US Bridges

East Avenue over Mustang Creek

Fair

Merced County, California · 1.0 MI E Newport RD · Structure no. 39C0074

Built
1939
86 years old, rebuilt 1976
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
1,308
2008 count
Owner
County
County Highway Agency

About this bridge

East Avenue over Mustang Creek is a concrete slab carrying East Avenue over Mustang Creek in Merced County, California. It was built in 1939 and reconstructed in 1976, so it is 86 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 1,308 vehicles a day, roughly 30% of them trucks, projected to reach 927 by 2041. The structure is 22 ft (6.7 m) long and 32 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesEast Avenue
CrossesMustang Creek
Location1.0 MI E Newport RD
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.49177, -120.68524
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 protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating28.5 US tons
Inventory rating17.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,308 (2008)
Projected traffic927 by 2041
Trucks30%
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 East Avenue over Mustang Creek built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1976.

What condition is East Avenue over Mustang 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 October 2023.

How much traffic does East Avenue over Mustang Creek carry?

About 1,308 vehicles per day (2008 count), of which roughly 30% are trucks.

How long is East Avenue over Mustang Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns East Avenue over Mustang Creek?

It is owned by the County Highway Agency.