US Bridges

Hornitos Road over Eldorado Creek

Fair

Mariposa County, California · 0.4 MI SE Bear Valley RD · Structure no. 40C0014

Built
1956
69 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
38 ft
3 main spans
Daily traffic
130
2004 count
Owner
County
County Highway Agency

About this bridge

Hornitos Road over Eldorado Creek is a concrete continuous culvert carrying Hornitos Road over Eldorado Creek in Mariposa County, California. It was built in 1956, so it is 69 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 130 vehicles a day, roughly 3% of them trucks, projected to reach 530 by 2046. The structure is 38 ft (11.6 m) long and 28 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesHornitos Road
CrossesEldorado Creek
Location0.4 MI SE Bear Valley RD
RouteCounty Highway 0
CountyMariposa County
StateCalifornia
Coordinates37.49776, -120.23382
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2004)
Projected traffic530 by 2046
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Hornitos Road over Eldorado Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Hornitos Road over Eldorado 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 June 2024.

How much traffic does Hornitos Road over Eldorado Creek carry?

About 130 vehicles per day (2004 count), of which roughly 3% are trucks.

How long is Hornitos Road over Eldorado Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Hornitos Road over Eldorado Creek?

It is owned by the County Highway Agency.