, CA

Built 2000 ADT: 31,000

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026