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

W. MAIN ST

Good

Over: CENTRAL MAIN CANAL

50 FT E/O AUSTIN RD, Imperial, CA

Built 1993 Load: 32.4 t ADT: 1,604

BRANDT RD

Good

Over: NEW RIVER

5.7 MI N/O SR 78 EXPWY, Imperial, CA

Built 2002 Load: 32.4 t ADT: 900

IRR BIA RTE 15

Good

Over: HOSTLER CREEK

3 KM NORTH OF HOOPA, Humboldt, CA

Built 1962 Load: 32.4 t ADT: 200

PARNUM ROAD (US20

Good

Over: North Fork Cache Creek

4.7 MILES NW OF CLEARLAKE, Lake, CA

Built 2021 Load: 32.4 t ADT: 1

16026: CASE MTN

Good

Over: East Fork Kaweah River

10 mi NW of Kaweah Rsvr, Tulare, CA

Built 2015 Load: 32.4 t ADT: 75

NO DATA ENTERED

Good

Over: NO DATA ENTERED

S21 T3S R8E, Trinity, CA

Built 1974 Load: 32.4 t ADT: 50

BASILONE ROAD

Good

Over: SAN ONOFRE CREEK

600 SE OF SAN JUAN RD, San Diego, CA

Built 1960 Load: 32.6 t ADT: 4,775

MOTOR TRANSPORT CO

Good

Over: S. FORK SAN ONOFRE CREEK

260 SW OF BASILONE ROAD, San Diego, CA

Built 1960 Load: 32.6 t ADT: 50

BASILONE ROAD

Good

Over: LAS PULGAS CREEK

0.1 MILE E OF LAS PULGAS, San Diego, CA

Built 1960 Load: 32.6 t ADT: 8,150

VADO DEL RIO ROAD

Good

Over: UNNAMED CREEK

0.1 MILE E OF BASILONE RD, San Diego, CA

Built 1960 Load: 32.6 t ADT: 1,507

SAN MATEO GATE BYP

Good

Over: CHRISTIANITOS CREEK

AT SAN MATEO GATE, San Diego, CA

Built 2000 Load: 32.6 t ADT: 5

WIRE MOUNTIAN ROAD

Good

Over: VANDEGRIFT BLVD

500 NORTH OF MAIN GATE, San Diego, CA

Built 2014 Load: 32.6 t ADT: 500

FULTON ROAD

Good

Over: SANTA ROSA CREEK

1/4 MI S COLLEGE AVE, Sonoma, CA

Built 1960 Load: 32.6 t ADT: 19,000

STATE ROUTE 24 WB

Good

Over: WALNUT CREEK UC (BARTD)

04-CC-024-R8.31, Contra Costa, CA

Built 1970 Load: 32.6 t ADT: 79,500

STATE ROUTE 120

Good

Over: HILLSIDE

10-TUO-120-R44.84, Tuolumne, CA

Built 1970 Load: 32.6 t ADT: 3,650

INTERSTATE 80 WB

Good

Over: UP BNSF AMTRAK E80-W580

04-ALA-080-R7.20-ALB, Alameda, CA

Built 1960 Load: 32.6 t ADT: 271,000

INTERSTATE 580

Good

Over: MACARTHUR BLVD

04-ALA-580-R39.91-OAK, Alameda, CA

Built 1964 Load: 32.6 t ADT: 134,000

INTERSTATE 80

Good

Over: YERBA BUENA ISLAND

04-SF-080-7.85L-SF, San Francisco, CA

Built 1936 Load: 32.6 t ADT: 248,000

CECIL AVE

Good

Over: STATE ROUTE 99

06-KER-099-56.54-DLN, Kern, CA

Built 1955 Load: 32.6 t ADT: 6,796

INTERSTATE 10 EB

Good

Over: ATLANTIC BLVD

07-LA-010-23.33-ALH, Los Angeles, CA

Built 1953 Load: 32.6 t ADT: 35,000

INTERSTATE 10 WB

Good

Over: GARFIELD AVE

07-LA-010-23.99-ALH, Los Angeles, CA

Built 1953 Load: 32.6 t ADT: 107,500

INTERSTATE 10 WB

Good

Over: SIXTH STREET

07-LA-010-23.65-ALH, Los Angeles, CA

Built 1953 Load: 32.6 t ADT: 107,500

INTERSTATE 10 EB

Good

Over: SIXTH STREET

07-LA-010-23.65-ALH, Los Angeles, CA

Built 1953 Load: 32.6 t ADT: 107,500

INTERSTATE 10

Good

Over: WHITE AVENUE

07-LA-010-45.28-POM, Los Angeles, CA

Built 1954 Load: 32.6 t ADT: 247,000

INTERSTATE 10

Good

Over: GAREY ORANGE MC KINLEY

07-LA-010-45.73-POM, Los Angeles, CA

Built 1954 Load: 32.6 t ADT: 247,000

INTERSTATE 10

Good

Over: SAN ANTONIO AVE

07-LA-010-46.72-POM, Los Angeles, CA

Built 1954 Load: 32.6 t ADT: 247,000

INTERSTATE 405

Good

Over: 223RD STREET OH

07-LA-405-8.19-LBCH, Los Angeles, CA

Built 1961 Load: 32.6 t ADT: 237,800

INTERSTATE 405

Good

Over: 120TH STREET

07-LA-405-R20.73-ESEG, Los Angeles, CA

Built 1963 Load: 32.6 t ADT: 260,800

S405-IMPERIAL HWY

Good

Over: LENNOX BLVD

07-LA-405-21.74-LA, Los Angeles, CA

Built 1989 Load: 32.6 t ADT: 40,000

IMPERIAL HWY-N405

Good

Over: LENNOX BLVD

07-LA-405-21.74-LA, Los Angeles, CA

Built 1989 Load: 32.6 t ADT: 62,400

U.S. HIGHWAY 101

Good

Over: ENCINO EQUESTRIAN UC

07-LA-101-18.51-LA, Los Angeles, CA

Built 1958 Load: 32.6 t ADT: 296,000

INTERSTATE 405

Good

Over: LASSEN STREET

07-LA-405-45.74-LA, Los Angeles, CA

Built 1963 Load: 32.6 t ADT: 216,000

INTERSTATE 405

Good

Over: CHATSWORTH STREET

07-LA-405-46.74-LA, Los Angeles, CA

Built 1963 Load: 32.6 t ADT: 209,000

E10-N405 CONN

Good

Over: 10 405 STS METRO RR

07-LA-010-R5.28-LA, Los Angeles, CA

Built 1963 Load: 32.6 t ADT: 24,110

ALAMEDA ST-E91 ON

Good

Over: ALAMEDA ST COMPTON CRK

07-LA-091-R10.26-COM, Los Angeles, CA

Built 1974 Load: 32.6 t ADT: 8,900

W91-ARTESIA+SAN FE

Good

Over: ARTESIA BL SANTA FE AV

07-LA-091-R10.39-COM, Los Angeles, CA

Built 1974 Load: 32.6 t ADT: 6,500

GRAND AVE

Good

Over: TRANSIT TUNNEL

BETW. 3RD ST & 4TH ST, Los Angeles, CA

Built 1982 Load: 32.6 t ADT: 8,212

B STREET

Good

Over: SAN DIEGO CREEK

0.1 MI. W/O PACIFICA, Orange, CA

Built 1993 Load: 32.6 t ADT: 10

SIDEWINDER RD.

Good

Over: CREEK

NWSSBFA, San Diego, CA

Built 1990 Load: 32.7 t ADT: 1

FOURTH STREET

Good

Over: PALETA CREEK

3/4MI N OF RECREATION WAY, San Diego, CA

Built 1997 Load: 32.7 t ADT: 100

DIVISION STREET

Good

Over: PALETA CREEK

1/4MI N OF RECREATION WAY, San Diego, CA

Built 1997 Load: 32.7 t ADT: 50

GOLF ROAD

Good

Over: BOLSA CHICA CHANNEL

NWS SEAL BEACH, Orange, CA

Built 1966 Load: 32.7 t ADT: 50

West Gale Ave

Good

Over: San Luis Canal

2 mi E of Lassen Av, Fresno, CA

Built 1968 Load: 32.7 t ADT: 700

COUNTY ROAD 305

Good

Over: NORTH FORK SMITH RIVER

12 MI E JCT ROWDY CREK RD, Del Norte, CA

Built 1981 Load: 32.7 t ADT: 10

MINERS CREEK ROAD

Good

Over: FRENCH CREEK

0.1 MI E FRENCH CREEK RD, Siskiyou, CA

Built 1967 Load: 32.7 t ADT: 62

STATE ROUTE 299

Good

Over: MILL CREEK

01-HUM-299-R4.21, Humboldt, CA

Built 1965 Load: 32.7 t ADT: 9,700

U.S. HIGHWAY 101

Good

Over: SORENSON ROAD

01-HUM-101-R39.67, Humboldt, CA

Built 1967 Load: 32.7 t ADT: 6,190

STATE ROUTE 96

Good

Over: BLUFF CREEK

01-HUM-096-R28.91, Humboldt, CA

Built 1967 Load: 32.7 t ADT: 540

GUINTOLI LANE

Good

Over: STATE ROUTE 299

01-HUM-299-0.72-ARC, Humboldt, CA

Built 1969 Load: 32.7 t ADT: 5,644

BROWNS RANCH ROAD

Good

Over: EAST WEAVER CREEK

0.2 MI E OF S.R. 3, Trinity, CA

Built 1955 Load: 32.7 t ADT: 439

Showing 21,201-21,250 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.