Glenn County, CA

242 public highway bridges

Glenn County Bridge Snapshot

Glenn County, California contains 242 public highway bridges in the FHWA National Bridge Inventory. Roughly 35.5% are rated “Good,” 47.5% “Fair,” 9.9% “Poor,” and 9.9% 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.

242

Total Bridges

35.5%

Good

9.9%

Poor

9.9%

Structurally Deficient

Condition Distribution

Good

35.5% (86)

Fair

47.5% (115)

Poor

9.9% (24)

SD

9.9% (24)

All Bridges (242)

Sort:

COUNTY RD 35

Over: ARTOIS DRAWLET

JUST W/O ROAD 'H', Glenn, CA

Built 1930 Load: 16.8 t ADT: 85

ROAD XX

Over: VANSYCKLE SLOUGH

0.2 MII SOUTH OF ROAD 19, Glenn, CA

Built 1930 Load: 16.8 t ADT: 26

COUNTY RD 306

Over: BRANCH STONY CREEK

1 MI N OF RD #303, Glenn, CA

Built 1930 Load: 16.8 t ADT: 235

CO RD 302 \ CLARKS

Over: S FK WILLOW CREEK

1.9 MI W SH 162, Glenn, CA

Built 1916 Load: 16.8 t ADT: 46

ROAD 48

Over: WILLOW CREEK

0.65 MI E HWY 99W, Glenn, CA

Built 1945 Load: 17.2 t ADT: 647

ROAD 9

Over: CENTRAL IRRIGATION CANAL

JUST W OF ROAD 203, Glenn, CA

Built 1941 Load: 17.2 t ADT: 1,553

ROAD 60

Over: NORTH FORK LOGAN CREEK

0.4 MI W OF I-5, Glenn, CA

Built 1930 Load: 17.2 t ADT: 40

ROAD 67

Over: BRANCH HOWARD SLOUGH

1.3 MI EAST OF ROAD Z, Glenn, CA

Built 1937 Load: 17.8 t ADT: 93

BAYLISS RD

Over: GLENN-COLUSA CANAL

4.82 MI EAST OF I-5, Glenn, CA

Built 1948 Load: 18.1 t ADT: 1,731

COUNTY RD 29

Over: CENTRAL IRRIGATION CANAL

0.5 MI W ROAD XX, Glenn, CA

Built 1948 Load: 18.1 t ADT: 427

COUNTY RD 24

Over: CENTRAL IRRIGATION CANAL

0.3 MI WEST OF SH 45, Glenn, CA

Built 1948 Load: 18.1 t ADT: 634

CO RD #45

Over: SOUTH FORK WILLOW CREEK

0.25 MI W OF 99 W, Glenn, CA

Built 1965 Load: 18.8 t ADT: 27

ROAD 45

Over: GLENN-COLUSA CANAL

0.2 MI W ROAD 'P', Glenn, CA

Built 1948 Load: 18.8 t ADT: 497

ROAD 51

Over: GLENN-COLUSA CANAL

WEST OF NEWMARK AVE, Glenn, CA

Built 1948 Load: 20.1 t ADT: 140

ROAD 'F'

Over: GLENN-COLUSA CANAL

0.5 MI S/O ROAD 62, Glenn, CA

Built 1948 Load: 20.4 t ADT: 30

ROAD 48

Over: GLENN-COLUSA CANAL

1.0 MI E OF RD 99W, Glenn, CA

Built 1948 Load: 20.4 t ADT: 150

COUNTY RD NO. 8

Over: TEHAMA-COLUSA CANAL

0.2 MI E OF RD 'N', Glenn, CA

Built 1965 Load: 20.4 t ADT: 25

ROAD 61

Over: PROVIDENT CANAL

6.04 MI EAST OF RD 99W, Glenn, CA

Built 1948 Load: 20.7 t ADT: 928

ROAD 62

Over: GLENN-COLUSA CANAL

0.3 MI E/O ROAD 'F', Glenn, CA

Built 1946 Load: 21.7 t ADT: 72

ROAD 64

Over: COLUSA DRAIN

0.6 MI W RD WW, Glenn, CA

Built 1941 Load: 22.4 t ADT: 44

STATE ROUTE 162

Over: CAMPBELL SLOUGH

03-GLE-162-82.01, Glenn, CA

Built 1916 Load: 22.7 t ADT: 1,500

COUNTY RD P

Over: WILLOW CREEK

0.4 MI S OF S.H. 162, Glenn, CA

Built 1940 Load: 23.0 t ADT: 249

STATE ROUTE 162

Over: BIG BUTTE CREEK OVERFLOW

03-GLE-162-83.89, Glenn, CA

Built 1937 Load: 23.3 t ADT: 1,500

STATE ROUTE 162

Over: CENTRAL IRRIGATION CANAL

03-GLE-162-67.21, Glenn, CA

Built 1925 Load: 24.3 t ADT: 3,050

STATE ROUTE 162

Over: NYE CREEK

03-GLE-162-51.69, Glenn, CA

Built 1953 Load: 24.3 t ADT: 530

ROAD 'D'

Over: GLENN-COLUSA CANAL

0.6 MI N/O ROAD 68, Glenn, CA

Built 1962 Load: 24.3 t ADT: 268

COUNTY RD 306

Over: DRY CREEK

1.58 MI N COLUSA CO LINE, Glenn, CA

Built 1951 Load: 24.3 t ADT: 150

COUNTY RD 'D'

Over: N FK WILLOW CREEK

3.6 MI N OF S.H. 162, Glenn, CA

Built 1966 Load: 24.3 t ADT: 491

COUNTY ROAD #25

Over: BRANCH WALKER CREEK

0.2 MI W CO RD 'H', Glenn, CA

Built 1970 Load: 24.3 t ADT: 378

ROAD 57

Over: SWALLOW DRAIN

1.0 MI W RD V, Glenn, CA

Built 1945 Load: 24.3 t ADT: 45

ROAD 'V'

Over: PROVIDENT CANAL

JUST S OF HWY 162, Glenn, CA

Built 1949 Load: 24.3 t ADT: 168

ROAD 'D'

Over: SHOAT DRAW

0.9 MI S/O ROAD 65, Glenn, CA

Built 1950 Load: 24.3 t ADT: 280

CO RD 'R'

Over: QUINT CANAL

0.2 MI S STATE HWY 162, Glenn, CA

Built 1965 Load: 24.3 t ADT: 25

CO RD #99W

Over: WILLOW CREEK OVERFLOW

0.2 MI N CO RD #45, Glenn, CA

Built 1915 Load: 24.3 t ADT: 2,678

CO RD 99W

Over: EAST FORK WILSON CREEK

0.2 MI N CO RD #43, Glenn, CA

Built 1915 Load: 24.3 t ADT: 2,678

ROAD #200

Over: STONY CREEK IRRG CANAL

6.45 MI W OF I-5, Glenn, CA

Built 1950 Load: 24.3 t ADT: 300

ROAD #313

Over: WATSON CREEK

0.1 MI W OF RD #306, Glenn, CA

Built 1960 Load: 24.3 t ADT: 25

ROAD 42

Over: EAST FORK WILSON CREEK

JUST W OF HWY 99W, Glenn, CA

Built 1960 Load: 24.3 t ADT: 79

ROAD WW

Over: DRAIN DITCH

N OF C.R. # 92 F, Glenn, CA

Built 1947 Load: 24.3 t ADT: 11

ROAD #68

Over: BRANCH HUNTER CREEK

JUST WEST OF RD 'F', Glenn, CA

Built 1968 Load: 24.3 t ADT: 180

COUNTY ROAD 39

Over: SHEEP CORRAL CREEK

0.2 MI. EAST OF CR D, Glenn, CA

Built 1970 Load: 24.3 t ADT: 491

COUNTY ROAD 39

Over: WILSON CREEK

0.75 MI EAST OF CR D, Glenn, CA

Built 1950 Load: 24.3 t ADT: 491

COUNTY RD NO.6

Over: TEHAMA-COLUSA CANAL

0.2 MI E OF RD 'N', Glenn, CA

Built 1965 Load: 24.6 t ADT: 213

IRR COUNTY RD 306

Over: GRINDSTONE CREEK

23 MI N COLUSA CO LINE, Glenn, CA

Built 1950 Load: 25.6 t ADT: 396

OLD HWY 99W

Over: GLENN-COLUSA CANAL

0.9 MI S OF S.H. 162, Glenn, CA

Built 1925 Load: 25.6 t ADT: 1,452

INTERSTATE 5 SB

Over: HAMBRIGHT CREEK

03-GLE-005-R26.46, Glenn, CA

Built 1966 Load: 25.9 t ADT: 12,300

INTERSTATE 5 NB

Over: HAMBRIGHT CREEK

03-GLE-005-R26.46, Glenn, CA

Built 1966 Load: 25.9 t ADT: 12,300

ROAD 57

Over: GLENN-COLUSA CANAL

1.2 MI W/O SH 99, Glenn, CA

Built 1948 Load: 25.9 t ADT: 236

STATE ROUTE 162

Over: SACRAMENTO RIVER OVFL

03-GLE-162-79.96, Glenn, CA

Built 1940 Load: 26.2 t ADT: 2,400

ROAD 65

Over: SHOAT DRAW

0.5 MI W/O ROAD 'D', Glenn, CA

Built 1948 Load: 27.5 t ADT: 168

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

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