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

WILDWOOD ROAD

Good

Over: PETROLEUM CREEK

0.3 MI N YOLO CO LINE, Colusa, CA

Built 1980 Load: 59.9 t ADT: 539

STATE ROUTE 20

Good

Over: SQUIRREL CREEK

03-NEV-020-R5.32, Nevada, CA

Built 1975 Load: 59.9 t ADT: 13,000

RALSTON AVENUE

Good

Over: US HIGHWAY 101

04-SM-101-9.55-BMT, San Mateo, CA

Built 1974 Load: 59.9 t ADT: 37,234

MT HERMON RD

Good

Over: SCBG RY & ZAYANTE CREEK

0.7 MI NE GRAHAM HIL RD, Santa Cruz, CA

Built 1971 Load: 59.9 t ADT: 19,400

ROUTE 118

Good

Over: ARLETA AVE

07-LA-118-R11.05L-LA, Los Angeles, CA

Built 1976 Load: 59.9 t ADT: 122,000

MOUNTAIN AVENUE

Good

Over: NORTH NORCO CHANNEL

0.2 MI N/O SECOND STREET, Riverside, CA

Built 1979 Load: 59.9 t ADT: 2,753

E STREET

Good

Over: RIO LINDA CREEK

0.1 MI W OF 16TH ST, Sacramento, CA

Built 1984 Load: 60.3 t ADT: 5,600

WB STATE ROUTE 92

Good

Over: DELAWARE STREET

04-SM-092-R11.61-SM, San Mateo, CA

Built 1963 Load: 60.3 t ADT: 52,500

SR 190

Good

Over: SR 65

06-TUL-190-R15.21-PTRV, Tulare, CA

Built 1971 Load: 60.3 t ADT: 17,400

INTERSTATE 5

Good

Over: TERRA BELLA STREET

07-LA-005-37.96-LA, Los Angeles, CA

Built 1963 Load: 60.3 t ADT: 294,907

HOLLY DRIVE

Good

Over: W2-W&E134 CONNECTOR RMPS

07-LA-002-R19.05-GNDL, Los Angeles, CA

Built 1978 Load: 60.3 t ADT: 8,000

CORBIN AVE

Good

Over: LOS ANGELES RIVER

0.3 MI N. VICTORY BLVD, Los Angeles, CA

Built 1957 Load: 60.3 t ADT: 20,000

TWENTY-FOURTH ST

Good

Over: DEER CREEK CHANNEL

0.4 MI W HAVEN AVE, San Bernardino, CA

Built 1982 Load: 60.3 t ADT: 800

TWENTY-FIFTH ST

Good

Over: DEER CREEK CHANNEL

0.4 MI W HAVEN AVE, San Bernardino, CA

Built 1982 Load: 60.3 t ADT: 800

TWENTY-SIXTH ST

Good

Over: DEER CREEK CHANNEL

0.4 MI W HAVEN AVE, San Bernardino, CA

Built 1982 Load: 60.3 t ADT: 2,200

UNION SCHOOL ROAD

Good

Over: WEST FORK STILLWATER CRK

0.2 MI W OLD OREGON TRAIL, Shasta, CA

Built 1968 Load: 60.6 t ADT: 1,175

AUBURN BOULEVARD

Good

Over: BROOKTREE CREEK

0.05 MI N MANZANITA AVE, Sacramento, CA

Built 1927 Load: 60.6 t ADT: 26,461

BRUCE ST-S580 ON R

Good

Over: 14TH AVENUE

04-ALA-580-R42.07-OAK, Alameda, CA

Built 1963 Load: 60.6 t ADT: 11,500

LOS GATOS ROAD

Good

Over: LOS GATOS CREEK

11.31 MI W OF DERRICK BL, Fresno, CA

Built 1974 Load: 60.6 t ADT: 200

AVE 56 (CO RD J22)

Good

Over: STATE ROUTE 99

06-TUL-099-7.17, Tulare, CA

Built 1955 Load: 60.6 t ADT: 2,500

NO DATA ENTERED

Good

Over: GRIFFIN CREEK

S29 T18N R4E, Del Norte, CA

Built 1978 Load: 60.6 t ADT: 50

GAVIN MANDRY DRIVE

Good

Over: BEST SLOUGH CREEK

2.0 MILES EAST OF INTERSE, Yuba, CA

Built 2022 Load: 60.8 t ADT: 400

INTERSTATE 505

Good

Over: CHICKAHOMINY SLOUGH

03-YOL-505-3.37, Yolo, CA

Built 1980 Load: 60.9 t ADT: 12,000

RAMONA ST

Good

Over: PINOLE CREEK

0.1 MI E OF PINOLE VAL RD, Contra Costa, CA

Built 1971 Load: 60.9 t ADT: 1,500

LOS GATOS ROAD

Good

Over: LOS GATOS CREEK

11.14 MI W OF DERRICK BL, Fresno, CA

Built 1974 Load: 60.9 t ADT: 200

MOUNTAIN ST

Good

Over: SR 2

07-LA-002-R20.05-GNDL, Los Angeles, CA

Built 1975 Load: 60.9 t ADT: 4,000

SB US HIGHWAY 101

Good

Over: UP RR & AMTRAK

04-SCL-101-R5.10, Santa Clara, CA

Built 1973 Load: 61.2 t ADT: 26,000

US HIGHWAY 101 SB

Good

Over: SEPULVEDA BLVD

07-LA-101-16.94L-LA, Los Angeles, CA

Built 1959 Load: 61.2 t ADT: 229,750

PARKRIDGE AVENUE

Good

Over: NORTH NORCO CHANNEL

0.12 MI. S/O SECOND ST., Riverside, CA

Built 1979 Load: 61.2 t ADT: 3,437

INTERSTATE 8 EB

Good

Over: LAS BANCAS RD

11-SD-008-R40.84R, San Diego, CA

Built 1974 Load: 61.2 t ADT: 9,800

LEBEC ROAD

Good

Over: CUDDY CREEK

0.06 MI N FRAZIER MTN RD, Kern, CA

Built 1982 Load: 61.6 t ADT: 3,800

SB I-5 (TRUCK)

Good

Over: ROUTE 405

07-LA-005-41.55-LA, Los Angeles, CA

Built 1974 Load: 61.6 t ADT: 131,438

N57-W10 CONNECTOR

Good

Over: INTERSTATE 10 & CONNS

07-LA-057-R7.66-POM, Los Angeles, CA

Built 1972 Load: 61.6 t ADT: 11,300

GORGE RD

Good

Over: LAS FLORES CRK

100FT E/O LAS FLORES C RD, Los Angeles, CA

Built 1945 Load: 61.6 t ADT: 102

ADAMS AVE

Good

Over: INTERSTATE 805 & RAMPS

11-SD-805-16.99-SD, San Diego, CA

Built 1970 Load: 61.6 t ADT: 13,596

STATE ROUTE 26

Good

Over: INDIAN CREEK

10-CAL-026-2.46, Calaveras, CA

Built 1998 Load: 61.9 t ADT: 3,710

SOLEDAD CYN RD

Good

Over: SANTA CLARA RIV / SPTC

6.0MI SW/O SR-14 FWY, Los Angeles, CA

Built 1948 Load: 61.9 t ADT: 2,550

ARROW HWY

Good

Over: LITTLE DALTON WASH

0.5MI W/O AZUSA AVE, Los Angeles, CA

Built 1952 Load: 61.9 t ADT: 25,376

SLAUSON AVE

Good

Over: ACTA

40FT E/O ALAMEDA ST, Los Angeles, CA

Built 2000 Load: 61.9 t ADT: 24,751

BANGOR PARK RD

Good

Over: WILSON CREEK

0.4 MI E DUNSTONE DR, Butte, CA

Built 1950 Load: 62.2 t ADT: 300

WICKES AVE

Good

Over: ESTUDILLO CANAL DITCH

0.15 MI S MANOR BLVD, Alameda, CA

Built 1972 Load: 62.2 t ADT: 12,900

FOURTH AVENUE

Good

Over: BRANCH OF EASTSIDE CANAL

0.25 MI W NORTHRUP ROAD, Merced, CA

Built 1968 Load: 62.2 t ADT: 150

US HIGHWAY 101 SB

Good

Over: SOLOMON SUMMIT UC

05-SB-101-78.69, Santa Barbara, CA

Built 1956 Load: 62.2 t ADT: 14,500

US HIGHWAY 101 NB

Good

Over: SOLOMON SUMMIT UC

05-SB-101-78.69, Santa Barbara, CA

Built 1956 Load: 62.2 t ADT: 14,500

E118-S5 CONN

Good

Over: PAXTON ON/OFF RA CHAN

07-LA-118-R11.41R-LA, Los Angeles, CA

Built 1976 Load: 62.2 t ADT: 38,542

2ND STREET

Good

Over: NORTH NORCO CHANNEL

0.16 MI E/O PARKRIDGE AVE, Riverside, CA

Built 1979 Load: 62.2 t ADT: 4,352

STATE ROUTE 1

Good

Over: PFEIFFER CANYON

05-MON-001-45.52, Monterey, CA

Built 2017 Load: 62.5 t ADT: 3,150

LAKEWOOD PLACE

Good

Over: CUDDY CREEK

0.02 MI N LAKEWOOD DR, Kern, CA

Built 1979 Load: 62.5 t ADT: 835

STATE ROUTE 27

Good

Over: TOPANGA CREEK

07-LA-027-2.02, Los Angeles, CA

Built 1941 Load: 62.5 t ADT: 15,950

INTERSTATE 110

Good

Over: 92ND STREET

07-LA-110-15.47-LA, Los Angeles, CA

Built 1958 Load: 62.5 t ADT: 300,000

Showing 24,051-24,100 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.