US Bridges

I 10; EB over Gila River

Fair

Pinal County, Arizona · 26.0 MI N of JCT I 8 · Structure no. 01085

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,337 ft
17 main spans
Daily traffic
30,354
2021 count
Owner
State
State Highway Agency

About this bridge

I 10; EB over Gila River is a prestressed concrete stringer/multi-beam or girder carrying I 10; EB over Gila River in Pinal County, Arizona. It was built in 1964, so it is 61 years old, older 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 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 30,354 vehicles a day, roughly 9% of them trucks, projected to reach 30,364 by 2041. The structure is 1,337 ft (407.5 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; EB
CrossesGila River
Location26.0 MI N of JCT I 8
RouteInterstate 10
CountyPinal County
StateArizona
Coordinates33.15036, -111.86724
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length1,337 ft (407.5 m)
Longest span79 ft (24.1 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,354 (2021)
Projected traffic30,364 by 2041
Trucks9%
Lanes on structure2
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 10; EB over Gila River built?

It was built in 1964, making it 61 years old in 2025.

What condition is I 10; EB over Gila 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 February 2023.

How much traffic does I 10; EB over Gila River carry?

About 30,354 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I 10; EB over Gila River?

The structure is 1,337 ft (407.5 m) long with a longest span of 79 ft (24.1 m) and a deck 35 ft wide.

Who owns I 10; EB over Gila River?

It is owned by the State Highway Agency.