US Bridges

Bass Lake RD over Lewis Creek

Fair

Madera County, California · 0.1 MI S/E State RTE 41 · Structure no. 41C0071

Built
1933
92 years old, rebuilt 1970
Condition
Fair
inspected September 2021
Type
Culvert
Concrete
Length
29 ft
1 main span
Daily traffic
3,097
1976 count
Owner
County
County Highway Agency

About this bridge

Bass Lake RD over Lewis Creek is a concrete culvert carrying Bass Lake RD over Lewis Creek in Madera County, California. It was built in 1933 and reconstructed in 1970, so it is 92 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,097 vehicles a day, roughly 5% of them trucks, projected to reach 9,018 by 2043. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesBass Lake RD
CrossesLewis Creek
Location0.1 MI S/E State RTE 41
RouteCounty Highway 0
CountyMadera County
StateCalifornia
Coordinates37.36591, -119.62872
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span29 ft (8.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,097 (1976)
Projected traffic9,018 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bass Lake RD over Lewis Creek built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1970.

What condition is Bass Lake RD over Lewis Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2021.

How much traffic does Bass Lake RD over Lewis Creek carry?

About 3,097 vehicles per day (1976 count), of which roughly 5% are trucks.

How long is Bass Lake RD over Lewis Creek?

The structure is 29 ft (8.8 m) long with a longest span of 29 ft (8.8 m).

Who owns Bass Lake RD over Lewis Creek?

It is owned by the County Highway Agency.