Total Bridges
27,040
Public highway bridges in California
State profile · Below median Poor share
California bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
Data updated May 2026
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges whose lowest applicable component is rated 0-4
-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 - Poor-condition share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.
OH
Ohio
4.54% top marginal rate
NJ
New Jersey
4.59% top marginal rate
CA
California
4.60% top marginal rate
AR
Arkansas
4.71% top marginal rate
WA
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: 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
NIPOMO ST
GoodOver: SAN LUIS OBISPO CREEK
0.1 MI N HIGUERA ST, San Luis Obispo, CA
Built 1994 Load: 32.4 t ADT: 4,371
MILL STREET
GoodOver: UP RR & AMTRAK
NE PEPPER ST, San Luis Obispo, CA
Built 1978 Load: 32.4 t ADT: 3,276
OSO VALLEY RD
GoodOver: SAN LUIS OBISPO CREEK
0.1 MI E SR 101, San Luis Obispo, CA
Built 1987 Load: 32.4 t ADT: 19,452
HIGUERA STREET
GoodOver: SAN LUIS OBISPO CREEK
HIGUERA, OSO, COURT ST, San Luis Obispo, CA
Built 1918 Load: 32.4 t ADT: 7,907
TANK FARM RD
GoodOver: TANK FARM DITCH
AT HOLLYHOCK ROAD, San Luis Obispo, CA
Built 1988 Load: 32.4 t ADT: 8,803
ONTARIO ROAD
GoodOver: SAN LUIS OBISPO CREEK
0.3 MI N AVILA ROAD, San Luis Obispo, CA
Built 1994 Load: 32.4 t ADT: 1,620
SODA LAKE RD
GoodOver: DRAINAGE CHANNEL
1.5 MILES SOUTH OF SR 58, San Luis Obispo, CA
Built 1987 Load: 32.4 t ADT: 202
LINNE RD
GoodOver: HUER HUERO CREEK
4 MI E US101, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 1,568
UPPER LOS BERROS R
GoodOver: LOS BERROS CREEK
1 MI NE DANA FOOTHILL, San Luis Obispo, CA
Built 2000 Load: 32.4 t ADT: 328
CENTURY LANE
GoodOver: LOS BERROS CREEK
JEO LOS BANOS RD, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 250
CANET ROAD
GoodOver: CHORRO CREEK
0.3 MI SW OF SR 1, San Luis Obispo, CA
Built 2000 Load: 32.4 t ADT: 150
FOOTHILL BLVD
GoodOver: STENNER CREEK
0.1MI EAST OF SR 1, San Luis Obispo, CA
Built 2005 Load: 32.4 t ADT: 5,000
LEWIS AVE
GoodOver: ATASCADERO CREEK
0.2 MI WEST OF SR 41, San Luis Obispo, CA
Built 2007 Load: 32.4 t ADT: 500
PICACHIO ROAD
GoodOver: CAYUCOS CREEK
1.9 MI N OF CAYUCOS, San Luis Obispo, CA
Built 2007 Load: 32.4 t ADT: 100
BELLO STREET
GoodOver: PISMO CREEK
INTERSECTS FRADY LANE, San Luis Obispo, CA
Built 2022 Load: 32.4 t ADT: 1,000
MARSH STREET
GoodOver: SAN LUIS OBISPO CREEK
SANTA ROSA ST & OSOS ST, San Luis Obispo, CA
Built 2021 Load: 32.4 t ADT: 9,463
FERRASCI ROAD
GoodOver: SANTA ROSA CREEK
.1 MI E. OF S.ROSA CRK RD, San Luis Obispo, CA
Built 2011 Load: 32.4 t ADT: 150
MAIN STREET
GoodOver: SANTA ROSA CREEK
SE OF SANTA ROSA CREEK RD, San Luis Obispo, CA
Built 2014 Load: 32.4 t ADT: 3,509
BRANCH MILL ROAD
GoodOver: TAR SPRING CREEK
0.2 MI S OF HUASNA ROAD, San Luis Obispo, CA
Built 2015 Load: 32.4 t ADT: 1,240
POINSETTIA STREET
GoodOver: E FK SAN LUIS OBISPO CRK
JEO ALYSSUM CT, San Luis Obispo, CA
Built 1986 Load: 32.4 t ADT: 1,100
EAST TEFFT STREET
GoodOver: EAST BRANCH NIPOMO CREEK
AT AVOCADO AVENUE, San Luis Obispo, CA
Built 2009 Load: 32.4 t ADT: 1,000
POINSETTIA STREET
GoodOver: E FK SAN LUIS OBISPO CK
JEO ROSEMARY CT, San Luis Obispo, CA
Built 1990 Load: 32.4 t ADT: 150
SPANISH OAKS DRIVE
GoodOver: E FK SAN LUIS OBISPO CK
JEO WAVERTREE STREET, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 300
ORCUTT ROAD
GoodOver: E FK SAN LUIS OBISPO CK
AT SPANISH OAKS DRIVE, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 2,200
LARKSPUR LANE
GoodOver: E FK SAN LUIS OBISPO CK
JNO GOLDENROD LN, San Luis Obispo, CA
Built 1987 Load: 32.4 t ADT: 150
CYPRESS MT DR
GoodOver: KLAU CREEK
1.75 MI SW KLAU, San Luis Obispo, CA
Built 2017 Load: 32.4 t ADT: 109
AIR PARK DRIVE
GoodOver: OCEANO BEACH LAGOON
0.1 MILE SE OF PIER AVIE, San Luis Obispo, CA
Built 2018 Load: 32.4 t ADT: 600
MORRETTI CANYON RD
GoodOver: PIEDRA VILLA CREEK
E OF ORCUTT ROAD, San Luis Obispo, CA
Built 2015 Load: 32.4 t ADT: 1,000
GENESEO ROAD
GoodOver: HUER HUERO CREEK
E OF EAGLE OAK RANCH WAY, San Luis Obispo, CA
Built 2019 Load: 32.4 t ADT: 2,000
MALLAGH STREET
GoodOver: EAST BRANCH NIPOMO CREEK
NW OF TEFFE STREET, San Luis Obispo, CA
Built 2007 Load: 32.4 t ADT: 1,500
HUASNA TOWNSITE RD
GoodOver: HUASNA RIVER
3.1 MI SE OF HUASNA, San Luis Obispo, CA
Built 2023 Load: 32.4 t ADT: 380
CHIMNEY ROCK ROAD
GoodOver: FRANKLIN CREEK
1.8 MI NE OF MADRONA ROAD, San Luis Obispo, CA
Built 2023 Load: 32.4 t ADT: 100
HIGHLAND DR
GoodOver: BRIZZOLARA CREEK
CAL STATE POLYTECHNIC UNI, San Luis Obispo, CA
Built 1972 Load: 32.4 t ADT: 8,800
HIGHLAND DR
GoodOver: STENNER CREEK
CAL STATE POLYTECHNIC UNI, San Luis Obispo, CA
Built 1972 Load: 32.4 t ADT: 8,800
VILLAGE DRIVE
GoodOver: BRIZZOLARA CREEK
CAL STATE POLYTECHNIC UNI, San Luis Obispo, CA
Built 2006 Load: 32.4 t ADT: 5,000
WASHBURN CAMPGROUN
GoodOver: WASHBURN CAMPGROUND
SLO COUNTY, San Luis Obispo, CA
Built 1984 Load: 32.4 t ADT: 50
3RD AVE-N101 ON RP
GoodOver: SAN MATEO CREEK
04-SM-101-13.44-SM, San Mateo, CA
Built 2004 Load: 32.4 t ADT: 15,000
N101-3RD AV OFFRMP
GoodOver: SAN MATEO CREEK
04-SM-101-13.44-SM, San Mateo, CA
Built 2004 Load: 32.4 t ADT: 20,000
U.S. HIGHWAY 101
GoodOver: PULGAS CREEK
04-SM-101-7.66-SCAR, San Mateo, CA
Built 2001 Load: 32.4 t ADT: 195,000
S101-3RD AVE OFFRP
GoodOver: SAN MATEO CREEK
04-SM-101-13.45-SM, San Mateo, CA
Built 1996 Load: 32.4 t ADT: 14,400
STATE ROUTE 1 SB
GoodOver: PILARCITOS CREEK
04-SM-001-28.92-HMBY, San Mateo, CA
Built 1954 Load: 32.4 t ADT: 14,750
STATE ROUTE 1 NB
GoodOver: PILARCITOS CREEK
04-SM-001-28.92-HMBY, San Mateo, CA
Built 1954 Load: 32.4 t ADT: 14,750
STATE ROUTE 1
GoodOver: LAKESHIRE DRIVE
04-SM-001-R46.86-DLC, San Mateo, CA
Built 1972 Load: 32.4 t ADT: 65,000
S280-SAN BRUNO OFF
GoodOver: INTERSTATE 380 (FUTURE)
04-SM-280-R20.98-SBR, San Mateo, CA
Built 1973 Load: 32.4 t ADT: 5,785
U.S. HIGHWAY 101
GoodOver: NORTH CHANNEL
04-SM-101-R20.63, San Mateo, CA
Built 1976 Load: 32.4 t ADT: 188,000
STATE ROUTE 84
GoodOver: PEDESTRIAN WALKWAY
04-SM-084-R27.62-MLP, San Mateo, CA
Built 1983 Load: 32.4 t ADT: 27,500
U.S. HIGHWAY 101
GoodOver: OYSTER POINT DRAIN
04-SM-101-22.90-SSF, San Mateo, CA
Built 1995 Load: 32.4 t ADT: 196,000
INTERSTATE 280
GoodOver: HILLSIDE
04-SM-280-R21.55, San Mateo, CA
Built 1994 Load: 32.4 t ADT: 101,000
STATE ROUTE 1
GoodOver: DEVIL SLIDE
04-SM-001-R39.93-PFA, San Mateo, CA
Built 2009 Load: 32.4 t ADT: 14,500
STATE ROUTE 1
GoodOver: DEVIL SLIDE
04-SM-001-R39.93-PFA, San Mateo, CA
Built 2009 Load: 32.4 t ADT: 14,500
Showing 22,801-22,850 of 27,040 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.