US Bridges

I-10 WB over Island Wash

Fair

Cochise County, Arizona · 33.4 MI E JCT US 191 · Structure no. 00210

Built
1938
87 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
101 ft
4 main spans
Daily traffic
8,919
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 WB over Island Wash is a concrete continuous slab carrying I-10 WB over Island Wash in Cochise County, Arizona. It was built in 1938, so it is 87 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 8,919 vehicles a day, roughly 45% of them trucks, projected to reach 8,929 by 2042. The structure is 101 ft (30.8 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-10 WB
CrossesIsland Wash
Location33.4 MI E JCT US 191
RouteInterstate 10
CountyCochise County
StateArizona
Coordinates32.2359, -109.07701
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 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length101 ft (30.8 m)
Longest span25 ft (7.6 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,919 (2022)
Projected traffic8,929 by 2042
Trucks45%
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$1,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-10 WB over Island Wash built?

It was built in 1938, making it 87 years old in 2025.

What condition is I-10 WB 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 WB over Island Wash carry?

About 8,919 vehicles per day (2022 count), of which roughly 45% are trucks.

How long is I-10 WB over Island Wash?

The structure is 101 ft (30.8 m) long with a longest span of 25 ft (7.6 m) and a deck 37 ft wide.

Who owns I-10 WB over Island Wash?

It is owned by the State Highway Agency.