US Bridges

Hornitos Road over Turner Creek

Fair

Mariposa County, California · 0.1 MI E Indian Gulch RD · Structure no. 40C0013

Built
1956
69 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
150
2004 count
Owner
County
County Highway Agency

About this bridge

Hornitos Road over Turner Creek is a concrete continuous culvert carrying Hornitos Road over Turner 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 150 vehicles a day, roughly 3% of them trucks, projected to reach 175 by 2042. The structure is 25 ft (7.6 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesHornitos Road
CrossesTurner Creek
Location0.1 MI E Indian Gulch RD
RouteCounty Highway 0
Coordinates37.48789, -120.21441
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 alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length25 ft (7.6 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 traffic150 (2004)
Projected traffic175 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Turner Creek built?

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

What condition is Hornitos Road over Turner 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 Turner Creek carry?

About 150 vehicles per day (2004 count), of which roughly 3% are trucks.

How long is Hornitos Road over Turner Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Hornitos Road over Turner Creek?

It is owned by the County Highway Agency.