Lake County, CA

129 public highway bridges

Lake County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lake County, California contains 129 public highway bridges. Roughly 27.1% are rated “Good,” 59.7% “Fair,” and 7.8% “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.

129
Total Bridges
27.1%
Good
59.7%
Fair
7.8%
Poor Condition

Condition Distribution

Good
27.1% (35)
Fair
59.7% (77)
Poor
7.8% (10)

All Bridges (129)

ROAD M01

Fair

Over: RATTLESNAKE CREEK

40 MI. NORTH OF UPPERLAKE, Lake, CA

Built 1966 Load: 32.7 t ADT: 20

EICKHOFF RD

Fair

Over: SCOTTS CREEK

0.1 MI N/O SCOTTS VALLEY, Lake, CA

Built 1984 Load: 33.0 t ADT: 56

WOLF CREEK ROAD

Fair

Over: WOLF CREEK

IN SPRING VALLEY LAKE DEV, Lake, CA

Built 1967 Load: 33.7 t ADT: 220

ELK MOUNTAIN ROAD

Fair

Over: MIDDLE CREEK

5.08 MI N OF SR 20, Lake, CA

Built 1959 Load: 34.0 t ADT: 175

STATE ROUTE 53

Fair

Over: SEIGLER CREEK

01-LAK-053-0.02, Lake, CA

Built 1952 Load: 35.0 t ADT: 16,500

BELL PARK AVE

Fair

Over: SEIGLER CREEK

S SR 29 IN LOWER LAKE, Lake, CA

Built 1966 Load: 35.6 t ADT: 200

MAIN STREET

Fair

Over: KELSEY CREEK

JUST E/O BELL HILL ROAD, Lake, CA

Built 1946 Load: 36.3 t ADT: 3,502

SODA BAY RD

Fair

Over: MANNING CREEK

0.9 MI E/O SR 29, Lake, CA

Built 1956 Load: 36.3 t ADT: 1,545

STATE ROUTE 29

Fair

Over: MARTIN STREET

01-LAK-029-R42.00, Lake, CA

Built 1972 Load: 36.9 t ADT: 6,725

ARGONAUT ROAD

Fair

Over: ADOBE CREEK

0.1 MI W THOMAS LANE, Lake, CA

Built 1966 Load: 37.3 t ADT: 206

STATE ROUTE 20

Fair

Over: MORRISON CREEK

01-LAK-020-16.81, Lake, CA

Built 1933 Load: 37.6 t ADT: 8,900

STATE ROUTE 29

Fair

Over: MARTIN STREET

01-LAK-029-R42.00, Lake, CA

Built 1972 Load: 37.9 t ADT: 6,725

BARTLETT SPRGS RD

Fair

Over: CACHE CREEK

23.5 MI E OF SR 20, Lake, CA

Built 1982 Load: 37.9 t ADT: 108

STATE ROUTE 29

Fair

Over: COYOTE CREEK

01-LAK-029-11.89, Lake, CA

Built 1948 Load: 38.2 t ADT: 9,000

SCOTTS VALLEY ROAD

Fair

Over: SCOTTS CREEK

3.0 MI E OF HWY 29, Lake, CA

Built 1960 Load: 38.6 t ADT: 2,140

QUAIL TRAIL

Fair

Over: WOLF CREEK

IN SPRING VALLEY LAKE DEV, Lake, CA

Built 1967 Load: 38.6 t ADT: 36

KONOCTI RD

Fair

Over: COLE CREEK

1/4 MI E MAIN ST, Lake, CA

Built 1987 Load: 38.6 t ADT: 1,155

ROAD M1

Fair

Over: BENMORE CREEK

9 MI. NE OF POTTER VALLEY, Lake, CA

Built 1970 Load: 38.9 t ADT: 300

ANDERSON SPRINGS R

Fair

Over: ANDERSON CREEK

0.8 MI W OF SR 175, Lake, CA

Built 1940 Load: 40.2 t ADT: 154

BUTTS CYN RD

Fair

Over: BUCKSNORT CREEK

6.8 MI SE/O SR 29, Lake, CA

Built 1969 Load: 40.8 t ADT: 1,900

SPRUCE GROVE ROAD

Fair

Over: COPSEY CREEK

0.3 MI EAST OF SR 29, Lake, CA

Built 1995 Load: 41.1 t ADT: 512

STATE ROUTE 29

Fair

Over: LUPIYOMA CREEK

01-LAK-029-6.84, Lake, CA

Built 1955 Load: 41.8 t ADT: 10,900

STATE ROUTE 29

Fair

Over: ADOBE CREEK

01-LAK-029-R37.57, Lake, CA

Built 1966 Load: 42.1 t ADT: 12,100

BARTLETT SPRNGS RD

Fair

Over: COMPLEXION CREEK

28 MI E OF SR 20, Lake, CA

Built 1960 Load: 42.1 t ADT: 103

STATE ROUTE 175

Fair

Over: DRY CREEK

01-LAK-175-27.48, Lake, CA

Built 1952 Load: 42.8 t ADT: 3,150

STATE ROUTE 20

Fair

Over: CLOVER CREEK

01-LAK-020-8.89, Lake, CA

Built 1975 Load: 44.1 t ADT: 8,000

NEW LONG VALLEY RD

Fair

Over: LONG VALLEY CREEK

2.3 MI N/O SR 20, Lake, CA

Built 1984 Load: 48.6 t ADT: 346

SYLAR LANE

Fair

Over: COLE CREEK

0.2 MI E/O STATE STREET, Lake, CA

Built 1965 Load: 59.0 t ADT: 250

BRIDGE ARBOR RD

Fair

Over: ROBINSON CREEK

0.4 MI E OF SR 29, Lake, CA

Built 1925 Load: 59.3 t ADT: 65

BOTTLE ROCK ROAD

Fair

Over: COLE CREEK

0.15 MI S OF S.R. 29, Lake, CA

Built 1971 Load: 59.6 t ADT: 1,205

CLARK DRIVE

Fair

Over: COLE CREEK

0.7 MI S/O SODA BAY RD, Lake, CA

Built 1940 Load: 60.9 t ADT: 114

BARTLETT SPRGS RD

Fair

Over: STANTON CREEK

19.6 MI N OF SR 20, Lake, CA

Built 1960 Load: 73.5 t ADT: 108

BARTLETT SPRGS RD

Fair

Over: KILPEPPER CREEK

12 MI N OF SR 20, Lake, CA

Built 1960 Load: 80.4 t ADT: 103

SOCRATES MINE RD

Fair

Over: GUNNING CREEK

1.9 MI W/O STATE RTE 175, Lake, CA

Built 1981 Load: 97.2 t ADT: 546

ROAD

Good

Over: TROUT CREEK

TROUT CREEK, Lake, CA

Built 2016 ADT: 50

BRIDGE ARBOR N RD

Good

Over: CLOVER CREEK

SOUTH OF SR 20 IN UPER LK, Lake, CA

Built 1931 Load: 6.2 t ADT: 80

FIRST STREET

Good

Over: CLOVER CREEK

0.1 MI E MAIN ST UPER LK, Lake, CA

Built 1930 Load: 15.2 t ADT: 400

LAKESHORE BLVD

Good

Over: LYONS CREEK

0.5 MI S/O NICE-LUCERNE R, Lake, CA

Built 1931 Load: 16.8 t ADT: 1,066

STATE ROUTE 20

Good

Over: MIDDLE CREEK

01-LAK-020-8.56, Lake, CA

Built 1959 Load: 21.1 t ADT: 8,000

STATE ROUTE 175

Good

Over: PUTAH CREEK

01-LAK-175-R24.95, Lake, CA

Built 1964 Load: 23.3 t ADT: 3,150

STATE ROUTE 29

Good

Over: SAINT HELENA CREEK

01-LAK-029-6.31, Lake, CA

Built 1934 Load: 25.3 t ADT: 10,900

PITNEY LN

Good

Over: ALLEY CREEK

0.3 MI E OF ELK MTN RD, Lake, CA

Built 1958 Load: 25.6 t ADT: 321

ROAD M10

Good

Over: BEAR CREEK

24 MI. N.E. OF UPPERLAKE, Lake, CA

Built 1973 Load: 30.1 t ADT: 20

STATE ROUTE 29

Good

Over: PUTAH CREEK

01-LAK-029-9.74, Lake, CA

Built 2003 Load: 32.4 t ADT: 10,900

STATE ROUTE 29

Good

Over: KELSEY CREEK

01-LAK-029-R34.97, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

STATE ROUTE 29

Good

Over: HILL CREEK

01-LAK-029-R36.56, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

STATE ROUTE 29

Good

Over: MANNING CREEK

01-LAK-029-R38.91, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

SR 53

Good

Over: CACHE CREEK

01-LAK-053-1.00, Lake, CA

Built 1997 Load: 32.4 t ADT: 8,250

STATE ROUTE 20

Good

Over: BACHELOR CREEK

01-LAK-020-5.84, Lake, CA

Built 2022 Load: 32.4 t ADT: 10,600

STATE ROUTE 175

Good

Over: PUTAH CREEK

01-LAK-175-R24.00, Lake, CA

Built 1994 Load: 32.4 t ADT: 3,150

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.