US Bridges

Arboleda Road over Duck Slough

Fair

Merced County, California · 0.1 MI S Mchenry Rd. · Structure no. 39C0369

Built
2007
18 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
71 ft
2 main spans
Daily traffic
1,288
2018 count
Owner
County
County Highway Agency

About this bridge

Arboleda Road over Duck Slough is a concrete continuous slab carrying Arboleda Road over Duck Slough in Merced County, California. It was built in 2007, so it is 18 years old, younger 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 1,288 vehicles a day, roughly 7% of them trucks, projected to reach 1,601 by 2042. The structure is 71 ft (21.5 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesArboleda Road
CrossesDuck Slough
Location0.1 MI S Mchenry Rd.
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.25696, -120.37916
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
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.8 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length71 ft (21.5 m)
Longest span34 ft (10.4 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,288 (2018)
Projected traffic1,601 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Arboleda Road over Duck Slough built?

It was built in 2007, making it 18 years old in 2025.

What condition is Arboleda Road over Duck Slough 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 2024.

How much traffic does Arboleda Road over Duck Slough carry?

About 1,288 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Arboleda Road over Duck Slough?

The structure is 71 ft (21.5 m) long with a longest span of 34 ft (10.4 m) and a deck 35 ft wide.

Who owns Arboleda Road over Duck Slough?

It is owned by the County Highway Agency.