US Bridges

Rutherford RD(S26) over Alamo River

Fair

Imperial County, California · 2.3 MI W/O State RTE 115 · Structure no. 58C0019

Built
1979
46 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
147 ft
4 main spans
Daily traffic
1,000
2023 count
Owner
County
County Highway Agency

About this bridge

Rutherford RD(S26) over Alamo River is a concrete continuous slab carrying Rutherford RD(S26) over Alamo River in Imperial County, California. It was built in 1979, so it is 46 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 1,000 vehicles a day, roughly 2% of them trucks, projected to reach 1,291 by 2045. The structure is 147 ft (44.8 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRutherford RD(S26)
CrossesAlamo River
Location2.3 MI W/O State RTE 115
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates33.04456, -115.48856
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99.6 US tons
Inventory rating60 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,291 by 2045
Trucks2%
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 Rutherford RD(S26) over Alamo River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Rutherford RD(S26) over Alamo River 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 December 2023.

How much traffic does Rutherford RD(S26) over Alamo River carry?

About 1,000 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Rutherford RD(S26) over Alamo River?

The structure is 147 ft (44.8 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns Rutherford RD(S26) over Alamo River?

It is owned by the County Highway Agency.