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

INTERSTATE 15 SB

Good

Over: RAINBOW GLEN ROAD

11-SD-015-R52.11, San Diego, CA

Built 1985 Load: 33.7 t ADT: 72,000

JEFFREY ROAD

Good

Over: INTERSTATE 8

11-IMP-008-R25.78, Imperial, CA

Built 1968 Load: 33.7 t ADT: 150

U.S. HIGHWAY 199

Good

Over: MIDDLE FORK SMITH RIVER

01-DN-199-R17.06, Del Norte, CA

Built 1965 Load: 34.0 t ADT: 3,100

IRR CO RD 87

Good

Over: MAMATH SLOUGH

0.5 MI NE CR 91, Modoc, CA

Built 1955 Load: 34.0 t ADT: 255

STATE ROUTE 254

Good

Over: U.S. HIGHWAY 101

01-HUM-254-19.94, Humboldt, CA

Built 1961 Load: 34.0 t ADT: 565

U.S. HIGHWAY 101

Good

Over: WILLIFORD ROAD

01-HUM-101-30.50, Humboldt, CA

Built 1961 Load: 34.0 t ADT: 5,450

STATE ROUTE 299

Good

Over: DRY CREEK

02-SHA-299-31.50, Shasta, CA

Built 1953 Load: 34.0 t ADT: 4,475

STATE ROUTE 70

Good

Over: HUMBUG CREEK

02-PLU-070-73.99, Plumas, CA

Built 1969 Load: 34.0 t ADT: 6,200

STATE ROUTE 162

Good

Over: EEL RIVER

01-MEN-162-8.25, Mendocino, CA

Built 1938 Load: 34.0 t ADT: 860

MOUNTAIN VIEW RD

Good

Over: ROBINSON CREEK

0.05 MILES FROM SR 128, Mendocino, CA

Built 1968 Load: 34.0 t ADT: 575

CO RD #21

Good

Over: TEHAMA-COLUSA CANAL

0.4 MI EAST OF CO RD M, Glenn, CA

Built 1975 Load: 34.0 t ADT: 123

CO RD M

Good

Over: TEHAMA-COLUSA CANAL

0.3 MI NORTH CO RD #24, Glenn, CA

Built 1975 Load: 34.0 t ADT: 883

PALERMO-HONCUT HWY

Good

Over: BRANCH WYMAN RAVINE

0.6 MI S PALERMO RD, Butte, CA

Built 1974 Load: 34.0 t ADT: 2,423

MILLER ROAD

Good

Over: SALT CREEK

AT HAHN ROAD, Colusa, CA

Built 2003 Load: 34.0 t ADT: 59

STATE ROUTE 65 NB

Good

Over: HUTCHINSON CREEK

03-YUB-065-R7.42, Yuba, CA

Built 1971 Load: 34.0 t ADT: 8,100

INTERSTATE 80

Good

Over: EAGLE LAKES ROAD

03-NEV-080-R62.15L, Nevada, CA

Built 1964 Load: 34.0 t ADT: 14,250

STATE ROUTE 20

Good

Over: MILL STREET

03-NEV-020-R12.16-GVY, Nevada, CA

Built 1969 Load: 34.0 t ADT: 10,000

US HIGHWAY 101 SB

Good

Over: ST RTE 128 (CANYON RD)

04-SON-101-R43.36, Sonoma, CA

Built 1975 Load: 34.0 t ADT: 13,500

N99-W50 CONNECTOR

Good

Over: W50-W STREET OFF-RAMP

03-SAC-099-R24.35-SAC, Sacramento, CA

Built 1968 Load: 34.0 t ADT: 30,300

N&S5-E50 CONNECTOR

Good

Over: 3RD ST OFFRAMP & 5TH ST

03-SAC-005-22.50-SAC, Sacramento, CA

Built 1971 Load: 34.0 t ADT: 70,000

ELDER CREEK RD

Good

Over: MORRISON CREEK

BTWN 65TH ST AND STKTN BL, Sacramento, CA

Built 1965 Load: 34.0 t ADT: 21,043

COLONY RD

Good

Over: BADGER CREEK

0.3 MI S OF ARNO RD, Sacramento, CA

Built 1960 Load: 34.0 t ADT: 560

2ND ST

Good

Over: IRWIN CREEK

WEST SIDE RTE 101, Marin, CA

Built 1965 Load: 34.0 t ADT: 20,000

DRAIS RD

Good

Over: SOUTH BRANCH CHANNEL A

0.8 MI S COPPEROPOLIS RD, San Joaquin, CA

Built 1972 Load: 34.0 t ADT: 314

52ND-W24 ON RAMP

Good

Over: 45TH STREET

04-ALA-024-R2.47-OAK, Alameda, CA

Built 1970 Load: 34.0 t ADT: 15,000

STATE ROUTE 24 EB

Good

Over: GOLDEN GATE AVE

04-ALA-024-R4.44-OAK, Alameda, CA

Built 1970 Load: 34.0 t ADT: 143,000

INTERSTATE 980

Good

Over: 27TH NORTHGATE SYCAMORE

04-ALA-980-1.40-OAK, Alameda, CA

Built 1969 Load: 34.0 t ADT: 57,500

INTERSTATE 680 NB

Good

Over: DEPT OF WATER RESOURCES

04-ALA-680-M1.47-FMT, Alameda, CA

Built 1971 Load: 34.0 t ADT: 61,000

STATE ROUTE 1 SB

Good

Over: SAN ANDREAS ROAD

05-SCR-001-R7.67, Santa Cruz, CA

Built 1974 Load: 34.0 t ADT: 30,000

NB U.S. HWY 101

Good

Over: UP AMTRAK & PRIVATE RD

04-SCL-101-R0.81, Santa Clara, CA

Built 1950 Load: 34.0 t ADT: 26,000

N680-E&W130

Good

Over: CAPITOL EXP CAPITOL-N680

04-SCL-680-M1.41-SJS, Santa Clara, CA

Built 1974 Load: 34.0 t ADT: 10,600

SAN ANTONIO ST

Good

Over: SILVER CREEK

0.4 MI SW OF I-680, Santa Clara, CA

Built 1974 Load: 34.0 t ADT: 10,430

CROWS LANDING ROAD

Good

Over: STATE ROUTE 99 & RAMP

10-STA-099-R14.47-TUR, Stanislaus, CA

Built 1963 Load: 34.0 t ADT: 25,600

SANTA FE AVENUE

Good

Over: MARIPOSA CREEK

1.0 MI NW LE GRAND RD, Merced, CA

Built 1966 Load: 34.0 t ADT: 2,177

ROAD 603

Good

Over: WILLOW CREEK

0.2 MI W RD 407, Madera, CA

Built 1974 Load: 34.0 t ADT: 100

STATE ROUTE 14 NB

Good

Over: UP RR & BNSF RY

09-KER-014-R15.30, Kern, CA

Built 1972 Load: 34.0 t ADT: 8,975

STATE ROUTE 1

Good

Over: EL JARO CREEK

05-SB-001-13.34, Santa Barbara, CA

Built 1959 Load: 34.0 t ADT: 6,900

STATE ROUTE 1

Good

Over: US HWY 101 (@PM R48.85)

05-SB-001-R0.01, Santa Barbara, CA

Built 1967 Load: 34.0 t ADT: 7,000

CATHEDRAL OAKS RD

Good

Over: SAN PEDRO CREEK

0.7 MI WEST OF FAIRVIEW, Santa Barbara, CA

Built 1970 Load: 34.0 t ADT: 8,535

LILAC LN

Good

Over: BUENA VISTA CREEK

NORTH TOLLIS AVE, Santa Barbara, CA

Built 1965 Load: 34.0 t ADT: 422

STATE ROUTE 118

Good

Over: SANTA CLARA RIVER

07-VEN-118-1.63, Ventura, CA

Built 1994 Load: 34.0 t ADT: 44,500

SUNSET BLVD

Good

Over: STATE ROUTE 110 & RAMPS

07-LA-110-23.83-LA, Los Angeles, CA

Built 1948 Load: 34.0 t ADT: 22,000

INTERSTATE 10

Good

Over: COGSWELL RD

07-LA-010-30.13-EMTE, Los Angeles, CA

Built 1956 Load: 34.0 t ADT: 213,000

E&W118-S5 CONNECTR

Good

Over: PAXTON STREET

07-LA-118-R11.42L-LA, Los Angeles, CA

Built 1976 Load: 34.0 t ADT: 51,151

INTERSTATE 405

Good

Over: UP RR & ALAMEDA STREET

07-LA-405-8.76-CRSN, Los Angeles, CA

Built 1962 Load: 34.0 t ADT: 237,800

PASS AVE

Good

Over: STATE ROUTE 134 & ONRAMP

07-LA-134-1.82-BRB, Los Angeles, CA

Built 1962 Load: 34.0 t ADT: 20,000

N&S710-S405 CONNEC

Good

Over: S405-PACIFIC PL OFF-RAMP

07-LA-710-9.20-LBCH, Los Angeles, CA

Built 1963 Load: 34.0 t ADT: 18,720

STATE ROUTE 14 SB

Good

Over: PURITAN MINE ROAD

07-LA-014-45.73, Los Angeles, CA

Built 1963 Load: 34.0 t ADT: 48,500

N605-E&W91 CONN

Good

Over: ARTESIA BLVD

07-LA-605-R4.78-CRTS, Los Angeles, CA

Built 1966 Load: 34.0 t ADT: 43,475

STATE ROUTE 60

Good

Over: LEMON AVE

07-LA-060-R22.38-DMBR, Los Angeles, CA

Built 1970 Load: 34.0 t ADT: 204,000

Showing 21,551-21,600 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.