Colusa County, CA

211 public highway bridges

Colusa County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Colusa County, California contains 211 public highway bridges. Roughly 37.4% are rated “Good,” 48.3% “Fair,” and 6.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

211
Total Bridges
37.4%
Good
48.3%
Fair
6.2%
Poor Condition

Condition Distribution

Good
37.4% (79)
Fair
48.3% (102)
Poor
6.2% (13)

All Bridges (211)

INTERSTATE 5

Fair

Over: FRESHWATER CREEK

03-COL-005-R19.66, Colusa, CA

Built 1971 Load: 41.1 t ADT: 15,000

DELPHOS RD

Fair

Over: FRESHWATER CREEK

0.4 MI N/O FRESHWATER RD, Colusa, CA

Built 1971 Load: 41.1 t ADT: 29

STATE ROUTE 20

Fair

Over: COLUSA TROUGH

03-COL-020-27.83, Colusa, CA

Built 1962 Load: 41.8 t ADT: 6,400

DANLEY ROAD

Fair

Over: LURLINE CREEK

AT LURLINE RD, Colusa, CA

Built 1974 Load: 42.1 t ADT: 152

INTERSTATE 5

Fair

Over: CORTINA CREEK

03-COL-005-R12.55, Colusa, CA

Built 1967 Load: 46.0 t ADT: 15,000

INTERSTATE 5 SB

Fair

Over: CNFR & OLD HWY 99W

03-COL-005-R16.57, Colusa, CA

Built 1971 Load: 48.0 t ADT: 14,000

INTERSTATE 5 NB

Fair

Over: CNFR & OLD HWY 99W

03-COL-005-R16.55, Colusa, CA

Built 1971 Load: 48.0 t ADT: 14,000

TWO MILE ROAD

Fair

Over: STONE CORRAL CREEK

1.9 MI N OF MAXWELL RD, Colusa, CA

Built 1983 Load: 48.9 t ADT: 76

CLARK AVENUE

Fair

Over: COLUSA DRAIN

1.5 MI S OF NORMAN RD, Colusa, CA

Built 1982 Load: 49.9 t ADT: 15

BRIM ROAD

Fair

Over: MILL CREEK

0.4 MI W BEAR VALLEY RD, Colusa, CA

Built 1986 Load: 51.2 t ADT: 11

BEAR VALLEY ROAD

Fair

Over: BEAR CREEK

0.2 MI S KEGAN RD, Colusa, CA

Built 1960 Load: 51.5 t ADT: 33

LURLINE AVE

Fair

Over: LURLINE CREEK

2.1 MI EAST OF I-5, Colusa, CA

Built 1981 Load: 54.4 t ADT: 108

BRIDGE ST

Fair

Over: SACRAMENTO RIVER

BETWEEN MAIN ST/RIV RD, Colusa, CA

Built 1980 Load: 55.4 t ADT: 2,006

COLLEGE CITY RD

Fair

Over: SOUTH FORK BRUSH CREEK

1.2 MI N OF WHITE RD, Colusa, CA

Built 1972 Load: 56.1 t ADT: 402

SUTTON ROAD

Fair

Over: FUNKS CREEK

0.25 MI N OF LENAHAN RD, Colusa, CA

Built 1964 Load: 59.6 t ADT: 65

FRESHWATER ROAD

Fair

Over: SALT CREEK

0.1 MI E OF I-5, Colusa, CA

Built 1968 Load: 61.6 t ADT: 829

INTERSTATE 5 NB

Fair

Over: STONE CORRAL CREEK

03-COL-005-R27.74, Colusa, CA

Built 1971 Load: 63.8 t ADT: 17,000

SITES-LODOGA RD

Fair

Over: SQUAW CREEK

21.8 MI W/O I-5, Colusa, CA

Built 1973 Load: 64.8 t ADT: 283

WALNUT DR

Fair

Over: SALT CREEK

1.5 MI E OF SR 20, Colusa, CA

Built 1970 Load: 65.4 t ADT: 181

LEESVILLE-LODGA RD

Good

Over: INDIAN CREEK

1.0 MI S LDOGA-STNYFD RD, Colusa, CA

Built 1930 Load: 16.2 t ADT: 69

WHITE ROAD

Good

Over: RD 108 10Q CANAL

1.4 MI W/O SR 45/BROWNING, Colusa, CA

Built 1926 Load: 16.2 t ADT: 59

OLD 99W

Good

Over: FRESHWATER CREEK

0.3 MI N FRESHWATER RD, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,797

SYCAMORE CUTOFF

Good

Over: IRRIGATION DITCH

0.1 MI N/E OF SR 45, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,085

HILLGATE ROAD

Good

Over: SALT CREEK

0.3 MI E OF ALMOND RD, Colusa, CA

Built 1965 Load: 17.2 t ADT: 952

POUNDSTONE ROAD

Good

Over: RD 108 MAIN CANAL

1.1 MI S OF TULE RD, Colusa, CA

Built 1930 Load: 21.4 t ADT: 62

FOUTS SPRINGS RD

Good

Over: SALT CREEK

0.2 MI W LADOGA-STNYFD RD, Colusa, CA

Built 1970 Load: 22.0 t ADT: 237

OLD 99W

Good

Over: LURLINE CREEK

2.0 MI NORTH OF HAAS RD, Colusa, CA

Built 1930 Load: 23.7 t ADT: 1,298

SR 20

Good

Over: POWELL SLOUGH

03-COL-020-28.54, Colusa, CA

Built 1915 Load: 24.3 t ADT: 6,400

OLD 99W

Good

Over: GLENN VALLEY SLOUGH OFLO

1.9 MI NORTH OF HAAS RD, Colusa, CA

Built 1914 Load: 24.3 t ADT: 1,298

BAGLEY RD

Good

Over: TEHAMA-COLUSA CANAL

2.8 MI W DANLEY RD, Colusa, CA

Built 1978 Load: 26.6 t ADT: 10

FRESHWATER RD

Good

Over: TEHAMA-COLUSA CANAL

3.4 MI W DANLEY RD, Colusa, CA

Built 1978 Load: 26.6 t ADT: 17

MCDERMOTT RD

Good

Over: STONE CORRAL CREEK

0.8 MI N OF MAXWELL-SITES, Colusa, CA

Built 1947 Load: 26.9 t ADT: 268

STATE ROUTE 20

Good

Over: STEER DITCH

03-COL-020-36.02, Colusa, CA

Built 1923 Load: 27.2 t ADT: 9,800

KING RD

Good

Over: TEHAMA-COLUSA CANAL

1.7 MI E OF S.R. 20, Colusa, CA

Built 1978 Load: 27.2 t ADT: 56

WALNUT DR

Good

Over: TEHAMA-COLUSA CANAL

1.2 MI E OF S.R. 20, Colusa, CA

Built 1978 Load: 27.9 t ADT: 178

MAXWELL ROAD

Good

Over: COLUSA TROUGH

2.4 MI E FOUR MI RD, Colusa, CA

Built 1972 Load: 28.5 t ADT: 2,282

CORTINA VINEYARD R

Good

Over: TEHAMA-COLUSA CANAL

1.1 MI S MEYER RD, Colusa, CA

Built 1976 Load: 28.8 t ADT: 62

STATE ROUTE 20

Good

Over: TEHAMA-COLUSA CANAL

03-COL-020-13.93, Colusa, CA

Built 1977 Load: 29.2 t ADT: 5,800

INTERSTATE 5

Good

Over: HILLGATE ROAD

03-COL-005-6.84, Colusa, CA

Built 1957 Load: 30.8 t ADT: 35,000

CORTINA SCHOOL RD

Good

Over: CORTINA CREEK

1.4 MI SOUTH MEYERS RD, Colusa, CA

Built 1970 Load: 31.1 t ADT: 473

ALMOND AVE

Good

Over: TEHAMA-COLUSA CANAL

0.8 MI S OF HILLGATE RD, Colusa, CA

Built 1976 Load: 31.1 t ADT: 450

WAGNER AVE

Good

Over: TEHAMA-COLUSA CANAL

0.2 MI W OF WILDWOOD RD, Colusa, CA

Built 1976 Load: 31.1 t ADT: 399

NONPAREIL AVE

Good

Over: TEHAMA-COLUSA CANAL

0.5 MI E OF WILDWOOD RD, Colusa, CA

Built 1976 Load: 31.1 t ADT: 60

GREENBAY ROAD

Good

Over: TEHAMA-COLUSA CANAL

0.7 MI E OF WILDWOOD RD, Colusa, CA

Built 1976 Load: 31.1 t ADT: 271

HARRINGTON AVE

Good

Over: TEHAMA-COLUSA CANAL

1.0 MI W OF I-5, Colusa, CA

Built 1976 Load: 31.1 t ADT: 243

INTERSTATE 5

Good

Over: SOUTH BRANCH SAND CREEK

03-COL-005-R8.51, Colusa, CA

Built 1967 Load: 32.4 t ADT: 29,500

INTERSTATE 5

Good

Over: CORTINA CREEK OVERFLOW

03-COL-005-R11.83, Colusa, CA

Built 1946 Load: 32.4 t ADT: 33,000

INTERSTATE 5

Good

Over: BRUSH CREEK

03-COL-005-R2.95, Colusa, CA

Built 1967 Load: 32.4 t ADT: 35,000

STATE ROUTE 20

Good

Over: REFUGE DRAIN

03-COL-020-28.81, Colusa, CA

Built 1983 Load: 32.4 t ADT: 7,750

STATE ROUTE 20

Good

Over: BEAR CREEK TRIBUTARY

03-COL-020-3.40, Colusa, CA

Built 2009 Load: 32.4 t ADT: 4,950

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.