Del Norte County, CA

96 public highway bridges

Del Norte County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Del Norte County, California contains 96 public highway bridges. Roughly 47.9% are rated “Good,” 36.5% “Fair,” and 11.5% “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.

96
Total Bridges
47.9%
Good
36.5%
Fair
11.5%
Poor Condition

Condition Distribution

Good
47.9% (46)
Fair
36.5% (35)
Poor
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

HAMILTON ROAD

Poor

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

Poor

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

Poor

Over: EAST FORK MILL CREEK

5.3 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 4.9 t ADT: 10

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

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.