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)

Sort:

HILL ROAD EAST

Over: STATE ROUTE 29

01-LAK-029-R43.75, Lake, CA

Built 1972 ADT: 13,450

LAKEPORT BLVD

Over: STATE ROUTE 29

01-LAK-029-R41.42, Lake, CA

Built 1972 ADT: 13,450

STATE ROUTE 29

Over: HILL ROAD

01-LAK-029-R46.68, Lake, CA

Built 1972 ADT: 30

STATE ROUTE 29

Over: HILL ROAD

01-LAK-029-R46.68, Lake, CA

Built 1972 ADT: 30

STATE ROUTE 29

Over: LUCERNE CUT-OFF

01-LAK-029-R47.85, Lake, CA

Built 1972 ADT: 30

STATE ROUTE 29

Over: LUCERNE CUT-OFF

01-LAK-029-R47.85, Lake, CA

Built 1972 ADT: 30

PARK WAY

Over: STATE ROUTE 29

01-LAK-029-R45.14, Lake, CA

Built 1972 ADT: 13,450

ROAD

Over: STREAM

EEL RIVER, Lake, CA

Built 1962 ADT: 50

RANCHERIA ROAD

Over: MIDDLE CREEK

0.5 MI W ELK MOUNTAIN RD, Lake, CA

Built 1958 Load: 12.0 t ADT: 315

WARDLAW ST

Over: SAINT HELENA CREEK

0.15 MI E SR 29 IN MIDLTN, Lake, CA

Built 1908 Load: 15.2 t ADT: 114

PETERSON LANE

Over: ADOBE CREEK

0.5 MI W ADOBE CREEK RD, Lake, CA

Built 1950 Load: 15.2 t ADT: 23

WITTER SPRINGS RD

Over: COOPER CREEK

0.6 MI N OF SR 20, Lake, CA

Built 1935 Load: 15.2 t ADT: 212

SCOTTS VALLEY ROAD

Over: HENDRICKS CREEK

0.14 W/O EICKHOFF RD, Lake, CA

Built 1925 Load: 15.6 t ADT: 594

BARTLETT SPRING RD

Over: BARTLETT CREEK

13.7 MI NE OF SR 20, Lake, CA

Built 1960 Load: 20.7 t ADT: 80

SODA BAY RD

Over: KELSEY CREEK

4.9 MI E/O SR 29, Lake, CA

Built 1961 Load: 21.4 t ADT: 2,108

FINLEY EAST ROAD

Over: ADOBE CREEK

0.1 MI E OF STONE DR, Lake, CA

Built 1970 Load: 22.0 t ADT: 309

COPSEY CREEK WAY

Over: COPSEY CREEK

0.05 MI W QUARTERHORSE LN, Lake, CA

Built 1965 Load: 22.7 t ADT: 200

SODA BAY RD

Over: ADOBE CREEK

2.7 MI E OF SR 29, Lake, CA

Built 1957 Load: 23.3 t ADT: 2,060

ELK MTN RD

Over: WEST FORK MIDDLE CREEK

8.74 MI N S.R. 20, Lake, CA

Built 1966 Load: 24.0 t ADT: 1,000

ROSE ANDERSON RD

Over: ANDERSON CREEK

ANDERSON SPRINGS RD, Lake, CA

Built 1945 Load: 24.0 t ADT: 104

MORGAN VALLEY RD

Over: COPSEY CREEK

1.0 MI E SR 29 & SR 53, Lake, CA

Built 1965 Load: 24.3 t ADT: 1,800

E HGHLND SPRING RD

Over: HIGHLAND CREEK

0.1 MI S HIGHLAND SPGS RD, Lake, CA

Built 1960 Load: 24.3 t ADT: 618

MARTIN ST

Over: FORBES CREEK

0.6 MI EAST OF SR 29, Lake, CA

Built 1970 Load: 24.3 t ADT: 1,046

KONOCTI

Over: SCHINDLER CREEK

0.05 MI W KEYES BLVD, Lake, CA

Built 1965 Load: 24.3 t ADT: 320

KONOCTI VIEW

Over: CLEAR LAKE OAKS CHANNEL

0.05 MI W LAKELAND ST, Lake, CA

Built 1965 Load: 24.3 t ADT: 150

BLUE HERON COURT

Over: CLEAR LAKE OAKS CHANNEL

0.05 MI SE ISLAND CIRCLE, Lake, CA

Built 1965 Load: 24.3 t ADT: 150

BLUE HERON COURT

Over: CLEAR LAKE OAKS CHANNEL

0.05 MI NW ISLAND CIRCLE, Lake, CA

Built 1965 Load: 24.3 t ADT: 60

ELK MTN RD

Over: OVERFLOW CHANNEL

1.38 MI N OF SR 20, Lake, CA

Built 1958 Load: 24.6 t ADT: 1,061

NICE-LUCERNE CUTOF

Over: RODMAN NARROWS(CLEAR LAK

1.2 MI E/O SR 29, Lake, CA

Built 1958 Load: 25.6 t ADT: 5,315

BOAT LAUNCH RMP RD

Over: COLE CREEK

CLEAR LAKE STATE PARK, Lake, CA

Built 1970 Load: 26.9 t ADT: 104

STATE ROUTE 29

Over: 11TH STREET

01-LAK-029-R42.68, Lake, CA

Built 1972 Load: 29.8 t ADT: 6,725

STATE ROUTE 29

Over: 11TH STREET

01-LAK-029-R42.68, Lake, CA

Built 1972 Load: 29.8 t ADT: 6,725

BIG VALLEY RD

Over: ADOBE CREEK

0.2 MI N THOMAS RD, Lake, CA

Built 1963 Load: 30.1 t ADT: 2,962

BIG CANYON RD

Over: PUTAH CREEK

0.5 MI N OF SR 175, Lake, CA

Built 1961 Load: 30.5 t ADT: 820

WITTER SPRINGS RD

Over: COOPER CREEK

WITTER SPR RD W/O EAST RD, Lake, CA

Built 1935 Load: 30.8 t ADT: 123

BIG CANYON RD

Over: BIG CANYON CREEK

8 MI NORTH OF SR 29, Lake, CA

Built 1930 Load: 32.1 t ADT: 208

STATE ROUTE 20

Over: NORTH FORK CACHE CREEK

01-LAK-020-37.07, Lake, CA

Built 1989 Load: 32.4 t ADT: 6,300

STATE ROUTE 29

Over: ROBINSON CREEK

01-LAK-029-50.82, Lake, CA

Built 1947 Load: 32.4 t ADT: 5,700

STATE ROUTE 20

Over: POLK JONES CATTLEPASS

01-LAK-020-9.41, Lake, CA

Built 1955 Load: 32.4 t ADT: 8,000

STATE ROUTE 29

Over: SCOTTS CREEK

01-LAK-029-52.11, Lake, CA

Built 1989 Load: 32.4 t ADT: 5,700

STATE ROUTE 29

Over: SEIGLER CREEK

01-LAK-029-20.37, Lake, CA

Built 1991 Load: 32.4 t ADT: 10,600

STATE ROUTE 29

Over: COLE CREEK

01-LAK-029-32.91, Lake, CA

Built 1959 Load: 32.4 t ADT: 10,350

SR 53

Over: CACHE CREEK

01-LAK-053-1.10, Lake, CA

Built 1997 Load: 32.4 t ADT: 8,500

STATE ROUTE 20

Over: PHIPPS CREEK

01-LAK-020-36.08, Lake, CA

Built 1993 Load: 32.4 t ADT: 6,300

LAKE ST

Over: CACHE CREEK

0.03 MI S/O DAM ROAD, Lake, CA

Built 1987 Load: 32.4 t ADT: 1,700

BIG VALLEY RD

Over: MCGOUGH SLOUGH

JUST SE ARGONAUT RD, Lake, CA

Built 1963 Load: 32.4 t ADT: 3,116

BIG VALLEY RD

Over: HILL CREEK

0.2 MI WEST OF FINLEY, Lake, CA

Built 1963 Load: 32.4 t ADT: 1,038

BURNS VALLEY RD

Over: BURNS VALLEY CREEK

NEAR CLEARLAKE HIGHLANDS, Lake, CA

Built 1990 Load: 32.4 t ADT: 1,200

JESSIE ST

Over: SEIGLER CANYON CREEK

0.1 MI E OF SR 53, Lake, CA

Built 1987 Load: 32.4 t ADT: 300

MERRITT ROAD

Over: KELSEY CREEK

500 FT E/O BIG VALLEY RD, Lake, CA

Built 2008 Load: 32.4 t ADT: 1,870

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

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Compiled by PlainBridges, Independent data publisher

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.