US Bridges

I-10 EB over Cap Canal

Fair

La Paz County, Arizona · 21.1 MI E JCT US 60 · Structure no. 01409

Built
1982
43 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
137 ft
2 main spans
Daily traffic
15,203
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 EB over Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying I-10 EB over Cap Canal in La Paz County, Arizona. It was built in 1982, so it is 43 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 15,203 vehicles a day, roughly 39% of them trucks, projected to reach 15,213 by 2042. The structure is 137 ft (41.8 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10 EB
CrossesCap Canal
Location21.1 MI E JCT US 60
RouteInterstate 10
CountyLa Paz County
StateArizona
Coordinates33.61315, -113.64954
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span65 ft (19.8 m)
Deck width81 ft (24.6 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,203 (2023)
Projected traffic15,213 by 2042
Trucks39%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-10 EB over Cap Canal built?

It was built in 1982, making it 43 years old in 2025.

What condition is I-10 EB over Cap 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 February 2024.

How much traffic does I-10 EB over Cap Canal carry?

About 15,203 vehicles per day (2023 count), of which roughly 39% are trucks.

How long is I-10 EB over Cap Canal?

The structure is 137 ft (41.8 m) long with a longest span of 65 ft (19.8 m) and a deck 81 ft wide.

Who owns I-10 EB over Cap Canal?

It is owned by the State Highway Agency.