Del Norte County, CA

96 public highway bridges

Del Norte County Bridge Snapshot

Del Norte County, California contains 96 public highway bridges in the FHWA National Bridge Inventory. Roughly 47.9% are rated “Good,” 36.5% “Fair,” 11.5% “Poor,” and 11.5% 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.

96
Total Bridges
47.9%
Good
11.5%
Poor
11.5%
Structurally Deficient

Condition Distribution

Good
47.9% (46)
Fair
36.5% (35)
Poor
11.5% (11)
SD
11.5% (11)

All Bridges (96)

U.S. HIGHWAY 101

Good

Over: ROWDY CREEK

01-DN-101-39.63, Del Norte, CA

Built 1951 Load: 30.1 t ADT: 7,250

U.S. HIGHWAY 199

Good

Over: PATRICK CREEK

01-DN-199-R22.07, Del Norte, CA

Built 1965 Load: 30.5 t ADT: 3,750

U.S. HIGHWAY 199

Good

Over: SMITH RIVER

01-DN-199-4.22, Del Norte, CA

Built 1990 Load: 32.4 t ADT: 4,300

U.S. HIGHWAY 199

Good

Over: MYRTLE CREEK

01-DN-199-7.09, Del Norte, CA

Built 1984 Load: 32.4 t ADT: 4,300

U.S. HIGHWAY 199

Good

Over: MIDDLE FORK SMITH RIVER

01-DN-199-R24.88, Del Norte, CA

Built 1985 Load: 32.4 t ADT: 3,750

U.S. HIGHWAY 101

Good

Over: ELK CREEK

01-DN-101-26.15-CRC, Del Norte, CA

Built 1944 Load: 32.4 t ADT: 21,500

US HIGHWAY 199 NB

Good

Over: HILLSIDE ABOVE RIVER

01-DN-199-7.32, Del Norte, CA

Built 1994 Load: 32.4 t ADT: 4,300

US HIGHWAY 101 SB

Good

Over: HILLSIDE

01-DN-101-21.01, Del Norte, CA

Built 2001 Load: 32.4 t ADT: 4,650

STATE ROUTE 169

Good

Over: TERWER CREEK

01-DN-169-2.58, Del Norte, CA

Built 2006 Load: 32.4 t ADT: 930

US HIGHWAY 199 NB

Good

Over: HILLSIDE ABOVE RIVER

01-DN-199-7.50, Del Norte, CA

Built 2005 Load: 32.4 t ADT: 4,300

SR 197 (N BANK RD)

Good

Over: SULTAN CREEK

01-DN-197-4.98, Del Norte, CA

Built 2016 Load: 32.4 t ADT: 2,050

STATE ROUTE 197

Good

Over: LITTLE MILL CREEK

01-DN-197-6.14, Del Norte, CA

Built 2017 Load: 32.4 t ADT: 2,500

U.S. HIGHWAY 101

Good

Over: HUNTER CREEK

01-DN-101-8.51, Del Norte, CA

Built 2023 Load: 32.4 t ADT: 4,900

U.S. HIGHWAY 101

Good

Over: DOMINIE CREEK

01-DN-101-39.80, Del Norte, CA

Built 2021 Load: 32.4 t ADT: 7,250

FRED D. HAIGHT DR.

Good

Over: ROWDY CREEK

1/2 MI S OF RTE 101, Del Norte, CA

Built 1989 Load: 32.4 t ADT: 2,600

PATRICK'S CREEK RD

Good

Over: SHELLY CREEK

2.3 MILE N/O US HWY 199, Del Norte, CA

Built 1976 Load: 32.4 t ADT: 50

SOUTH FORK ROAD

Good

Over: SOUTH FORK SMITH RIVER

6.5 MI SE JCT RTE 199, Del Norte, CA

Built 1981 Load: 32.4 t ADT: 334

MINOT CREEK ROAD

Good

Over: MYNOT CREEK

0.1 MI E OF RTE 101, Del Norte, CA

Built 2005 Load: 32.4 t ADT: 85

SOUTH FORK ROAD

Good

Over: HURDYGURDY CREEK

14.2 MI SE OF JCT SR199, Del Norte, CA

Built 2014 Load: 32.4 t ADT: 300

BIG FLAT ROAD, 405

Good

Over: HURDYGURDY CREEK

2.6 MI N/O S FORK ROAD, Del Norte, CA

Built 2018 Load: 32.4 t ADT: 100

SOUTH FORK ROAD

Good

Over: SOUTH FORK SMITH RIVER

0.4 MI SE OF US 199, Del Norte, CA

Built 2017 Load: 32.4 t ADT: 568

COUNTY ROAD 305

Good

Over: NORTH FORK SMITH RIVER

12 MI E JCT ROWDY CREK RD, Del Norte, CA

Built 1981 Load: 32.7 t ADT: 10

U.S. HIGHWAY 199

Good

Over: SMITH RIVER

01-DN-199-R11.95, Del Norte, CA

Built 1985 Load: 33.4 t ADT: 3,750

U.S. HIGHWAY 101

Good

Over: SMITH RIVER OVERFLOW

01-DN-101-35.77, Del Norte, CA

Built 1955 Load: 33.7 t ADT: 6,700

U.S. HIGHWAY 199

Good

Over: MIDDLE FORK SMITH RIVER

01-DN-199-R17.06, Del Norte, CA

Built 1965 Load: 34.0 t ADT: 3,100

SOUTH FORK ROAD

Good

Over: SOUTH FORK SMITH RIVER

13.0 MI SE JCT SR199, Del Norte, CA

Built 2014 Load: 35.3 t ADT: 334

ROWDY CREEK ROAD

Good

Over: ROWDY CREEK

1.75 MI E OF RTE 101, Del Norte, CA

Built 1962 Load: 36.6 t ADT: 145

U.S. HIGHWAY 101

Good

Over: WILSON CREEK

01-DN-101-12.64, Del Norte, CA

Built 1957 Load: 38.2 t ADT: 4,700

SOUTH FORK ROAD

Good

Over: BOULDER CREEK

9.2 MI SE JCT US 199, Del Norte, CA

Built 2009 Load: 38.2 t ADT: 344

SOUTH FORK ROAD

Good

Over: ROCK CREEK

8.1 MI SE JCT US 199, Del Norte, CA

Built 2009 Load: 39.5 t ADT: 334

U.S. HIGHWAY 199

Good

Over: MIDDLE FORK SMITH RIVER

01-DN-199-19.99, Del Norte, CA

Built 1962 Load: 42.1 t ADT: 3,100

US HIGHWAY 199 NB

Good

Over: HILLSIDE ABOVE RIVER

01-DN-199-R18.26, Del Norte, CA

Built 1976 Load: 46.7 t ADT: 3,100

CRAZY PEAK ROAD

Good

Over: DUNN CREEK

12MI S & 2MI E OF 97523, Del Norte, CA

Built 1988 Load: 48.1 t ADT: 12

US HIGHWAY 199 NB

Good

Over: HILLSIDE ABOVE RIVER

01-DN-199-8.66, Del Norte, CA

Built 1979 Load: 49.9 t ADT: 3,750

NO DATA ENTERED

Good

Over: GRIFFIN CREEK

S29 T18N R4E, Del Norte, CA

Built 1978 Load: 60.6 t ADT: 50

ROCK CREEK ROAD

Poor

Over: EAST FORK MILL CREEK

4.1 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 11.0 t ADT: 10

CHILD'S HILL ROAD

Poor

Over: ROCK CREEK

8.8 MI SE OF HAMILTON RD, Del Norte, CA

Built 1950 Load: 13.9 t ADT: 10

CHILD'S HILL ROAD

Poor

Over: JANE CREEK

10.3 MI SE OF HAMILTON RD, Del Norte, CA

Built 1950 Load: 18.1 t ADT: 5

SALT CREEK RD

Poor

Over: SALT CREEK

0.1 MI N/O REQUA RD, Del Norte, CA

Built 1975 Load: 21.1 t ADT: 5

CHAPMAN STREET

Poor

Over: HOPPOW CREEK

WEST OF ROUTE 101/169 SEP, Del Norte, CA

Built 1965 Load: 24.3 t ADT: 20

HAMILTON ROAD

Poor

Over: FIRST GULCH

3.1 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 31.4 t ADT: 10

OLD GASQUET TOLL

Poor

Over: EIGHTEEN MILE CREEK

5 MI FROM ROUTE 199, Del Norte, CA

Built 1970 Load: 34.3 t ADT: 20

CHILD'S HILL ROAD

Poor

Over: BUMMER LAKE CREEK

4.5 MI EAST OF US 101, Del Norte, CA

Built 1950 Load: 36.3 t ADT: 10

HAMILTON ROAD

Structurally Deficient

Over: WEST BRANCH MILL CREEK

2.1 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 4.9 t ADT: 25

WEST BRANCH ROAD

Structurally Deficient

Over: WEST BRANCH MILL CREEK

5.4 MI S OF HAMILTON ROAD, Del Norte, CA

Built 1950 Load: 4.9 t ADT: 10

CHILD'S HILL ROAD

Structurally Deficient

Over: EAST FORK MILL CREEK

5.3 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 4.9 t ADT: 10

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

Related

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