US Bridges

Cole RD over Central Main Canal

Fair

Imperial County, California · 160 Ft E/O Bowker RD · Structure no. 58C0110

Built
1971
54 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
123 ft
4 main spans
Daily traffic
4,900
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cole RD over Central Main Canal is a concrete continuous slab carrying Cole RD over Central Main Canal in Imperial County, California. It was built in 1971, so it is 54 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 4,900 vehicles a day, roughly 3% of them trucks, projected to reach 5,147 by 2042. The structure is 123 ft (37.5 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCole RD
CrossesCentral Main Canal
Location160 Ft E/O Bowker RD
RouteCounty Highway 0
CountyImperial County
StateCalifornia
Coordinates32.69393, -115.4645
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 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 rating68.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2020)
Projected traffic5,147 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Cole RD over Central Main Canal built?

It was built in 1971, making it 54 years old in 2025.

What condition is Cole RD over Central Main 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 December 2023.

How much traffic does Cole RD over Central Main Canal carry?

About 4,900 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Cole RD over Central Main Canal?

The structure is 123 ft (37.5 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Cole RD over Central Main Canal?

It is owned by the City or Municipal Highway Agency.