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 505
FairOver: SOUTH FORK WILLOW SLOUGH
03-YOL-505-10.33, Yolo, CA
Built 1959 Load: 27.2 t ADT: 6,000
INTERSTATE 505
FairOver: SOUTH FORK WILLOW SLOUGH
03-YOL-505-10.33, Yolo, CA
Built 1959 Load: 27.2 t ADT: 6,000
COUNTY ROAD 17
FairOver: SLOUGH S7
0.13 MI WEST OF CR 95A, Yolo, CA
Built 1930 Load: 27.2 t ADT: 580
S680-BERNAL AV OFF
FairOver: BERNAL AVE
04-ALA-680-R16.75-PLE, Alameda, CA
Built 1967 Load: 27.5 t ADT: 1,950
STATE ROUTE 4S
FairOver: ANGELS CREEK
10-CAL-004S-21.41-ANG, Calaveras, CA
Built 1946 Load: 27.5 t ADT: 7,900
COLLEGE CITY ROAD
FairOver: NORTH FORK BRUSH CREEK
2.5 MI S OF TULE RD, Colusa, CA
Built 1972 Load: 27.5 t ADT: 402
GOAT MOUNTAIN ROAD
FairOver: SULLIVAN CREEK
4.9 MI W LODOGA-STNYFD RD, Colusa, CA
Built 1970 Load: 27.5 t ADT: 16
WILBUR SPRINGS RD
FairOver: BEAR CREEK
JCT WITH BEAR VALLEY RD, Colusa, CA
Built 2007 Load: 27.5 t ADT: 63
PLACERVILLE DR
FairOver: HANGTOWN CREEK
0.3 MI W COLD SPRINGS RD, El Dorado, CA
Built 1931 Load: 27.5 t ADT: 20,000
ICE HOUSE RD
FairOver: SOUTH FORK RUBICON RIVER
23.6 MI FROM US 50, El Dorado, CA
Built 1964 Load: 27.5 t ADT: 300
OLD KINGSTON GRADE
FairOver: GRANT CANAL
0.25 MI S/O MT WHITNEY AV, Fresno, CA
Built 1949 Load: 27.5 t ADT: 100
W CERINI AVENUE
FairOver: CRESCENT DITCH
1.0 MI WEST OF MADERA AVE, Fresno, CA
Built 1945 Load: 27.5 t ADT: 120
ROAD 65
FairOver: SHOAT DRAW
0.5 MI W/O ROAD 'D', Glenn, CA
Built 1948 Load: 27.5 t ADT: 168
STATE ROUTE 36
FairOver: BUTTE CREEK
01-HUM-036-34.52, Humboldt, CA
Built 1960 Load: 27.5 t ADT: 1,200
ACCESS ROAD TO CDF
FairOver: BROWNS CREEK
NE OFKNEELAND,BRIDGEVILLE, Humboldt, CA
Built 2012 Load: 27.5 t ADT: 12
STATE ROUTE 58
FairOver: CALIENTE CREEK OVERFLOW
06-KER-058-67.85, Kern, CA
Built 1960 Load: 27.5 t ADT: 10,000
STATE ROUTE 58
FairOver: CALIENTE CREEK OVERFLOW
06-KER-058-67.85, Kern, CA
Built 1960 Load: 27.5 t ADT: 13,000
DOYLE RANCH RD
FairOver: SOUTH FORK KERN RIVER
0.1 MI N OF RTE 178, Kern, CA
Built 1968 Load: 27.5 t ADT: 140
GOSFORD ROAD SB
FairOver: KERN RIVER CANAL
0.2 MI S TRUXTUN AVE, Kern, CA
Built 1984 Load: 27.5 t ADT: 17,700
E60-N57 CONNECTOR
FairOver: PROSPECTORS ROAD
07-LA-060-R25.36-DMBR, Los Angeles, CA
Built 1970 Load: 27.5 t ADT: 71,400
E210-S57 CONNECTOR
FairOver: LACMTA & BNSF RY
07-LA-210-R44.04-GDR, Los Angeles, CA
Built 1970 Load: 27.5 t ADT: 95,000
MLK Jr. St.
FairOver: PRIVATE DRN #212
0.1MI E/O MAIN ST, Los Angeles, CA
Built 1967 Load: 27.5 t ADT: 6,120
N99-AVE 12 OFFRAMP
FairOver: COTTONWOOD CREEK
06-MAD-099-R7.28, Madera, CA
Built 1967 Load: 27.5 t ADT: 1,650
ROAD 14
FairOver: BERENDA SLOUGH
0.3 MI S OF AVE 21, Madera, CA
Built 1968 Load: 27.5 t ADT: 224
GRAND AVE
FairOver: SAN RAFAEL CREEK
500 FT E OF US HWY 101, Marin, CA
Built 1965 Load: 27.5 t ADT: 19,800
OLD YOSEMITE ROAD
FairOver: NORTH FORK MERCED RIVER
1.3 MI EAST JORDAN CRK RD, Mariposa, CA
Built 1950 Load: 27.5 t ADT: 190
STATE ROUTE 271
FairOver: HILLSIDE ABOVE RIVER
01-MEN-271-18.39, Mendocino, CA
Built 1947 Load: 27.5 t ADT: 95
US HIGHWAY 101 SB
FairOver: NCRA/NWP RR & NORGARD LN
01-MEN-101-R22.16, Mendocino, CA
Built 1964 Load: 27.5 t ADT: 10,450
US HIGHWAY 101 NB
FairOver: NCRA/NWP RR & NORGARD LN
01-MEN-101-R22.16, Mendocino, CA
Built 1964 Load: 27.5 t ADT: 10,450
LAYTNVLLE-DOS RIOS
FairOver: BURGER CREEK
4.8 MI E/O JCT US 101, Mendocino, CA
Built 1888 Load: 27.5 t ADT: 137
STATE ROUTE 99 SB
FairOver: ASHE DRAIN
10-MER-099-18.59, Merced, CA
Built 1947 Load: 27.5 t ADT: 28,000
STATE ROUTE 99 NB
FairOver: ASHE DRAIN
10-MER-099-18.59, Merced, CA
Built 1947 Load: 27.5 t ADT: 28,000
U.S. HIGHWAY 395
FairOver: PARKER CREEK
02-MOD-395-26.71, Modoc, CA
Built 1954 Load: 27.5 t ADT: 4,000
STATE ROUTE 57
FairOver: BNSF RY SPUR TRACK
12-ORA-057-16.63-PLCN, Orange, CA
Built 1969 Load: 27.5 t ADT: 271,000
WARNER VALLEY RD
FairOver: WARNER CREEK
9.1 MI NW OF SH 36, Plumas, CA
Built 1956 Load: 27.5 t ADT: 60
INTERSTATE 10 WB
FairOver: GARNET CREEK
08-RIV-010-32.00, Riverside, CA
Built 1955 Load: 27.5 t ADT: 42,500
INTERSTATE 10 EB
FairOver: GARNET CREEK
08-RIV-010-32.35, Riverside, CA
Built 1955 Load: 27.5 t ADT: 42,500
INTERSTATE 10 WB
FairOver: WEST BURIED MTN WASH
08-RIV-010-R77.97, Riverside, CA
Built 1965 Load: 27.5 t ADT: 11,250
INTERSTATE 10 EB
FairOver: SADDLE GULCH
08-RIV-010-R79.58, Riverside, CA
Built 1965 Load: 27.5 t ADT: 11,250
WINDBRIDGE DRIVE
FairOver: POCKET CANAL
NORTH OF POCKET ROAD, Sacramento, CA
Built 1986 Load: 27.5 t ADT: 4,529
INTERSTATE 40 WB
FairOver: BROADWELL WASH
08-SBD-040-R54.09, San Bernardino, CA
Built 1970 Load: 27.5 t ADT: 8,150
INTERSTATE 40 EB
FairOver: BROADWELL WASH
08-SBD-040-R54.09, San Bernardino, CA
Built 1970 Load: 27.5 t ADT: 8,150
MOUNTAIN AVE
FairOver: UP RR,AMTRAK,METROLINK,
0.1 MI S HOLT BLVD, San Bernardino, CA
Built 1970 Load: 27.5 t ADT: 30,247
ALESSANDRO RD
FairOver: SAN TIMOTEO CREEK
0.25 MI NE SAN TIMOTEO RD, San Bernardino, CA
Built 1927 Load: 27.5 t ADT: 4,400
MOUNT BALDY RD
FairOver: SAN ANTONIO CREEK
0.4 MI N/E LA-SBD CO LINE, San Bernardino, CA
Built 1973 Load: 27.5 t ADT: 1,500
INTERSTATE 8 EB
FairOver: CARRIZO CREEK
11-SD-008-R72.28, San Diego, CA
Built 1967 Load: 27.5 t ADT: 8,150
INTERSTATE 15 NB
FairOver: MESA ROCK RD
11-SD-015-R34.89, San Diego, CA
Built 1978 Load: 27.5 t ADT: 70,000
U.S. HIGHWAY 101
FairOver: CANDLESTICK PARK UC
04-SF-101-0.03-SF, San Francisco, CA
Built 1972 Load: 27.5 t ADT: 199,000
MARLETTE ROAD
FairOver: PIXLEY SLOUGH
S OF 8 MI RD, E OF RR TRK, San Joaquin, CA
Built 2007 Load: 27.5 t ADT: 2,000
STATE ROUTE 246
FairOver: ALAMO PINTADO CREEK
05-SB-246-30.32, Santa Barbara, CA
Built 1954 Load: 27.5 t ADT: 13,500
Showing 11,251-11,300 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.