San Diego County, CA

1,707 public highway bridges

San Diego County Bridge Snapshot

San Diego County, California contains 1,707 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.5% are rated “Good,” 20% “Fair,” 1.6% “Poor,” and 1.6% 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.

1,707

Total Bridges

29.5%

Good

1.6%

Poor

1.6%

Structurally Deficient

Condition Distribution

Good

29.5% (504)

Fair

20% (341)

Poor

1.6% (27)

SD

1.6% (27)

All Bridges (1,707)

Sort:

STATE ROUTE 79

Over: SOME CREEK

11-SD-079-41.96, San Diego, CA

Built 1927 Load: 20.7 t ADT: 1,700

MOUNT HELIX DR

Over: MOUNT HELIX DR

0.36MI S/O FUERTE DRIVE, San Diego, CA

Built 1934 Load: 20.7 t ADT: 859

INTERSTATE 5

Over: CARMEL MOUNTAIN RD

11-SD-005-R31.80-SD, San Diego, CA

Built 1966 Load: 21.4 t ADT: 203,000

OLD HWY 80

Over: COTTONWOOD CR

2 MI W/O BUCKMAN SPRINGS, San Diego, CA

Built 1928 Load: 21.4 t ADT: 1,145

LILAC ROAD

Over: SAN LUIS REY RIVER

EAST OF PALA, San Diego, CA

Built 2021 Load: 21.6 t ADT: 500

GARNET AVE

Over: ROSE CANYON CREEK

0.2 MI W/O MISSION BAY DR, San Diego, CA

Built 1939 Load: 22.0 t ADT: 58,500

RIVERSIDE DR

Over: SWEETWATER RIVER

0.3 MI N/O SR 79, San Diego, CA

Built 1947 Load: 22.0 t ADT: 2,500

MIRAMAR RD

Over: MTDB, BNSF RY, & AMTRAK

1.2 MI E OF I-805, San Diego, CA

Built 1975 Load: 22.7 t ADT: 60,580

BEECH ST

Over: FALLBROOK CREEK WEST

300FT E/O MISSION RD, San Diego, CA

Built 1954 Load: 23.0 t ADT: 816

STATE ROUTE 94

Over: DULZURA CREEK

11-SD-094-28.50, San Diego, CA

Built 1930 Load: 23.3 t ADT: 7,800

STATE ROUTE 79

Over: DESCANSO CREEK

11-SD-079-2.57, San Diego, CA

Built 1946 Load: 23.3 t ADT: 3,200

INTERSTATE 5

Over: CHOLLAS CREEK

11-SD-005-R12.73-SD, San Diego, CA

Built 1963 Load: 23.3 t ADT: 164,000

BUCKMAN SPRINGS RD

Over: COTTONWOOD CREEK

3.5 MI S/O ROUTE I-8, San Diego, CA

Built 1950 Load: 23.3 t ADT: 4,300

OLD HWY 101

Over: NCTD, BNSF RY, AMTRAK

SAN ONOFRE STATE PARK, San Diego, CA

Built 1937 Load: 23.7 t ADT: 8,600

DEL MAR ROAD

Over: NCTD RAILWAY

0.2 MILES WEST OF VANDEGR, San Diego, CA

Built 1947 Load: 24.0 t ADT: 10,675

INTERSTATE 8

Over: ALVARADO CANYON CREEK

11-SD-008-10.61-LMSA, San Diego, CA

Built 1939 Load: 24.3 t ADT: 175,000

INTERSTATE 5

Over: LAS ENCINAS CREEK

11-SD-005-R46.60-CBD, San Diego, CA

Built 1965 Load: 24.3 t ADT: 222,000

ANNA AVE

Over: CUDAHY CHANNEL

0.1MI N/O CHP STATION, San Diego, CA

Built 1933 Load: 24.3 t ADT: 50

POWAY RD

Over: RATTLESNAKE CREEK

100FT E/O TARASCAN DR., San Diego, CA

Built 1964 Load: 24.3 t ADT: 33,122

CARLSBAD BLVD

Over: ENCINA DISCHARGE CH

0.5 MI N/O CANNON RD, San Diego, CA

Built 1954 Load: 24.3 t ADT: 22,760

LILAC RD

Over: KEYS CREEK

2.7MI N/O OLD CASTLE RD, San Diego, CA

Built 1968 Load: 24.3 t ADT: 1,433

GOPHER CYN RD

Over: S FK GOPHER CYN

2.9MI W/O ROUTE I-15, San Diego, CA

Built 1972 Load: 24.3 t ADT: 14,975

FAIRBURN ST

Over: LOS PENASQUITOS CRK TRIB

125FT E/O FLORAL AVE, San Diego, CA

Built 1972 Load: 24.3 t ADT: 100

GATE DR

Over: POWAY CREEK

0.08MI S/O POWAY RD, San Diego, CA

Built 1971 Load: 24.3 t ADT: 750

47TH ST

Over: CHOLLAS CREEK

0.3 MI S/O MARKET ST, San Diego, CA

Built 1970 Load: 24.3 t ADT: 10,400

LINCOLN AVE

Over: REIDY CREEK

0.3M E/O ROCK SPRNGS RD, San Diego, CA

Built 1966 Load: 24.3 t ADT: 15

LINCOLN AVE

Over: WASHINGTON CHANNEL

0.11MI S/O OF MAIN ST, San Diego, CA

Built 1969 Load: 24.3 t ADT: 3,000

LAWRENCE WELK DR

Over: SOUTH FORK MOOSA CREEK

250 FT E/O CHAMPAGNE BLVD, San Diego, CA

Built 1966 Load: 24.3 t ADT: 2,625

CROUCH ST

Over: LOMA ALTA CREEK

110FT S/O OCEANSIDE BLVD, San Diego, CA

Built 1965 Load: 24.3 t ADT: 10,900

HOLLAND RD

Over: POMERADO CREEK

300FT E/O POMERADO RD, San Diego, CA

Built 1972 Load: 24.3 t ADT: 1,500

VAUGHAN RD

Over: POMERADO CREEK

300FT E/O POMERADO RD, San Diego, CA

Built 1972 Load: 24.3 t ADT: 1,500

WANESTA DR

Over: RATTLESNAKE CREEK

0.12MI E/O TARASCAN RD, San Diego, CA

Built 1970 Load: 24.3 t ADT: 120

HALECREST DRIVE

Over: TELEGRAPH CANYON CHANNEL

20 FT N/O TELEGRAPH CYN, San Diego, CA

Built 1966 Load: 24.3 t ADT: 4,100

GREENFIELD DRIVE

Over: FORESTER CREEK TRIBUTARY

0.2MI E/O PIONEER@VERNON, San Diego, CA

Built 1971 Load: 24.3 t ADT: 11,400

WINTER HAVEN ROAD

Over: SAN LUIS REY RIVER TRIB

0.1MI E/O MISSION RD., San Diego, CA

Built 1954 Load: 24.3 t ADT: 1,495

CARLSBAD BLVD

Over: BUENA VISTA CREEK

0.3MI S/O VISTA WAY, San Diego, CA

Built 1914 Load: 24.5 t ADT: 19,173

BASILONE ROAD

Over: SANTA MARGARITA RIVER

0.3 MILE NW OF VANDEGRIFT, San Diego, CA

Built 2000 Load: 24.6 t ADT: 10,550

E52-N805 CONNECTOR

Over: SAN CLEMENTE CREEK

11-SD-052-3.36-SD, San Diego, CA

Built 1972 Load: 25.6 t ADT: 14,700

INTERSTATE 5

Over: LOMA ALTA CREEK

11-SD-005-R52.18-OCN, San Diego, CA

Built 1953 Load: 25.9 t ADT: 203,000

HAYMAR DR

Over: BUENA VISTA CREEK

0.35MI E/O EL CAMINO REAL, San Diego, CA

Built 1966 Load: 26.2 t ADT: 608

INTERSTATE 5

Over: SAN DIEGUITO RIVER

11-SD-005-R35.66-SD, San Diego, CA

Built 1964 Load: 26.6 t ADT: 244,000

E52-S805 CONNECTOR

Over: SAN CLEMENTE CREEK

11-SD-052-3.34-SD, San Diego, CA

Built 1972 Load: 26.6 t ADT: 18,000

INTERSTATE 5

Over: ALISO CREEK

11-SD-005-R59.62-OCN, San Diego, CA

Built 1967 Load: 26.9 t ADT: 66,000

INTERSTATE 5

Over: LAS PULGAS RD

11-SD-005-R62.08-OCN, San Diego, CA

Built 1967 Load: 26.9 t ADT: 65,000

INTERSTATE 5

Over: LAS PULGAS RD

11-SD-005-R62.08-OCN, San Diego, CA

Built 1967 Load: 26.9 t ADT: 65,000

STATE ROUTE 52 EB

Over: PARK

11-SD-052-1.93-SD, San Diego, CA

Built 1970 Load: 26.9 t ADT: 48,500

HARBOR DR

Over: CHOLLAS CREEK

0.18MI N/O 32ND ST, San Diego, CA

Built 1942 Load: 26.9 t ADT: 16,480

INTERSTATE 8 EB

Over: CARRIZO CREEK

11-SD-008-R72.28, San Diego, CA

Built 1967 Load: 27.5 t ADT: 8,150

INTERSTATE 15 NB

Over: MESA ROCK RD

11-SD-015-R34.89, San Diego, CA

Built 1978 Load: 27.5 t ADT: 70,000

INTERSTATE 5

Over: LAS FLORES CREEK

11-SD-005-R61.43-OCN, San Diego, CA

Built 1967 Load: 27.9 t ADT: 66,000

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

Related

Browse all → | Rankings →

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