US Bridges

Arroya Avenue over West Delta Canal

Fair

Merced County, California · 0.9 MI N of SR 152 · Structure no. 39C0275

Built
1930
95 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
40
2008 count
Owner
County
County Highway Agency

About this bridge

Arroya Avenue over West Delta Canal is a concrete continuous tee beam carrying Arroya Avenue over West Delta Canal in Merced County, California. It was built in 1930, so it is 95 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2042. The structure is 31 ft (9.4 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesArroya Avenue
CrossesWest Delta Canal
Location0.9 MI N of SR 152
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.06663, -120.67274
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2008)
Projected traffic160 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Arroya Avenue over West Delta Canal built?

It was built in 1930, making it 95 years old in 2025.

What condition is Arroya Avenue over West Delta Canal 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 November 2024.

How much traffic does Arroya Avenue over West Delta Canal carry?

About 40 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Arroya Avenue over West Delta Canal?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m) and a deck 18 ft wide.

Who owns Arroya Avenue over West Delta Canal?

It is owned by the County Highway Agency.