State profile · Below median Poor share

California bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in California.

25,848
Public bridges
45.6%
Good condition
5.9%
Poor condition

California holds 25,848 public highway bridges (#4 of 52 by inventory) with a 5.91% Poor share (#28 of 52 by Poor share).

That is 5.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 25 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

25,848

Public highway bridges in California

Good Condition

45.6%

11,798 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

5.9%

1,527 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.5%

California vs national bridge condition

California - Good condition share 45.6%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 19.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

California in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

California vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

25,848 4th of 54 higher than 50 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for California

The highlighted point is California: 25,848 bridges and 5.91% in Poor condition, rank #25 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below California on that same Poor-share ordering:

  • Arkansas: 12,974 bridges · 5.43% Poor
  • Washington: 8,474 bridges · 5.45% Poor
  • California: 25,848 bridges · 5.91% Poor
  • New Jersey: 6,827 bridges · 6.01% Poor
  • Mississippi: 16,739 bridges · 6.03% Poor

The full national sortable table lives on the rankings page.

Material families in California

Exclusive FHWA material families across all 25,848 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains California’s inventory

State agency holds 48.8% of the 25,848 public highway bridges filed under California in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When California’s bridges were built

Pre-1950 construction accounts for 15.5% of the 25,848 bridges with a recorded original year in California. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

California45.6%48.4%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 658 Alpine 32 Amador 61 Butte 437 Calaveras 105 Colusa 211 Contra Costa 618 Del Norte 96 El Dorado 192 Fresno 916 Glenn 242 Humboldt 396 Imperial 444 Inyo 66 Kern 668 Kings 168 Lake 129 Lassen 108 Los Angeles 3547 Madera 247 Marin 207 Mariposa 109 Mendocino 357 Merced 528 Modoc 87 Mono 49 Monterey 377 Napa 158 Nevada 135 Orange 1164 Placer 337 Plumas 165 Riverside 1117 Sacramento 740 San Benito 76 San Bernardino 1422 San Diego 1632 San Francisco 143 San Joaquin 644 San Luis Obispo 401 San Mateo 361 Santa Barbara 418 Santa Clara 964 Santa Cruz 192 Shasta 492 Sierra 65 Siskiyou 421 Solano 373 Sonoma 609 Stanislaus 386 Sutter 121 Tehama 450 Trinity 194 Tulare 589 Tuolumne 125 Ventura 501 Yolo 271 Yuba 127

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.

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

WA

Washington

5.45% top marginal rate
Structure
Progressive
Burden @ $100K
$8,474
Selected

CA

California

5.91% top marginal rate
Structure
Progressive
Burden @ $100K
$25,848

NJ

New Jersey

6.01% top marginal rate
Structure
Progressive
Burden @ $100K
$6,827

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

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.

OLD COTTONWOOD CR

Poor

Over: COTTONWOOD CREEK

0.2 MI E/O COTTONWOOD CK, Siskiyou, CA

Built 1957 Load: 0.0 t ADT: 10

STATE ROUTE 211

Poor

Over: EEL RIVER

01-HUM-211-78.10, Humboldt, CA

Built 1911 Load: 0.0 t ADT: 5,300

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 Load: 0.0 t ADT: 100

CR 111 (PITTVILLE)

Poor

Over: BEAVER CREEK

1.0 MI S OF CR 404, Lassen, CA

Built 1975 Load: 0.0 t ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 Load: 0.0 t ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 Load: 0.0 t ADT: 200

All Bridges in California

SKYWAY RD EB

Poor

Over: BUTTE CREEK

0.5 MI SE HUMBUG RD, Butte, CA

Built 1978 Load: 48.3 t ADT: 12,054

MARSHALL PETLUM RD

Poor

Over: SALMON CREEK

3.0MI W OF HICKSVALLEY RD, Marin, CA

Built 1931 Load: 48.3 t ADT: 328

COTTAGE AVE

Poor

Over: STATE ROUTE 99

10-SJ-099-7.46-MTCA, San Joaquin, CA

Built 1955 Load: 48.3 t ADT: 5,400

WALSH AVE

Poor

Over: SAN TOMAS AQUINO CREEK

NEAR SAN TOMAS EXPWY, Santa Clara, CA

Built 1973 Load: 48.3 t ADT: 18,000

GROVE STREET

Poor

Over: STATE ROUTE 94

11-SD-094-9.26-LMGR, San Diego, CA

Built 1957 Load: 48.6 t ADT: 2,040

INTERSTATE 5 NB

Poor

Over: PARADISE CUT UC

10-SJ-005-R13.87, San Joaquin, CA

Built 1971 Load: 48.9 t ADT: 80,000

RAMP/CONNECTOR 101

Poor

Over: S BR ARROYO CONEJO(OFF)

07-VEN-101-6.92-THOK, Ventura, CA

Built 1967 Load: 48.9 t ADT: 4,951

STATE ROUTE 55

Poor

Over: LINCOLN AVE

12-ORA-055-16.98-ORA, Orange, CA

Built 1961 Load: 48.9 t ADT: 227,000

AYERS ROAD

Poor

Over: MOUNT DIABLO CREEK

0.3 MI N CLAYTON RD, Contra Costa, CA

Built 1987 Load: 49.2 t ADT: 8,000

LEININGER RD

Poor

Over: JUNIPER GULCH

1.4 MI N/O ORCHARD RD, Tehama, CA

Built 1975 Load: 49.6 t ADT: 232

STATE ROUTE 84

Poor

Over: CALTRAIN UP RR SHASTA ST

04-SM-084-24.86-RDWC, San Mateo, CA

Built 1965 Load: 49.6 t ADT: 43,000

INTERSTATE 280 NB

Poor

Over: SAN FRANCISQUITO CREEK

04-SM-280-R0.30, San Mateo, CA

Built 1969 Load: 49.6 t ADT: 46,500

WATER ST

Poor

Over: SAN JOSE CR

0.6MI N/O SR-60 FWY, Los Angeles, CA

Built 1967 Load: 49.6 t ADT: 184

W MISSION BAY DR

Poor

Over: INGRAHAM STREET

0.75MI N/O I-8, San Diego, CA

Built 1972 Load: 49.6 t ADT: 22,000

FOREST ROAD 452

Poor

Over: HARE CREEK

WEST OF JCT FOREST RD 400, Mendocino, CA

Built 1997 Load: 49.9 t ADT: 10

INTERSTATE 280 NB

Poor

Over: FARM HILL BOULEVARD

04-SM-280-R4.65-WDS, San Mateo, CA

Built 1969 Load: 49.9 t ADT: 44,500

STATE ROUTE 126

Poor

Over: POLE CREEK

07-VEN-126-21.97-FIL, Ventura, CA

Built 1981 Load: 50.2 t ADT: 30,000

STATE ROUTE 86 NB

Poor

Over: AMEROSA DITCH

11-IMP-086-57.33, Imperial, CA

Built 1981 Load: 50.2 t ADT: 7,300

STATE ROUTE 24

Poor

Over: EBMUD AQUEDUCT

04-CC-024-R6.75-LFYT, Contra Costa, CA

Built 1957 Load: 50.5 t ADT: 79,500

WASHINGTON AVE

Poor

Over: SAN LORENZO CREEK

S LEWELLING BLVD, Alameda, CA

Built 1954 Load: 50.5 t ADT: 31,700

MTN VIEW-ALVISO RD

Poor

Over: SAN TOMAS AQUINO CREEK

JUST SOUTH OF SH 237, Santa Clara, CA

Built 1973 Load: 50.5 t ADT: 5,291

INLAND CENTER DR

Poor

Over: LYTLE CREEK-EAST BRANCH

0.2 MI SW JT MILL ST E ST, San Bernardino, CA

Built 1973 Load: 50.5 t ADT: 8,702

MCKINLEY ROAD

Poor

Over: NORTH LITTLE JOHNS CREEK

0.04 MI N INDUSTRIAL DR, San Joaquin, CA

Built 1972 Load: 50.9 t ADT: 4,300

PICACHO RD

Poor

Over: RESERVATION MAIN DRAIN

370 FT N/O QUECHAN RD, Imperial, CA

Built 1977 Load: 50.9 t ADT: 4,700

YOSEMITE DRIVE

Poor

Over: INTERSTATE 680

04-SCL-680-M6.98-MPS, Santa Clara, CA

Built 1974 Load: 51.2 t ADT: 11,717

21ST ST

Poor

Over: EAST TWIN CREEK CHANNEL

0.55 MI E WATERMAN AVE, San Bernardino, CA

Built 1961 Load: 51.2 t ADT: 5,700

CUYAMACA ST.

Poor

Over: SAN DIEGO RIVER

0.5M N/O MISSION GORGE RD, San Diego, CA

Built 1974 Load: 51.2 t ADT: 26,648

STATE ROUTE 4 WB

Poor

Over: SPBR & GARFIELD AVE

10-SJ-004-R15.67-STKN, San Joaquin, CA

Built 1972 Load: 51.5 t ADT: 13,250

LOS ALISOS BLVD

Poor

Over: ALISO CREEK

0.29 MI. S/O MUIRLAND BL., Orange, CA

Built 1973 Load: 51.5 t ADT: 45,250

INTERSTATE 280

Poor

Over: FARM HILL BOULEVARD

04-SM-280-R4.65-WDS, San Mateo, CA

Built 1969 Load: 51.8 t ADT: 50,000

E ANNADALE AVE

Poor

Over: C & K CANAL

WEST OF NEWMARK AVE, Fresno, CA

Built 1969 Load: 51.8 t ADT: 2,982

STATE ROUTE 20

Poor

Over: RUSSIAN RIV NCRA/NWP RR

01-MEN-020-33.63, Mendocino, CA

Built 1958 Load: 52.2 t ADT: 11,500

E CENTRAL AVE

Poor

Over: C & K CANAL

0.01 MI W OF NEWMARK AVE, Fresno, CA

Built 1925 Load: 52.2 t ADT: 1,434

AVENUE OF THE STAR

Poor

Over: OLYMPIC BLVD

AT OLYMPIC BLVD, Los Angeles, CA

Built 1963 Load: 52.2 t ADT: 30,223

PEARBLOSSOM HWY

Poor

Over: SPRR

2.0MI N/O SR-14 FWY, Los Angeles, CA

Built 1959 Load: 52.2 t ADT: 40,280

VALLEY BLVD

Poor

Over: NOGALES ST

0.5MI N/O I-60 FWY, Los Angeles, CA

Built 2005 Load: 52.2 t ADT: 40,898

STATE ROUTE 86 NB

Poor

Over: VERDE DITCH

11-IMP-086-57.68, Imperial, CA

Built 1981 Load: 52.2 t ADT: 7,300

HETZEL ROAD

Poor

Over: SALT CREEK

0.55 MI W/O HUFF RD, Imperial, CA

Built 1978 Load: 52.2 t ADT: 318

AVE S E

Poor

Over: RR

2MI E/O SIERRA HWY, Los Angeles, CA

Built 2007 Load: 52.5 t ADT: 28,154

MADERA ROAD

Poor

Over: ARROYO SIMI

0.5 MI S OF SR 118, Ventura, CA

Built 1979 Load: 52.8 t ADT: 30,000

INTERSTATE 280

Poor

Over: SOUTHGATE AVENUE

04-SM-280-R25.04-DLC, San Mateo, CA

Built 1967 Load: 53.1 t ADT: 178,000

HENRY MILLER AVE

Poor

Over: LOS BANOS CREEK

0.3 MI W BADGER FLAT ROAD, Merced, CA

Built 1985 Load: 53.1 t ADT: 1,870

AVE OF THE FLAGS

Poor

Over: SANTA YNEZ RIVER

0.6 MI SOUTH OF SR 246, Santa Barbara, CA

Built 1949 Load: 53.5 t ADT: 3,000

PINE FLAT RD

Poor

Over: SAUSAL CREEK

0.63 MI NE OF SR 128, Sonoma, CA

Built 1974 Load: 53.8 t ADT: 100

NOGALES ST

Poor

Over: SAN JOSE CRK

0.1MI S/O VALLEY BLVD, Los Angeles, CA

Built 1968 Load: 53.8 t ADT: 40,898

PICACHO RD

Poor

Over: RESERVATION MAIN DRAIN

0.75 MI S/O ROSS RD, Imperial, CA

Built 1974 Load: 53.8 t ADT: 3,000

PRKFLD COALINGA RD

Poor

Over: LITTLE CHOLAME CREEK

3 MI N VINEYARD CANYON RD, Monterey, CA

Built 1971 Load: 54.1 t ADT: 240

WILTON PLACE

Poor

Over: ROUTE 101

07-LA-101-6.15-LA, Los Angeles, CA

Built 1951 Load: 54.1 t ADT: 20,000

GENTRY RD

Poor

Over: NEW RIVER

1.3 MI S/0 VAIL RD, Imperial, CA

Built 1978 Load: 54.1 t ADT: 900

MARIPOSA ST

Poor

Over: CALTRAIN & UP RR

AT SR 280, San Francisco, CA

Built 1968 Load: 54.4 t ADT: 20,000

Showing 25,751-25,800 of 25,848 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

What to do with this

Use California's inventory picture to drill to a county or a specific span.

  • Browse counties in California and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. California Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.