Colusa County, CA

211 public highway bridges

Colusa County Bridge Snapshot

Colusa County, California contains 211 public highway bridges in the FHWA National Bridge Inventory. Roughly 37.4% are rated “Good,” 48.3% “Fair,” 6.2% “Poor,” and 6.2% 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.

211
Total Bridges
37.4%
Good
6.2%
Poor
6.2%
Structurally Deficient

Condition Distribution

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

All Bridges (211)

NORMAN ROAD

Good

Over: COLUSA DRAIN

0.5 MI E CLARK AVE, Colusa, CA

Built 2009 Load: 32.4 t ADT: 289

OLD 99W

Good

Over: NOBO DRAW

0.5 MI NORTH OF HAHN RD, Colusa, CA

Built 1946 Load: 32.4 t ADT: 5,274

HILLGATE ROAD

Good

Over: ELK CREEK

0.1 MI W OF JENSEN AVE, Colusa, CA

Built 1972 Load: 32.4 t ADT: 739

LURLINE AVE

Good

Over: COLUSA TROUGH

1.5 MI E OF SAN JOSE RD, Colusa, CA

Built 1986 Load: 32.4 t ADT: 126

LEESVILLE ROAD

Good

Over: N BR FRESHWATER CREEK

2 MI NW OLD WILBUR ROAD, Colusa, CA

Built 2010 Load: 32.4 t ADT: 23

BEAR VALLEY ROAD

Good

Over: BEAR CREEK

1.4 MI N/O OLD WILBUR RD, Colusa, CA

Built 1998 Load: 32.4 t ADT: 41

FOUTS SPRINGS ROAD

Good

Over: MILL CREEK

12.5 MI W/O STONYFORD, Colusa, CA

Built 1997 Load: 32.4 t ADT: 190

SITES-LODOGA ROAD

Good

Over: SQUAW CREEK

1.2 MI N OF LODOGA, Colusa, CA

Built 1998 Load: 32.4 t ADT: 283

SITES-LODOGA ROAD

Good

Over: SQUAW CREEK

1.3 MI N OF LODOGA, Colusa, CA

Built 1998 Load: 32.4 t ADT: 283

DANLEY LATERAL RD

Good

Over: GLENN-COLUSA CANAL

0.3 MI WEST OF DANLEY RD, Colusa, CA

Built 2000 Load: 32.4 t ADT: 77

GIBSON ROAD

Good

Over: FRESHWATER CREEK

0.1 MI N/O FRESHWATER RD, Colusa, CA

Built 2001 Load: 32.4 t ADT: 41

WHITE ROAD

Good

Over: COLUSA DRAIN

3.2 MI WEST OF S.R. 45, Colusa, CA

Built 2002 Load: 32.4 t ADT: 56

BAGLEY ROAD

Good

Over: GLENN-COLUSA CANAL

0.3 MI WEST OF DANLEY RD, Colusa, CA

Built 2003 Load: 32.4 t ADT: 55

OHM ROAD

Good

Over: GLENN-COLUSA CANAL

AT WARE ROAD, Colusa, CA

Built 2004 Load: 32.4 t ADT: 18

DANLEY ROAD

Good

Over: GLENN VALLEY SLOUGH

1.8 MI N FRESHWATER RD., Colusa, CA

Built 2007 Load: 32.4 t ADT: 189

EVANS ROAD

Good

Over: CORTINA CREEK

1.6 MI SOUTH MEYERS RD, Colusa, CA

Built 2012 Load: 32.4 t ADT: 250

WALNUT DRIVE

Good

Over: SPRING CREEK

2.3 MI W OF ZUMWALT RD., Colusa, CA

Built 2010 Load: 32.4 t ADT: 410

MCDERMOTT RD.

Good

Over: TERESA CREEK

0.7 MI N OF DELEVAN RD., Colusa, CA

Built 2010 Load: 32.4 t ADT: 318

E CAMP ROAD

Good

Over: SPRING CREEK

3.4 MI S OF S.R. 20, Colusa, CA

Built 2012 Load: 32.4 t ADT: 307

LENAHAN ROAD

Good

Over: FUNKS CREEK

0.2 MI W OF SUTTON ROAD, Colusa, CA

Built 2015 Load: 32.4 t ADT: 48

COUNTY LINE ROAD

Good

Over: 108 MAIN DRAIN (SYCAMOR)

4 MI EAST OF HWY 5, Colusa, CA

Built 2017 Load: 32.4 t ADT: 200

FIFTH ST (OLD 99W)

Good

Over: NORTH BRANCH SAND CREEK

N OF YOLO CO LIN 9.8 MI, Colusa, CA

Built 1951 Load: 33.0 t ADT: 6,687

HAHN ROAD

Good

Over: SALT CREEK

0.3 MI EAST OF OHM RD, Colusa, CA

Built 1968 Load: 33.4 t ADT: 2,071

MILLER ROAD

Good

Over: SALT CREEK

AT HAHN ROAD, Colusa, CA

Built 2003 Load: 34.0 t ADT: 59

INTERSTATE 5

Good

Over: NORTH BRANCH SAND CREEK

03-COL-005-R9.79, Colusa, CA

Built 1967 Load: 34.7 t ADT: 15,000

INTERSTATE 5

Good

Over: NORTH BRANCH SAND CREEK

03-COL-005-R9.79, Colusa, CA

Built 1967 Load: 34.7 t ADT: 15,000

STATE ROUTE 20

Good

Over: SALT CREEK

03-COL-020-20.21, Colusa, CA

Built 1959 Load: 35.0 t ADT: 5,800

TULE ROAD

Good

Over: COLUSA DRAIN

1.2 MI E COLLEGE CITY RD, Colusa, CA

Built 1958 Load: 35.6 t ADT: 524

INTERSTATE 5

Good

Over: CORTINA CREEK

03-COL-005-R12.54, Colusa, CA

Built 1967 Load: 37.3 t ADT: 15,000

HAHN ROAD

Good

Over: NORTH BRANCH SAND CREEK

0.7 MI EAST OF OLD 99 W, Colusa, CA

Built 1968 Load: 37.6 t ADT: 1,651

INTERSTATE 5 SB

Good

Over: FUNKS CREEK

03-COL-005-R30.82, Colusa, CA

Built 1970 Load: 38.2 t ADT: 12,500

INTERSTATE 5

Good

Over: FUNKS CREEK

03-COL-005-R30.82, Colusa, CA

Built 1970 Load: 38.2 t ADT: 12,500

GRIMES-ARBUCKLE RD

Good

Over: COLUSA TROUGH

4 MI E OF OLD RTE 99W, Colusa, CA

Built 1971 Load: 39.9 t ADT: 1,673

INTERSTATE 5

Good

Over: LURLINE CREEK

03-COL-005-R22.32, Colusa, CA

Built 1971 Load: 40.2 t ADT: 12,500

INTERSTATE 5

Good

Over: LURLINE CREEK

03-COL-005-R22.31, Colusa, CA

Built 1971 Load: 40.2 t ADT: 12,500

OLD 99W

Good

Over: FUNKS CREEK

AT LENAHAN RD, Colusa, CA

Built 1927 Load: 40.5 t ADT: 642

FIFTH ST (OLD 99W)

Good

Over: SALT CREEK

0.4 MI S FRESHWATER RD, Colusa, CA

Built 1930 Load: 41.5 t ADT: 3,219

INTERSTATE 5

Good

Over: HUNTERS CREEK

03-COL-005-R32.94, Colusa, CA

Built 1970 Load: 41.8 t ADT: 12,500

INTERSTATE 5

Good

Over: HUNTERS CREEK

03-COL-005-R32.94, Colusa, CA

Built 1970 Load: 41.8 t ADT: 12,500

AUTO TOUR ROUTE

Good

Over: POWELL SLOUGH

W .2 MI ON REFUGE ROAD, Colusa, CA

Built 1991 Load: 44.5 t ADT: 25

SUTTON ROAD

Good

Over: STONE CORRAL CREEK

0.5 MI N OF MAXWELL-SITES, Colusa, CA

Built 1975 Load: 49.2 t ADT: 210

FRESHWATER LATERAL

Good

Over: SALT CREEK

0.5 MI S/O FRESHWATER RD, Colusa, CA

Built 2004 Load: 50.2 t ADT: 85

INTERSTATE 5

Good

Over: FUNK SLOUGH OVERFLOW

03-COL-005-R29.02, Colusa, CA

Built 1971 Load: 55.7 t ADT: 12,500

INTERSTATE 5

Good

Over: FUNK SLOUGH OVERFLOW

03-COL-005-R29.02, Colusa, CA

Built 1971 Load: 55.7 t ADT: 12,500

WILDWOOD ROAD

Good

Over: PETROLEUM CREEK

0.3 MI N YOLO CO LINE, Colusa, CA

Built 1980 Load: 59.9 t ADT: 539

INTERSTATE 5 SB

Good

Over: STONE CORRAL CREEK

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

Built 1971 Load: 63.8 t ADT: 12,500

INTERSTATE 5

Good

Over: SALT CREEK

03-COL-005-R19.25, Colusa, CA

Built 1971 Load: 63.8 t ADT: 15,000

INTERSTATE 5

Good

Over: SALT CREEK

03-COL-005-R19.25, Colusa, CA

Built 1971 Load: 63.8 t ADT: 15,000

SYCAMORE SLOUGH RD

Poor

Over: SYCAMORE SLOUGH

0.6 MI N OF SACHREITER RD, Colusa, CA

Built 1915 Load: 9.1 t ADT: 70

DENNIS DR

Poor

Over: SALT CREEK

0.1 MI W LODOGA-STONYFORD, Colusa, CA

Built 1935 Load: 11.3 t ADT: 23

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

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