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:

AVENIDA DEL ESTE

Over: RIO DEL ORO CHANNEL

100' E/O AVNDA RIO DL ORO, Orange, CA

Built 1970 Load: 24.3 t ADT: 550

AVENIDA DEL ESTE

Over: RIO DEL ORO CHANNEL

50' E/O AVENDA RIO DL ORO, Orange, CA

Built 1970 Load: 24.3 t ADT: 550

VIA LOMAS

Over: BIKEWAY UNDERCROSSING

100' WEST OF ALICIA PKWY, Orange, CA

Built 1970 Load: 24.3 t ADT: 2,000

PACIFIC COAST HWY

Over: PEDESTRIAN WALKWAY

.12 MI NW NIGUEL RD, Orange, CA

Built 1969 Load: 24.3 t ADT: 40,000

KITTERMAN DRIVE

Over: SILVERADO CANYON CREEK

0.1 MI. S/O SLVRDO CYN RD, Orange, CA

Built 1970 Load: 25.3 t ADT: 200

W/B ALTON PARKWAY

Over: BNSF RY,AMTRAK,METROLINK

0.3 MI NE/O MUIRLAND BLVD, Orange, CA

Built 1981 Load: 25.3 t ADT: 17,000

RANCHO VIEJO ROAD

Over: TRABUCO CREEK CHANNEL

0.1 MI SE/O TRABCO CRK RD, Orange, CA

Built 1959 Load: 25.6 t ADT: 12,000

STATE ROUTE 57

Over: BNSF RY SPUR TRACK

12-ORA-057-16.63-PLCN, Orange, CA

Built 1969 Load: 27.5 t ADT: 271,000

BARANCA PKWY WB

Over: PETERS CANYON CHANNEL

0.2 MI E JAMBOREE RD, Orange, CA

Built 1969 Load: 28.2 t ADT: 10,700

E/B LA PAZ ROAD

Over: OSO CREEK

0.2 MI E/O MARGUERITE PKW, Orange, CA

Built 1979 Load: 29.2 t ADT: 14,140

BRISTOL ST

Over: SANTIAGO CREEK CHANNEL

0.3 MI S/O MEMORY LANE, Orange, CA

Built 1947 Load: 29.5 t ADT: 55,000

S73-N&S133

Over: WILDLIFE PATHWAY

12-ORA-073-16.95-LGNB, Orange, CA

Built 1996 Load: 30.5 t ADT: 1,701

SANTIAGO CNYN ROAD

Over: SANTIAGO CREEK

0.2 MI W/O SILVERADO CYN, Orange, CA

Built 1963 Load: 30.5 t ADT: 7,000

MAGNOLIA ST

Over: HUNTINGTON BEACH CHANNEL

0.2 MI N/O RTE 1, Orange, CA

Built 1973 Load: 30.5 t ADT: 9,000

W/B LA PAZ ROAD

Over: SCRRA,BNSF RY,AMTRAK

200' NE/O MUIRLANDS BLVD, Orange, CA

Built 1965 Load: 30.8 t ADT: 16,000

E/B LA PAZ ROAD

Over: SCRRA,BNSF RY,AMTRAK

200' NE/O MUIRLANDS BLVD., Orange, CA

Built 1965 Load: 30.8 t ADT: 21,500

WESTMINSTER AVE-EB

Over: LOS ALAMITOS CHANNEL

0.8 MI W/O SEAL BEACH BL., Orange, CA

Built 1964 Load: 31.1 t ADT: 13,000

WESTMINSTER AVE-WB

Over: FEDERAL STORM CHANNEL

0.7 MI W/O SEAL BEACH BL., Orange, CA

Built 1964 Load: 31.1 t ADT: 13,000

WESTMINSTER AVE-EB

Over: FEDERAL STORM CHANNEL

0.7 MI W/O SEAL BEACH BL., Orange, CA

Built 1964 Load: 31.1 t ADT: 11,000

CAMPUS DRIVE

Over: SAN DIEGO CREEK CHANNEL

100' NW UNIVERSITY DR, Orange, CA

Built 1974 Load: 31.1 t ADT: 17,000

STATE ROUTE 57

Over: BREA TRAIL

12-ORA-057-20.61-BRE, Orange, CA

Built 1971 Load: 31.8 t ADT: 245,000

ROSTRATA AVENUE

Over: BREA CREEK CHANNEL

0.2 MI. N/O ARTESIA BLVD., Orange, CA

Built 1987 Load: 31.8 t ADT: 1,927

STATE ROUTE 1

Over: SANTA ANA RIVER

12-ORA-001-21.55-HNTB, Orange, CA

Built 1992 Load: 32.4 t ADT: 32,000

STATE ROUTE 1

Over: ANAHEIM BAY

12-ORA-001-31.75-SLB, Orange, CA

Built 1967 Load: 32.4 t ADT: 41,000

S1-COAST HIWAY OFF

Over: SAN JUAN CREEK

12-ORA-001-R1.00-DAPT, Orange, CA

Built 1927 Load: 32.4 t ADT: 8,000

STATE ROUTE 74

Over: SAN JUAN CREEK

12-ORA-074-10.44-SJCP, Orange, CA

Built 1987 Load: 32.4 t ADT: 9,800

STATE ROUTE 74

Over: HOT SPRINGS CANYON

12-ORA-074-12.34-SJCP, Orange, CA

Built 1991 Load: 32.4 t ADT: 9,800

SR 39 (BEACH BLVD)

Over: BREA CREEK CHANNEL

12-ORA-039-15.83-BPK, Orange, CA

Built 1925 Load: 32.4 t ADT: 57,500

SR 90 (IMPERIAL)

Over: IMPERIAL CHANNEL

12-ORA-090-1.23-LHB, Orange, CA

Built 1968 Load: 32.4 t ADT: 47,000

SR 90 (IMPERIAL)

Over: BREA CANYON CREEK

12-ORA-090-4.07-BRE, Orange, CA

Built 1959 Load: 32.4 t ADT: 47,500

STATE ROUTE 91

Over: SANTA ANA RIVER

12-ORA-091-8.57-ANA, Orange, CA

Built 1954 Load: 32.4 t ADT: 213,000

SR 39 (BEACH BLVD)

Over: COYOTE CREEK CHANNEL

12-ORA-039-19.23-LHB, Orange, CA

Built 1962 Load: 32.4 t ADT: 40,000

SR 90 (IMPERIAL)

Over: LOFTUS DIVERSION CHANNEL

12-ORA-090-5.63-BRE, Orange, CA

Built 1970 Load: 32.4 t ADT: 44,500

INTERSTATE 5

Over: AVENIDA VAQUERO

12-ORA-005-4.97-SCLE, Orange, CA

Built 1981 Load: 32.4 t ADT: 242,200

INTERSTATE 405

Over: UP RR

12-ORA-405-17.21-WTM, Orange, CA

Built 1965 Load: 32.4 t ADT: 256,000

SR 39 (BEACH BLVD)

Over: E GARDEN GROVE CHANNEL

12-ORA-039-5.13-HNTB, Orange, CA

Built 1961 Load: 32.4 t ADT: 72,000

SR 39 (BEACH BLVD)

Over: WESTMINSTER STORM DRAIN

12-ORA-039-7.14-WTM, Orange, CA

Built 1954 Load: 32.4 t ADT: 59,000

INTERSTATE 405

Over: SAN DIEGO CREEK CHANNEL

12-ORA-405-6.41-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 266,000

S133-N405 CONN

Over: SAN DIEGO CREEK

12-ORA-133-8.59-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 13,270

ROUTE 133 SB

Over: SAN DIEGO CREEK

12-ORA-133-8.59-IRVN, Orange, CA

Built 1968 Load: 32.4 t ADT: 20,000

ROUTE 133 NB

Over: SAN DIEGO CREEK

12-ORA-133-8.59-IRVN, Orange, CA

Built 1958 Load: 32.4 t ADT: 20,000

STATE ROUTE 91

Over: COYOTE CREEK

12-ORA-091-R0.10-LPMA, Orange, CA

Built 1969 Load: 32.4 t ADT: 235,500

SR 39 (BEACH BLVD)

Over: ANAHEIM FLOOD CONTROL CH

12-ORA-039-9.37-STT, Orange, CA

Built 1958 Load: 32.4 t ADT: 52,000

INTERSTATE 405

Over: BOLSA CHICA DITCH

12-ORA-405-20.77-SLB, Orange, CA

Built 1959 Load: 32.4 t ADT: 374,000

STATE ROUTE 57

Over: SANTA ANA RIVER

12-ORA-057-11.96-ORA, Orange, CA

Built 1976 Load: 32.4 t ADT: 229,000

INTERSTATE 405

Over: LOS ALAMITOS CHANNEL

12-ORA-405-24.10-SLB, Orange, CA

Built 1965 Load: 32.4 t ADT: 255,000

INTERSTATE 405

Over: ANAHEIM-BARBER CITY CH

12-ORA-405-19.45-WTM, Orange, CA

Built 1965 Load: 32.4 t ADT: 256,000

SR 55

Over: GREEN FIELD STORM CHANNL

12-ORA-055-R6.10-CMS, Orange, CA

Built 1966 Load: 32.4 t ADT: 222,000

W MACAR-N55 ON-RMP

Over: MACAR STORM CHANNEL

12-ORA-055-R7.04-SA, Orange, CA

Built 1966 Load: 32.4 t ADT: 18,200

S55-MACAR OFF RAMP

Over: MACARTHUR STRM CHANNEL

12-ORA-055-R7.14-SA, Orange, CA

Built 1966 Load: 32.4 t ADT: 19,200

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