US Bridges

I-10 WB over San Simon River

Fair

Cochise County, Arizona · 25.7 MI E JCT US 191 · Structure no. 01168

Built
1967
58 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
232 ft
8 main spans
Daily traffic
5,502
2022 count
Owner
State
State Highway Agency

About this bridge

I-10 WB over San Simon River is a concrete continuous slab carrying I-10 WB over San Simon River in Cochise County, Arizona. It was built in 1967, so it is 58 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 5,502 vehicles a day, roughly 51% of them trucks, projected to reach 5,512 by 2042. The structure is 232 ft (70.7 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 WB
CrossesSan Simon River
Location25.7 MI E JCT US 191
RouteInterstate 10
CountyCochise County
StateArizona
Coordinates32.25846, -109.20629
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 rating65 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,502 (2022)
Projected traffic5,512 by 2042
Trucks51%
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 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-10 WB over San Simon River built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-10 WB over San Simon 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 September 2023.

How much traffic does I-10 WB over San Simon River carry?

About 5,502 vehicles per day (2022 count), of which roughly 51% are trucks.

How long is I-10 WB over San Simon River?

The structure is 232 ft (70.7 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns I-10 WB over San Simon River?

It is owned by the State Highway Agency.