US Bridges

I 10 WB over Santa Rosa Cap Canal

Fair

Pinal County, Arizona · 5.4 MI S JCT I-8 · Structure no. 01427

Built
1986
39 years old, rebuilt 2012
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
21,125
2023 count
Owner
State
State Highway Agency

About this bridge

I 10 WB over Santa Rosa Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying I 10 WB over Santa Rosa Cap Canal in Pinal County, Arizona. It was built in 1986 and reconstructed in 2012, so it is 39 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 21,125 vehicles a day, roughly 22% of them trucks, projected to reach 21,135 by 2042. The structure is 70 ft (21.3 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10 WB
CrossesSanta Rosa Cap Canal
Location5.4 MI S JCT I-8
RouteInterstate 10
CountyPinal County
StateArizona
Coordinates32.7714, -111.6098
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span68 ft (20.7 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,125 (2023)
Projected traffic21,135 by 2042
Trucks22%
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 WB over Santa Rosa Cap Canal built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2012.

What condition is I 10 WB over Santa Rosa 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 January 2024.

How much traffic does I 10 WB over Santa Rosa Cap Canal carry?

About 21,125 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I 10 WB over Santa Rosa Cap Canal?

The structure is 70 ft (21.3 m) long with a longest span of 68 ft (20.7 m) and a deck 63 ft wide.

Who owns I 10 WB over Santa Rosa Cap Canal?

It is owned by the State Highway Agency.