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:

405-55 HOV LANES

Over: I 405 NB, SR 55 NB

12-ORA-405-8.48-SA, Orange, CA

Built 2004 ADT: 222,000

TRABUCO CRK TRAIL

Over: STATE ROUTE 241

12-ORA-241-18.64-RSM, Orange, CA

Built 2000 ADT: 18,300

EOC ROAD

Over: STATE ROUTE 241

12-ORA-241-31.66-RSM, Orange, CA

Built 1997 ADT: 36,000

REDHILL AVE

Over: INTERSTATE 405

12-ORA-405-8.40-CMS, Orange, CA

Built 2002 ADT: 274,000

N5-STATE COL OFFRA

Over: CHAPMAN AVE-N5 ON-RAMP

12-ORA-005-35.00-ANA, Orange, CA

Built 2000 ADT: 1,001

SR 55

Over: ST RTE 1 (PCH)

12-ORA-055-0.27-NPTB, Orange, CA

Built 1999 ADT: 40,000

EL CAMINO REAL

Over: STATE ROUTE 261

12-ORA-261-0.90-IRVN, Orange, CA

Built 1998 ADT: 29,000

N73-FAIRVIEW OFF

Over: INTERSTATE 405 & OFFRAMP

12-ORA-073-R27.64, Orange, CA

Built 2003 ADT: 261,000

FAIRVIEW-NB ON-RA

Over: NB-HARBOR OFF-RA

12-ORA-405-11.12-CMS, Orange, CA

Built 2003 ADT: 5,000

HARBOR-N405 ON-RA

Over: HARBOR BLVD

12-ORA-405-11.47-CMS, Orange, CA

Built 2003 ADT: 20,000

N73-S55 CONNECTOR

Over: STATE ROUTE 55

12-ORA-073-R26.57-NPTB, Orange, CA

Built 1999 ADT: 22,000

PEDESTRIAN WALKWAY

Over: STATE ROUTE 1

12-ORA-001-24.10-HNTB, Orange, CA

Built 2008 ADT: 37,000

STATE ROUTE 22

Over: HARBOR BLVD

12-ORA-022-R7.83-GGR, Orange, CA

Built 2008 ADT: 25,000

JEFFREY TRAIL

Over: INTERSTATE 405

12-ORA-405-3.55-IRVN, Orange, CA

Built 2005 ADT: 237,000

STATE ROUTE 90

Over: ESPERANZA RD,BNSF,AMTRAK

12-ORA-090-12.25, Orange, CA

Built 2010 ADT: 30,000

STANTON AVE

Over: INTERSTATE 5, RAMPS

12-ORA-005-43.13, Orange, CA

Built 2010 ADT: 191,700

INTERSTATE 5

Over: ARTESIA BLVD

12-ORA-005-44.24, Orange, CA

Built 2010 ADT: 30,000

WESTERN AVENUE

Over: INTERSTATE 5, RAMPS

12-ORA-005-43.70, Orange, CA

Built 2010 ADT: 167,500

SR 39 (BEACH BLVD)

Over: INTERSTATE 5, RAMPS

12-ORA-039-15.06, Orange, CA

Built 2010 ADT: 168,000

STATE ROUTE 22

Over: BROOKHURST STREET

12-ORA-022-R5.82-GGR, Orange, CA

Built 2007 ADT: 25,000

STATE ROUTE 22

Over: EUCLID STREET

12-ORA-022-R6.81-GGR, Orange, CA

Built 2007 ADT: 20,000

PEDESTRIAN WALKWAY

Over: STATE ROUTE 22

12-ORA-022-R8.33-ANA, Orange, CA

Built 2008 ADT: 229,000

LEWIS ST

Over: STATE ROUTE 22

12-ORA-022-R9.40-ANA, Orange, CA

Built 2008 ADT: 250,000

E22-S5 CONNECTOR

Over: S5&S57-E22 & S57-S5 RMPS

12-ORA-022-R10.43, Orange, CA

Built 2008 ADT: 22,000

E22-N5&N57 CONN

Over: N5-W22 CONNECTOR RAMP

12-ORA-022-R10.66-ANA, Orange, CA

Built 2008 ADT: 13,000

E22-N5 CONNECTOR

Over: STATE ROUTE 22 & RAMP

12-ORA-022-R10.74-SA, Orange, CA

Built 2008 ADT: 155,000

S5&S57-W22 CONNECT

Over: THE CITY DRIVE

12-ORA-005-34.53-ANA, Orange, CA

Built 2008 ADT: 34,000

S5&S57-W22 CONNECT

Over: W22-METROPOLITAN OFF RMP

12-ORA-005-34.55-SA, Orange, CA

Built 2008 ADT: 5,247

STATE ROUTE 22

Over: MAGNOLIA STREET

12-ORA-022-R4.81-GGR, Orange, CA

Built 2007 ADT: 20,000

E22-N405 CONN.

Over: RTE405

12-ORA-022-R0.39-SLB, Orange, CA

Built 2014 ADT: 295,000

E22-N605 CONN.

Over: RTE405

12-ORA-022-R0.39-SLB, Orange, CA

Built 2014 ADT: 295,000

405-605 HOV

Over: RT405 & CONN.

12-ORA-405-24.02-SLB, Orange, CA

Built 2014 ADT: 255,000

SEAL BEACH BLVD

Over: STATE ROUTE 405

12-ORA-405-22.64-SLB, Orange, CA

Built 2014 ADT: 5,000

N405-W22 CONNECTOR

Over: INTERSTATE 405

12-ORA-405-23.30-LALM, Orange, CA

Built 2012 ADT: 255,000

S405-E22

Over: INTERSTATE 405

12-ORA-405-20.75-SLB, Orange, CA

Built 2015 ADT: 5,000

BOLSA CHICA ROAD

Over: ROUTE 22

12-ORA-022-R0.92-SLB, Orange, CA

Built 2015 ADT: 157,000

405-22 HOV

Over: I-405 NB

12-ORA-405-20.67-SLB, Orange, CA

Built 2015 ADT: 128,000

ROUTE 74

Over: ROUTE 5

12-ORA-074-0.01-SJCP, Orange, CA

Built 2018 ADT: 225,000

EDWARDS STREET

Over: ROUTE 405

12-ORA-405-18.60-WTM, Orange, CA

Built 2022 ADT: 256,000

GOLDENWEST STREET

Over: ROUTE 405

12-ORA-405-17.90-WTM, Orange, CA

Built 2022 ADT: 256,000

MAGNOLIA STREET

Over: ROUTE 405

12-ORA-405-15.21-HNTB, Orange, CA

Built 2021 ADT: 263,000

SLATER AVENUE

Over: ROUTE 405

12-ORA-405-14.13-FNV, Orange, CA

Built 2019 ADT: 280,000

WESTMINSTER BLVD

Over: ROUTE 405

12-ORA-405-19.00-WTM, Orange, CA

Built 2022 ADT: 256,000

VENTA SPUR TRAIL

Over: SR 133

12-ORA-133-11.35-IRVN, Orange, CA

Built 2022 ADT: 37,700

BNSF RR, METROLINK

Over: KATELLA AVENUE

0.2 MI E/O STATE COLLEGE, Orange, CA

Built 1967 ADT: 35,600

PEDESTRIAN OC

Over: NEWPORT BOULEVARD

1.0 MI. S/O CHAPMAN AVE., Orange, CA

Built 1969 ADT: 9,000

METROLINK, BNSF

Over: 1 ST STREET

0.71 MI W/O I-5, Orange, CA

Built 1962 ADT: 35,000

METROLINK, BNSF

Over: FIRST STREET

0.7 MI W/O I-5, Orange, CA

Built 1962 ADT: 35,000

CROWN VALLEY PKWY

Over: SCRRA,BNSF RY,AMTRAK,ETC

100 FT W/O ROUTE 5, Orange, CA

Built 1970 ADT: 5,800

BNSF,AMTRAK,METRO

Over: LAKE FOREST DRIVE

0.3 MI N/O MUIRLANDS BLVD, Orange, CA

Built 1974 ADT: 49,000

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

Related

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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