Butte County, CA

441 public highway bridges

Butte County Bridge Snapshot

Butte County, California contains 441 public highway bridges in the FHWA National Bridge Inventory. Roughly 28.1% are rated “Good,” 57.6% “Fair,” 5.9% “Poor,” and 5.9% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

441

Total Bridges

28.1%

Good

5.9%

Poor

5.9%

Structurally Deficient

Condition Distribution

Good

28.1% (124)

Fair

57.6% (254)

Poor

5.9% (26)

SD

5.9% (26)

All Bridges (441)

Sort:

MIDWAY RD

Over: MOULTON SLOUGH

3 MI N RICHVALE RD, Butte, CA

Built 1918 Load: 24.3 t ADT: 6,630

GRAND AVE

Over: RUDY CREEK

W OF 14TH ST., Butte, CA

Built 1962 Load: 24.3 t ADT: 5,219

GRIDLEY COLUSA HWY

Over: SCHOHR DRAIN

0.6 MI E/O COLUSA CO LINE, Butte, CA

Built 1958 Load: 24.3 t ADT: 1,139

PENTZ ROAD

Over: HORSETHIEF CANYON

1 MI W WHEELOCK ROAD, Butte, CA

Built 1971 Load: 24.3 t ADT: 2,469

FIRST ST

Over: HAMILTON SLOUGH

0.2 MI S/O B ST IN BIGGS, Butte, CA

Built 1938 Load: 24.3 t ADT: 80

JOHNSON CLAN AVE

Over: LIVE OAK SLOUGH

0.2 MI W/O LARKIN RD, Butte, CA

Built 1950 Load: 24.3 t ADT: 110

AFTON RD

Over: MAIN DRAIN

3 MI E/O AGUAS FRIAS RD, Butte, CA

Built 1950 Load: 24.3 t ADT: 513

COAL CANYON ROAD

Over: GOLD RUN CREEK

EAST OF TABLE MOUNTAIN RD, Butte, CA

Built 1960 Load: 24.3 t ADT: 100

AGUAS FRIAS ROAD

Over: WESTERN CANAL-PRATT LATL

1.5 MI NORTH OF NELSON RD, Butte, CA

Built 1960 Load: 24.3 t ADT: 423

LOWER HONCUT RD

Over: NORTH HONCUT CREEK

4.3 MI E OF SH 70, Butte, CA

Built 1966 Load: 24.6 t ADT: 1,059

RIVER RD

Over: GRASSY BANKS SLOUGH

2.03 MI N OF ORD FERRY RD, Butte, CA

Built 1930 Load: 24.6 t ADT: 1,256

AFTON RD

Over: CHEROKEE CANAL

0.4 MI E/O WICKMAN RD, Butte, CA

Built 1959 Load: 24.6 t ADT: 513

STATE ROUTE 162

Over: THERMALITO AFTERBAY

03-BUT-162-R10.12, Butte, CA

Built 1967 Load: 25.3 t ADT: 2,800

STATE ROUTE 70

Over: MIDDLE HONCUT CREEK

03-BUT-070-0.09, Butte, CA

Built 1941 Load: 25.3 t ADT: 11,700

STATE ROUTE 70

Over: SLIP OUT

03-BUT-070-28.76, Butte, CA

Built 1970 Load: 25.3 t ADT: 2,550

FARRIS RD

Over: MAIN DRAINAGE CANAL

2.5 MI W OF BIGGS-GRID RD, Butte, CA

Built 1940 Load: 25.3 t ADT: 280

BANGOR HWY

Over: ROCKY HUNCUT CREEK

2.5 MI N/O LA PORTE RD, Butte, CA

Built 1937 Load: 25.6 t ADT: 1,624

LAKEWEST DRIVE

Over: CALIFORNIA PARK LAKES

E OF BRUCE ROAD, Butte, CA

Built 1987 Load: 25.6 t ADT: 3,024

TABLE MTN BLVD

Over: DUDLEY CREEK

0.1 MI N COTTONWOOD RD, Butte, CA

Built 1955 Load: 25.9 t ADT: 1,010

OPENSHAW RD

Over: GOLD RUN CREEK

1.9 MI S E SHIPPEE RD, Butte, CA

Built 1955 Load: 25.9 t ADT: 10

GRIDLEY COLUSA RD

Over: BUTTE CREEK

AT COLUSA CO LINE, Butte, CA

Built 1958 Load: 26.2 t ADT: 749

NELSON AVENUE

Over: RUDY CREEK

BETWEEN 16TH ST & 12TH ST, Butte, CA

Built 1938 Load: 26.2 t ADT: 860

ROAD 25N17

Over: W. BRANCH FEATHER RIVER

NO DATA ENTERED, Butte, CA

Built 1966 Load: 26.2 t ADT: 50

STATE ROUTE 70

Over: THERMALITO CANAL

03-BUT-070-16.31, Butte, CA

Built 1963 Load: 26.6 t ADT: 19,000

NELSON RD

Over: ASH CREEK

1.5 MI W MIDWAY RD, Butte, CA

Built 1967 Load: 26.9 t ADT: 243

NELSON RD

Over: DRY CREEK

0.5 MI W OF SR 99, Butte, CA

Built 1959 Load: 26.9 t ADT: 198

BENNETT RD

Over: PINE CREEK

2 MI W HMLTN NORD CANA HY, Butte, CA

Built 1958 Load: 26.9 t ADT: 194

STATE ROUTE 70

Over: NORTH HONCUT CREEK

03-BUT-070-0.15, Butte, CA

Built 1941 Load: 27.2 t ADT: 11,700

MANZANITA AVE

Over: LINDO CHANNEL

BTW EAST AVE & HOOKER OAK, Butte, CA

Built 1968 Load: 27.2 t ADT: 11,900

DAYTON-DURHAM HWY

Over: BUTTE CREEK

0.8 MI E MIDWAY RD, Butte, CA

Built 1970 Load: 27.9 t ADT: 3,013

ALEXANDER AVE

Over: SUTTER-BUTTE CANAL

N EVANS-REIMER RD, Butte, CA

Built 1965 Load: 27.9 t ADT: 50

STATE ROUTE 162

Over: BIG BUTTE CREEK OVERFLOW

03-BUT-162-0.22, Butte, CA

Built 1940 Load: 28.2 t ADT: 930

STATE ROUTE 99 NB

Over: BIKE PATH

03-BUT-099-R34.63-CHC, Butte, CA

Built 1966 Load: 28.5 t ADT: 24,750

ERICKSON RD

Over: WESTERN CANAL

0.3 MI S NELSON SHIPEE RD, Butte, CA

Built 1950 Load: 28.5 t ADT: 80

STATE ROUTE 70

Over: W BR FEATHER RIV(LK ORO)

03-BUT-070-28.22, Butte, CA

Built 1962 Load: 28.8 t ADT: 2,550

STATE ROUTE 99 SB

Over: LINDO CHANNEL

03-BUT-099-R33.87-CHC, Butte, CA

Built 1966 Load: 28.8 t ADT: 24,750

STATE ROUTE 99 NB

Over: LINDO CHANNEL

03-BUT-099-R33.87-CHC, Butte, CA

Built 1966 Load: 28.8 t ADT: 24,750

STATE ROUTE 70

Over: ABANDONED RR ROW

03-BUT-070-15.13-OVL, Butte, CA

Built 1963 Load: 28.8 t ADT: 20,100

NELSON AVE

Over: THERMALITO FOREBAY

2.1 MI W/O ST HWY 70, Butte, CA

Built 1968 Load: 28.8 t ADT: 860

CROUCH AVE

Over: LITTLE CHICO CREEK

0.5 MI S CHICO RIVER RD, Butte, CA

Built 1939 Load: 28.8 t ADT: 330

HUMBOLDT ROAD

Over: COLBY CREEK

10.5 MI E JCT S.R. 32, Butte, CA

Built 1979 Load: 29.2 t ADT: 401

STATE ROUTE 99

Over: WESTERN CANAL

03-BUT-099-14.03, Butte, CA

Built 1952 Load: 29.5 t ADT: 10,000

BANGOR PARK RD

Over: WILSON CREEK

1.8 MI W BANGOR HWY, Butte, CA

Built 1961 Load: 29.8 t ADT: 300

AQUAS FRIAS RD

Over: WESTERN CANAL

1 MI N OF NELSON RD, Butte, CA

Built 1960 Load: 30.5 t ADT: 423

MANGROVE AVE

Over: LINDO CHANNEL

BTWN E 10TH & COHASSET, Butte, CA

Built 1963 Load: 30.5 t ADT: 22,000

SALEM STREET

Over: LITTLE CHICO CREEK

0.1 MI N OF 10TH ST, Butte, CA

Built 1916 Load: 30.5 t ADT: 5,200

MIDWAY ROAD

Over: UP RR & AMTRAK

1.2MI NO DAYTON-DURHAM HY, Butte, CA

Built 1975 Load: 30.8 t ADT: 5,636

RICHVALE HWY

Over: CHEROKEE CANAL BYPASS

1.05 MI E MIDWAY RD, Butte, CA

Built 1960 Load: 31.1 t ADT: 1,191

LUMPKIN ROAD

Over: SOUTH FORK FEATHER RIVER

3 MI FORBESTOWN RD, Butte, CA

Built 1967 Load: 31.1 t ADT: 855

BANGOR HWY

Over: WEST BRANCH HONCUT CREEK

6.7 MI N LAPORTE RD, Butte, CA

Built 1965 Load: 31.1 t ADT: 1,279

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →

Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026