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
US 101,W&E BAYSHR
GoodOver: SAN FRANCISQUITO CREEK
04-SM-101-0.01-PA, San Mateo, CA
Built 2018 Load: 32.4 t ADT: 225,800
STATE ROUTE 1
GoodOver: SAN PEDRO CREEK
04-SM-001-40.83, San Mateo, CA
Built 2015 Load: 32.4 t ADT: 14,500
BROADWAY ON-RAMP
GoodOver: U.S. HIGHWAY 101
04-SM-101-16.58-BURL, San Mateo, CA
Built 2017 Load: 32.4 t ADT: 3,500
VERDI ROAD
GoodOver: PURISMA CREEK
0.1 MI S PURISMA CRK RD, San Mateo, CA
Built 1987 Load: 32.4 t ADT: 63
LOBITOS CREEK ROAD
GoodOver: LOBITOS CREEK
1.1 MI N/W VERDE RD, San Mateo, CA
Built 1991 Load: 32.4 t ADT: 73
MARINERS ISL BLVD
GoodOver: BRANCH MARINA LAGOON
0.1 MI W/O TILLER DR, San Mateo, CA
Built 1999 Load: 32.4 t ADT: 2,970
PENNSYLVANIA,UP RR
GoodOver: REDWOOD CREEK
WEST OF MAPLE ST, San Mateo, CA
Built 1989 Load: 32.4 t ADT: 100
ROAD-1 SOUTH
GoodOver: PEDESTRIAN WALKWAY
TERMINAL 1 - AREA B, San Mateo, CA
Built 1964 Load: 32.4 t ADT: 12,930
ROAD-1 SOUTH
GoodOver: PEDESTRIAN WALKWAY
TERMINAL 3 - AREA E, San Mateo, CA
Built 1973 Load: 32.4 t ADT: 12,930
THIRD AVENUE
GoodOver: SAN MATEO CREEK
0.3 MI N NORFOLK ST, San Mateo, CA
Built 1986 Load: 32.4 t ADT: 12,040
PORTOLA RD
GoodOver: CORTE MADERA CREEK
0.1 MI E WILLOWBROOK DR, San Mateo, CA
Built 1989 Load: 32.4 t ADT: 4,000
MIDDLEFIELD RD
GoodOver: REDWOOD CREEK
WEST OF MAPLE ST, San Mateo, CA
Built 1989 Load: 32.4 t ADT: 14,000
LOS TRANCOS RD
GoodOver: LOS TRANCOS CREEK
1.5 MI S ALPINE RD, San Mateo, CA
Built 1989 Load: 32.4 t ADT: 2,700
SERVICE ROAD
GoodOver: GUADALUPE CHANNEL
BAYSHORE BLVD @ OLD CNTY, San Mateo, CA
Built 2007 Load: 32.4 t ADT: 4,646
SOUTH AIRPORT BLVD
GoodOver: SAN BRUNO CANAL
NORTH OF NORTH ACCESS RD, San Mateo, CA
Built 2018 Load: 32.4 t ADT: 19,327
ROAD- 1 SOUTH
GoodOver: PEDESTRIAN WALKWAY
TERMINAL 3 AREA G, San Mateo, CA
Built 2001 Load: 32.4 t ADT: 12,930
U.S. HIGHWAY 101
GoodOver: ZACA CREEK
05-SB-101-R57.41, Santa Barbara, CA
Built 1965 Load: 32.4 t ADT: 21,000
US HIGHWAY 101 SB
GoodOver: GAVIOTA CREEK
05-SB-101-47.90, Santa Barbara, CA
Built 1987 Load: 32.4 t ADT: 16,000
US HIGHWAY 101 SB
GoodOver: DOS PUEBLOS CRK & CYN RD
05-SB-101-30.07, Santa Barbara, CA
Built 1993 Load: 32.4 t ADT: 16,000
STATE ROUTE 166
GoodOver: BUCKHORN CREEK
05-SB-166-R24.07, Santa Barbara, CA
Built 1969 Load: 32.4 t ADT: 2,700
STATE ROUTE 166
GoodOver: CUYAMA RIVER
05-SB-166-R69.94, Santa Barbara, CA
Built 1980 Load: 32.4 t ADT: 4,500
STATE ROUTE 154
GoodOver: ALAMO PINTADO CREEK
05-SB-154-R2.55, Santa Barbara, CA
Built 1971 Load: 32.4 t ADT: 9,550
STATE ROUTE 154
GoodOver: SAN ANTONIO CREEK
05-SB-154-30.21, Santa Barbara, CA
Built 1980 Load: 32.4 t ADT: 14,550
STATE ROUTE 1
GoodOver: EL JARO CREEK
05-SB-001-9.89, Santa Barbara, CA
Built 1994 Load: 32.4 t ADT: 6,900
STATE ROUTE 1
GoodOver: YTIAS CREEK
05-SB-001-10.11, Santa Barbara, CA
Built 1994 Load: 32.4 t ADT: 6,900
STATE ROUTE 192
GoodOver: SAN ROQUE CANYON
05-SB-192-1.77-SB, Santa Barbara, CA
Built 1984 Load: 32.4 t ADT: 12,300
STATE ROUTE 154
GoodOver: VEHICLE & CATTLE ACCESS
05-SB-154-18.83, Santa Barbara, CA
Built 1963 Load: 32.4 t ADT: 13,500
STATE ROUTE 154
GoodOver: SAN LUCAS CREEK
05-SB-154-R11.51, Santa Barbara, CA
Built 1968 Load: 32.4 t ADT: 14,500
STATE ROUTE 246
GoodOver: ZACA CREEK
05-SB-246-26.14, Santa Barbara, CA
Built 1965 Load: 32.4 t ADT: 16,000
PATTERSON-S101 ON
GoodOver: MARIA YGNACIO CREEK
05-SB-101-20.95, Santa Barbara, CA
Built 1997 Load: 32.4 t ADT: 49,500
US HIGHWAY 101 SB
GoodOver: MARIA YGNACIO CREEK
05-SB-101-20.95, Santa Barbara, CA
Built 1997 Load: 32.4 t ADT: 60,500
U.S. HIGHWAY 101
GoodOver: CARNEROS CREEK
05-SB-101-23.56, Santa Barbara, CA
Built 1945 Load: 32.4 t ADT: 65,000
U.S. HIGHWAY 101
GoodOver: GLEN ANNIE CREEK
05-SB-101-24.41, Santa Barbara, CA
Built 1946 Load: 32.4 t ADT: 65,000
STATE ROUTE 135
GoodOver: HARRIS CANYON CREEK
05-SB-135-M9.78, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,950
STATE ROUTE 135
GoodOver: HARRIS CANYON CREEK
05-SB-135-M9.98, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,950
STATE ROUTE 135
GoodOver: HARRIS CANYON CREEK
05-SB-135-M10.72, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 18,600
STATE ROUTE 1
GoodOver: VEHICLE ACCESS (PRIVATE)
05-SB-001-R32.01, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,800
STATE ROUTE 1
GoodOver: VEHICLE ACCESS (PRIVATE)
05-SB-001-R32.25, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,800
STATE ROUTE 1
GoodOver: VEHICLE ACCESS (PRIVATE)
05-SB-001-R33.98, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,800
STATE ROUTE 135
GoodOver: ORCUTT CREEK
05-SB-135-R10.37, Santa Barbara, CA
Built 1966 Load: 32.4 t ADT: 13,950
U.S. HIGHWAY 101
GoodOver: QUARANTINA STREET
05-SB-101-13.01-SB, Santa Barbara, CA
Built 1990 Load: 32.4 t ADT: 109,000
U.S. HIGHWAY 101
GoodOver: CALLE CESAR CHAVEZ
05-SB-101-13.14-SB, Santa Barbara, CA
Built 1990 Load: 32.4 t ADT: 109,000
US HIGHWAY 101 SB
GoodOver: MISSION CREEK
05-SB-101-13.96-SB, Santa Barbara, CA
Built 1990 Load: 32.4 t ADT: 54,500
STATE ROUTE 154
GoodOver: HILLSIDE
05-SB-154-29.60, Santa Barbara, CA
Built 2001 Load: 32.4 t ADT: 14,550
U.S. 101 NB ONRAMP
GoodOver: TECOLOTITO CREEK
05-SB-101-24.71, Santa Barbara, CA
Built 1997 Load: 32.4 t ADT: 1,500
U.S. HIGHWAY 101
GoodOver: CHAPALA ST EQUALIZER
05-SB-101-13.89-SB, Santa Barbara, CA
Built 1992 Load: 32.4 t ADT: 109,000
MAIN STREET
GoodOver: BRADLEY CHANNEL
05-SB-166-8.92-SMRA, Santa Barbara, CA
Built 1962 Load: 32.4 t ADT: 17,800
US HIGHWAY 101
GoodOver: CACIQUE STREET
05-SB-101-12.61, Santa Barbara, CA
Built 2012 Load: 32.4 t ADT: 10,000
S101-FAIRVIEW AVE
GoodOver: LAS VEGAS CREEK
05-SB-101-22.57, Santa Barbara, CA
Built 2016 Load: 32.4 t ADT: 3,250
U.S. ROUTE 101
GoodOver: CARPINTERIA CREEK
05-SB-101-2.43-CARP, Santa Barbara, CA
Built 2020 Load: 32.4 t ADT: 68,300
Showing 22,851-22,900 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 |