US Bridges

Hornitos Road over Bear Creek

Fair

Mariposa County, California · 3.6 MI N of SR 140 · Structure no. 40C0008

Built
1948
77 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
53 ft
2 main spans
Daily traffic
350
2004 count
Owner
County
County Highway Agency

About this bridge

Hornitos Road over Bear Creek is a concrete continuous slab carrying Hornitos Road over Bear Creek in Mariposa County, California. It was built in 1948, so it is 77 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 5 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 350 vehicles a day, roughly 2% of them trucks, projected to reach 754 by 2046. The structure is 53 ft (16.2 m) long and 27 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesHornitos Road
CrossesBear Creek
Location3.6 MI N of SR 140
RouteCounty Highway 0
Coordinates37.47792, -120.11351
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.8 US tons
Inventory rating18.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span26 ft (7.9 m)
Deck width27 ft (8.1 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2004)
Projected traffic754 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 Bear Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Hornitos Road over Bear 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 Bear Creek carry?

About 350 vehicles per day (2004 count), of which roughly 2% are trucks.

How long is Hornitos Road over Bear Creek?

The structure is 53 ft (16.2 m) long with a longest span of 26 ft (7.9 m) and a deck 27 ft wide.

Who owns Hornitos Road over Bear Creek?

It is owned by the County Highway Agency.