US Bridges

I-10 EB over Island Wash

Fair

Cochise County, Arizona · 33.4 MI E JCT US 191 · Structure no. 00658

Built
1961
64 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
111 ft
4 main spans
Daily traffic
6,818
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 EB over Island Wash is a concrete continuous slab carrying I-10 EB over Island Wash in Cochise County, Arizona. It was built in 1961, so it is 64 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 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 6,818 vehicles a day, roughly 43% of them trucks, projected to reach 6,828 by 2042. The structure is 111 ft (33.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-10 EB
CrossesIsland Wash
Location33.4 MI E JCT US 191
RouteInterstate 10
CountyCochise County
StateArizona
Coordinates32.2343, -109.0784
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.
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 inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length111 ft (33.8 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,818 (2022)
Projected traffic6,828 by 2042
Trucks43%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-10 EB over Island Wash built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-10 EB over Island Wash 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 September 2023.

How much traffic does I-10 EB over Island Wash carry?

About 6,818 vehicles per day (2022 count), of which roughly 43% are trucks.

How long is I-10 EB over Island Wash?

The structure is 111 ft (33.8 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns I-10 EB over Island Wash?

It is owned by the State Highway Agency.