US Bridges

Rancheria Road over Middle Creek

Fair

Lake County, California · 0.5 MI W Elk Mountain RD · Structure no. 14C0036

Built
1958
67 years old, rebuilt 1965
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete Continuous
Length
163 ft
4 main spans
Daily traffic
315
2009 count
Owner
County
County Highway Agency

About this bridge

Rancheria Road over Middle Creek is a concrete continuous tee beam carrying Rancheria Road over Middle Creek in Lake County, California. It was built in 1958 and reconstructed in 1965, so it is 67 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 315 vehicles a day, roughly 5% of them trucks, projected to reach 489 by 2046. The structure is 163 ft (49.7 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRancheria Road
CrossesMiddle Creek
Location0.5 MI W Elk Mountain RD
RouteCounty Highway 0
Coordinates39.18259, -122.91211
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.3 US tons
Inventory rating13.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic315 (2009)
Projected traffic489 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rancheria Road over Middle Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1965.

What condition is Rancheria Road over Middle 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 February 2024.

How much traffic does Rancheria Road over Middle Creek carry?

About 315 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Rancheria Road over Middle Creek?

The structure is 163 ft (49.7 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns Rancheria Road over Middle Creek?

It is owned by the County Highway Agency.