Total Bridges
27,040
Public highway bridges in California
State profile · Below national median SD
California bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in California — drawn straight from the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
- 4.6%
- Structurally deficient
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges rated 0-4
Structurally Deficient
4.6%
1,244 bridges flagged for repair priority
-2.4pp vs national avg 7.0%
California vs national bridge condition
California — Good condition share 32.5%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
California — Structurally deficient share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — California (FHWA NBI)
Counties (58)
Alameda 800 Alpine 32 Amador 62 Butte 441 Calaveras 106 Colusa 211 Contra Costa 686 Del Norte 96 El Dorado 196 Fresno 929 Glenn 242 Humboldt 398 Imperial 448 Inyo 67 Kern 686 Kings 168 Lake 129 Lassen 108 Los Angeles 3937 Madera 250 Marin 217 Mariposa 109 Mendocino 357 Merced 532 Modoc 87 Mono 49 Monterey 390 Napa 160 Nevada 135 Orange 1224 Placer 347 Plumas 170 Riverside 1142 Sacramento 775 San Benito 76 San Bernardino 1465 San Diego 1707 San Francisco 170 San Joaquin 666 San Luis Obispo 408 San Mateo 393 Santa Barbara 429 Santa Clara 1041 Santa Cruz 203 Shasta 500 Sierra 65 Siskiyou 423 Solano 383 Sonoma 613 Stanislaus 390 Sutter 120 Tehama 452 Trinity 194 Tulare 599 Tuolumne 128 Ventura 511 Yolo 282 Yuba 136
California vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below California on the same metric.
39
Ohio
4.54% top marginal rate
34
New Jersey
4.59% top marginal rate
06
California
4.60% top marginal rate
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by composite NBI rating. Each is inspected at least every 24 months.
SPRING CREEK RD
PoorOver: FALL RIVER
0.5 MI N OF MCARTHUR RD, Shasta, CA
Built 1950 Load: 2.7 t ADT: 50
ORESTIMBA ROAD
PoorOver: CCID MAIN CANAL
0.1 MI E DRAPER RD, Stanislaus, CA
Built 1919 Load: 2.9 t ADT: 684
CLARK STREET
PoorOver: M.I.D. CANAL
0.1 MI WEST OF ROAD 26.0, Madera, CA
Built 1955 Load: 3.2 t ADT: 200
GULLING STREET
Structurally DeficientOver: MIDDLE FORK FEATHER RIV
0.2 MI S SH 70, Plumas, CA
Built 1954 Load: 3.2 t ADT: 10,046
AVENUE 10
PoorOver: COTTONWOOD CREEK
JUST E/O ROAD 23, Madera, CA
Built 1950 Load: 3.6 t ADT: 50
S BISHOP AVE
PoorOver: CRESCENT DITCH
0.64 MI S/O MT WHITNEY AV, Fresno, CA
Built 1950 Load: 3.9 t ADT: 125
All Bridges in California
INTERSTATE 5 NB
FairOver: QUIST RD
06-FRE-005-1.70, Fresno, CA
Built 1970 Load: 30.1 t ADT: 15,000
INTERSTATE 5 SB
FairOver: LITTLE PANOCHE EQUIP UC
06-FRE-005-62.20, Fresno, CA
Built 1971 Load: 30.1 t ADT: 17,000
INTERSTATE 5 NB
FairOver: LITTLE PANOCHE EQUIPT UC
06-FRE-005-62.20, Fresno, CA
Built 1971 Load: 30.1 t ADT: 17,000
N OLIVER AVE
FairOver: C & K CANAL
0.26 MI NORTH OF SR 180, Fresno, CA
Built 1940 Load: 30.1 t ADT: 900
W NIELSEN AVE
FairOver: HOUGHTON CANAL
0.2 MI EAST OF HUGHES AVE, Fresno, CA
Built 1925 Load: 30.1 t ADT: 3,015
COUNTY RD 33
FairOver: TEHAMA-COLUSA CANAL
1.3 MI W OF RD 'D', Glenn, CA
Built 1975 Load: 30.1 t ADT: 156
CO RD #12
FairOver: TEHAMA-COLUSA CANAL
0.3 MI EAST OF CO R 'N', Glenn, CA
Built 1975 Load: 30.1 t ADT: 169
U.S. HIGHWAY 101
FairOver: GIBNEY DRIVE
01-HUM-101-R22.44, Humboldt, CA
Built 1964 Load: 30.1 t ADT: 5,100
STATE ROUTE 86 NB
FairOver: PALM WASH
11-IMP-086-58.23, Imperial, CA
Built 1981 Load: 30.1 t ADT: 7,300
CLARK RD
FairOver: NEW RIVER
1 MI N/O SR98, Imperial, CA
Built 1925 Load: 30.1 t ADT: 1,000
STATE ROUTE 168
FairOver: NORTH FORK BISHOP CREEK
09-INY-168-15.40-BIS, Inyo, CA
Built 1982 Load: 30.1 t ADT: 8,000
BIG VALLEY RD
FairOver: ADOBE CREEK
0.2 MI N THOMAS RD, Lake, CA
Built 1963 Load: 30.1 t ADT: 2,962
INTERSTATE 5
FairOver: ABANDONED RR
07-LA-005-R53.94-SCTA, Los Angeles, CA
Built 1964 Load: 30.1 t ADT: 134,090
STATE ROUTE 134
FairOver: LOS ANGELES RIVER
07-LA-134-3.47-LA, Los Angeles, CA
Built 1962 Load: 30.1 t ADT: 201,000
STATE ROUTE 14
FairOver: CALIFORNIA AQUEDUCT
07-LA-014-R57.14, Los Angeles, CA
Built 1966 Load: 30.1 t ADT: 80,000
INTERSTATE 210 WB
FairOver: MACLAY STREET
07-LA-210-R4.94-LA, Los Angeles, CA
Built 1969 Load: 30.1 t ADT: 60,500
STATE ROUTE 14
FairOver: LA AQUEDUCT
07-LA-014-R27.55-SCTA, Los Angeles, CA
Built 1972 Load: 30.1 t ADT: 148,000
STATE ROUTE 14
FairOver: CANYON PARK BLVD
07-LA-014-R31.40-SCTA, Los Angeles, CA
Built 1972 Load: 30.1 t ADT: 113,000
116TH ST E
FairOver: CALIFORNIA AQUEDUCT
1.0MI N/O SR-138 HWY, Los Angeles, CA
Built 1969 Load: 30.1 t ADT: 306
RD 603
FairOver: FRESNO RIVER
0.1 MI E ROAD 407, Madera, CA
Built 1975 Load: 30.1 t ADT: 200
STATE ROUTE 1
FairOver: ESKOOT CREEK
04-MRN-001-12.37, Marin, CA
Built 1957 Load: 30.1 t ADT: 4,100
BRICELAND RD CR435
FairOver: MATTOLE RIVER
0.75 MI S HUM CO LINE, Mendocino, CA
Built 1967 Load: 30.1 t ADT: 26
FOREST ROAD 300
FairOver: PARLIN CREEK
BY JCT RD 320 & RD 340, Mendocino, CA
Built 1958 Load: 30.1 t ADT: 50
STATE ROUTE 99 NB
FairOver: WEBBER CANAL
10-MER-099-19.49, Merced, CA
Built 1947 Load: 30.1 t ADT: 28,000
CENTERVILLE RD
FairOver: NORTH FORK PIT RIVER
0.4 MI S OF CARLOS ST., Modoc, CA
Built 1958 Load: 30.1 t ADT: 1,300
PANCHO RICO RD
FairOver: PANCHO RICO CREEK
4.5 MI E SARGENT RD, Monterey, CA
Built 1982 Load: 30.1 t ADT: 60
SKYLINE FOREST DR
FairOver: SCENIC DRIVE
NEAR SH 68, Monterey, CA
Built 1965 Load: 30.1 t ADT: 4,300
PRATT AVENUE
FairOver: NAPA RIVER
0.1 MI S SILVERADO TRAIL, Napa, CA
Built 1921 Load: 30.1 t ADT: 1,106
LYON AVENUE
FairOver: STETSON CHANNEL
25' N/O STETSON AVENUE, Riverside, CA
Built 1975 Load: 30.1 t ADT: 4,000
US 50 (I-305) WB
FairOver: 26TH STREET
03-SAC-050-L2.20-SAC, Sacramento, CA
Built 1968 Load: 30.1 t ADT: 123,000
DILLARD RD
FairOver: PASTURE CREEK
0.8 MI SW CLAY STA RD, Sacramento, CA
Built 1961 Load: 30.1 t ADT: 3,921
MARIPOSA AVENUE
FairOver: CRIPPLE CREEK
0.6 MI N ANTELOPE RD, Sacramento, CA
Built 1961 Load: 30.1 t ADT: 2,295
STATE ROUTE 156
FairOver: PACHECO CREEK
05-SBT-156-R17.28, San Benito, CA
Built 1966 Load: 30.1 t ADT: 12,100
INTERSTATE 40
FairOver: BLOOM WASH
08-SBD-040-R11.45, San Bernardino, CA
Built 1968 Load: 30.1 t ADT: 19,500
INTERSTATE 40
FairOver: LAVA WASH
08-SBD-040-R14.61, San Bernardino, CA
Built 1968 Load: 30.1 t ADT: 19,500
INTERSTATE 40
FairOver: LAVA WASH
08-SBD-040-R14.61, San Bernardino, CA
Built 1968 Load: 30.1 t ADT: 19,500
NATIONAL AVE
FairOver: CHOLLAS CREEK
0.2MI E/O 32ND ST, San Diego, CA
Built 1976 Load: 30.1 t ADT: 13,000
STATE ROUTE 1
FairOver: TUNITAS CREEK
04-SM-001-20.82, San Mateo, CA
Built 1962 Load: 30.1 t ADT: 6,000
U.S. HIGHWAY 101
FairOver: REDWOOD CREEK
04-SM-101-6.20-RDWC, San Mateo, CA
Built 1958 Load: 30.1 t ADT: 195,000
ALMADEN EXPWY
FairOver: GUADALUPE RIVER
JUST S/O OLD ALMADEN RD, Santa Clara, CA
Built 1961 Load: 30.1 t ADT: 40,560
INTERSTATE 5
FairOver: HILLSIDE
02-SHA-005-62.63, Shasta, CA
Built 1960 Load: 30.1 t ADT: 9,000
STATE ROUTE 49
FairOver: NORTH YUBA RIVER
03-SIE-049-R3.72, Sierra, CA
Built 1964 Load: 30.1 t ADT: 600
INTERSTATE 5 NB
FairOver: SOUTH WEED BLVD
02-SIS-005-R17.44, Siskiyou, CA
Built 1973 Load: 30.1 t ADT: 7,150
INTERSTATE 780 WB
FairOver: ACCESS ROAD
04-SOL-780-1.23-BEN, Solano, CA
Built 1962 Load: 30.1 t ADT: 23,500
ASCOT PKWY
FairOver: BLUE ROCK SPRINGS CREEK
0.4 MI S REDWOOD PKWY, Solano, CA
Built 1987 Load: 30.1 t ADT: 9,299
UDELL ROAD
FairOver: PUTAH SOUTH CANAL
0.1 MI E PADDON RD, Solano, CA
Built 1956 Load: 30.1 t ADT: 423
SALMON CREEK RD
FairOver: COLEMAN VALLEY CREEK
1.3 MI W FITZPATRICK RD, Sonoma, CA
Built 1973 Load: 30.1 t ADT: 80
NIESTRATH RD
FairOver: SOUTH FORK GUALALA RIVER
JUST N FORT ROSS RD, Sonoma, CA
Built 1971 Load: 30.1 t ADT: 50
SANFORD ROAD
FairOver: E BR LAGUNA DE SANTA RSA
0.4 MI N OCCIDENTAL RD, Sonoma, CA
Built 1997 Load: 30.1 t ADT: 2,700
CAZADERO HWY
FairOver: HILLSIDE
3.2 MI N/O SR 116, Sonoma, CA
Built 2005 Load: 30.1 t ADT: 1,450
Showing 11,751-11,800 of 27,040 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.