US Bridges

I-10; Wfr over Earp Wash Trib

Good

Pima County, Arizona · 7.3 MI E JCT I-19 · Structure no. 01052

Built
1960
65 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
94 ft
4 main spans
Daily traffic
1,320
2023 count
Owner
State
State Highway Agency

About this bridge

I-10; Wfr over Earp Wash Trib is a concrete continuous slab carrying I-10; Wfr over Earp Wash Trib in Pima County, Arizona. It was built in 1960, so it is 65 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,320 vehicles a day, roughly 10% of them trucks, projected to reach 1,330 by 2042. The structure is 94 ft (28.7 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-10; Wfr
CrossesEarp Wash Trib
Location7.3 MI E JCT I-19
RouteState Highway 10
CountyPima County
StateArizona
Coordinates32.12918, -110.88079
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length94 ft (28.7 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,320 (2023)
Projected traffic1,330 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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; Wfr over Earp Wash Trib built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-10; Wfr over Earp Wash Trib in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does I-10; Wfr over Earp Wash Trib carry?

About 1,320 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is I-10; Wfr over Earp Wash Trib?

The structure is 94 ft (28.7 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns I-10; Wfr over Earp Wash Trib?

It is owned by the State Highway Agency.