US Bridges

State Route 20 over Bachelor Creek

Good

Lake County, California · 01-LAK-020-5.84 · Structure no. 14 0079

Built
2022
3 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
10,600
2019 count
Owner
State
State Highway Agency

About this bridge

State Route 20 over Bachelor Creek is a concrete culvert carrying State Route 20 over Bachelor Creek in Lake County, California. It was built in 2022, so it is 3 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10,600 vehicles a day, projected to reach 14,000 by 2042. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesState Route 20
CrossesBachelor Creek
Location01-LAK-020-5.84
RouteState Highway 20
CountyLake County
StateCalifornia
Coordinates39.16865, -122.95968
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length28 ft (8.6 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,600 (2019)
Projected traffic14,000 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 20 over Bachelor Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is State Route 20 over Bachelor Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does State Route 20 over Bachelor Creek carry?

About 10,600 vehicles per day (2019 count).

How long is State Route 20 over Bachelor Creek?

The structure is 28 ft (8.6 m) long with a longest span of 13 ft (4 m).

Who owns State Route 20 over Bachelor Creek?

It is owned by the State Highway Agency.