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
BRADLEY ROAD
UnknownOver: US HIGHWAY 101
05-MON-101-R2.15, Monterey, CA
Built 1965 ADT: 19,000
STATE ROUTE 1 SB
UnknownOver: N1-MUNRAS AVE OFF RAMP
05-MON-001-R75.74-MON, Monterey, CA
Built 1968 ADT: 7,280
STATE ROUTE 1 NB
UnknownOver: N1-MUNRAS AVE OFF RAMP
05-MON-001-R75.74-MON, Monterey, CA
Built 1968 ADT: 7,280
STATE ROUTE 1 SB
UnknownOver: FREMONT ST-N1 & AGUAJITO
05-MON-001-R77.37-MON, Monterey, CA
Built 1968 ADT: 11,112
STATE ROUTE 1 NB
UnknownOver: FREMONT ST-N1 & AGUAJITO
05-MON-001-R77.37-MON, Monterey, CA
Built 1968 ADT: 11,112
W68-S1 & S1-E68 CN
UnknownOver: SR 1, S1-E68, N1-FREMONT
05-MON-068-R3.96-MON, Monterey, CA
Built 1968 ADT: 64,000
FAIRGROUND RD
UnknownOver: SR 68, N1-E68, W68-N1
05-MON-068-R4.04-MON, Monterey, CA
Built 1967 ADT: 26,000
N1-FREMONT ST OFF
UnknownOver: W68-N1 CONNECTOR RAMP
05-MON-001-R78.18-MON, Monterey, CA
Built 1968 ADT: 1,500
FREMONT ST-S1 ONRP
UnknownOver: SR 1 & W68-N1 CONN RMP
05-MON-001-R78.18-MON, Monterey, CA
Built 1968 ADT: 1,050
STATE ROUTE 1 SB
UnknownOver: DEL MONTE AVE
05-MON-001-R78.89-MON, Monterey, CA
Built 1968 ADT: 26,241
STATE ROUTE 1 NB
UnknownOver: DEL MONTE AVE
05-MON-001-R78.89-MON, Monterey, CA
Built 1968 ADT: 26,241
STATE ROUTE 1 SB
UnknownOver: S1-OFF, ELLIS RD, PEDS
05-MON-001-R80.67-SNDC, Monterey, CA
Built 1968 ADT: 5,000
STATE ROUTE 1 NB
UnknownOver: S1-OFF, ELLIS RD, PEDS
05-MON-001-R80.67-SNDC, Monterey, CA
Built 1968 ADT: 5,000
STATE ROUTE 1 SB
UnknownOver: STATE ROUTE 218
05-MON-001-R79.33-SEA, Monterey, CA
Built 1968 ADT: 9,200
STATE ROUTE 1 NB
UnknownOver: STATE ROUTE 218
05-MON-001-R79.33-SEA, Monterey, CA
Built 1968 ADT: 9,200
TIOGA AVE
UnknownOver: STATE ROUTE 1
05-MON-001-R80.09-SNDC, Monterey, CA
Built 1968 ADT: 59,000
ELM AVE
UnknownOver: US HIGHWAY 101
05-MON-101-53.11-GNFD, Monterey, CA
Built 1961 ADT: 38,000
STATE ROUTE 1 SB
UnknownOver: SLOAT AVENUE
05-MON-001-R77.59-MON, Monterey, CA
Built 1968 ADT: 7,800
STATE ROUTE 1 NB
UnknownOver: SLOAT AVENUE
05-MON-001-R77.59-MON, Monterey, CA
Built 1968 ADT: 7,800
ALVARADO ROAD
UnknownOver: US HIGHWAY 101
05-MON-101-R15.46, Monterey, CA
Built 1964 ADT: 14,300
LOS LOBOS RD
UnknownOver: US HIGHWAY 101
05-MON-101-R17.86, Monterey, CA
Built 1964 ADT: 17,400
N MAIN ST-S101 ON
UnknownOver: US 101, SR183, MAIN-N101
05-MON-101-R88.28-SAL, Monterey, CA
Built 1965 ADT: 22,500
1ST ST (CO RD G15)
UnknownOver: US HIGHWAY 101
05-MON-101-R39.77, Monterey, CA
Built 1968 ADT: 15,900
US HIGHWAY 101 SB
UnknownOver: CANAL STREET
05-MON-101-R40.72-KNC, Monterey, CA
Built 1968 ADT: 840
US HIGHWAY 101 NB
UnknownOver: CANAL STREET
05-MON-101-R40.72-KNC, Monterey, CA
Built 1968 ADT: 800
US HIGHWAY 101 SB
UnknownOver: JOLON RD (CO RD G14)
05-MON-101-R41.95L, Monterey, CA
Built 1968 ADT: 1,200
US HIGHWAY 101 NB
UnknownOver: JOLON RD (CO RD G14)
05-MON-101-R41.95R, Monterey, CA
Built 1968 ADT: 1,200
PARIS VALLEY RD
UnknownOver: U.S. HIGHWAY 101
05-MON-101-R28.14, Monterey, CA
Built 1971 ADT: 14,900
STATE ROUTE 183
UnknownOver: STATE ROUTE 156
05-MON-183-8.99, Monterey, CA
Built 1966 ADT: 29,850
STATE ROUTE 1 SB
UnknownOver: CASA VERDE AVE
05-MON-001-R78.45-MON, Monterey, CA
Built 1968 ADT: 8,320
STATE ROUTE 1 NB
UnknownOver: CASA VERDE AVE
05-MON-001-R78.45-MON, Monterey, CA
Built 1968 ADT: 8,320
STATE ROUTE 1 SB
UnknownOver: SOLEDAD DRIVE
05-MON-001-R76.00-MON, Monterey, CA
Built 1968 ADT: 19,600
STATE ROUTE 1 NB
UnknownOver: SOLEDAD DRIVE
05-MON-001-R76.00-MON, Monterey, CA
Built 1968 ADT: 20,580
BUNTE ROAD
UnknownOver: US HIGHWAY 101
05-MON-101-R35.83, Monterey, CA
Built 1969 ADT: 15,900
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 156
05-MON-156-R1.35, Monterey, CA
Built 1966 ADT: 29,172
US HIGHWAY 101 SB
UnknownOver: ST RTE 198 (@PM R0.11)
05-MON-101-R32.00, Monterey, CA
Built 1971 ADT: 2,350
US HIGHWAY 101 NB
UnknownOver: ST RTE 198 (@PM R0.11)
05-MON-101-R32.00, Monterey, CA
Built 1971 ADT: 2,350
UP RR & AMTRACK
UnknownOver: STATE ROUTE 198
05-MON-198-R0.70, Monterey, CA
Built 1971 ADT: 2,350
S1-OFF & ON-S1 RMP
UnknownOver: STATE ROUTE 1
05-MON-001-R82.89, Monterey, CA
Built 1973 ADT: 59,000
EIGHTH ST
UnknownOver: SR 1, ABANDONED RR ROW
05-MON-001-R83.89, Monterey, CA
Built 1973 ADT: 59,000
12TH ST/IMJIN PKWY
UnknownOver: STATE ROUTE 1
05-MON-001-R84.48, Monterey, CA
Built 1973 ADT: 59,000
STATE ROUTE 1 SB
UnknownOver: RR ROW, DEL MONTE BL-S1
05-MON-001-R85.14, Monterey, CA
Built 1976 ADT: 9,400
STATE ROUTE 1 NB
UnknownOver: RR ROW, DEL MONTE BL-S1
05-MON-001-R85.14, Monterey, CA
Built 1976 ADT: 9,400
STATE ROUTE 1 SB
UnknownOver: RESERVATION RD
05-MON-001-R86.48, Monterey, CA
Built 1976 ADT: 8,450
STATE ROUTE 1 NB
UnknownOver: RESERVATION RD
05-MON-001-R86.48, Monterey, CA
Built 1976 ADT: 8,400
DEL MONTE BLVD
UnknownOver: STATE ROUTE 1
05-MON-001-R88.64, Monterey, CA
Built 1976 ADT: 47,000
MOLERA RD
UnknownOver: SR 1, S1-MOLERA OFFRAMP
05-MON-001-R90.39, Monterey, CA
Built 1976 ADT: 600
STATE ROUTE 1 NB
UnknownOver: W156-S1 CONNECTOR RAMP
05-MON-001-R90.93, Monterey, CA
Built 1976 ADT: 8,200
DAVIS ROAD
UnknownOver: STATE ROUTE 183
05-MON-183-R1.96-SAL, Monterey, CA
Built 1983 ADT: 23,256
SAN MIGUEL CANYON
UnknownOver: U.S. HIGHWAY 101
05-MON-101-96.14, Monterey, CA
Built 2004 ADT: 83,700
Showing 3,401-3,450 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |