US Bridges

SR 80 over Stronghold Wash

Fair

Cochise County, Arizona · 9.5 MI S JCT SR 10B · Structure no. 00095

Built
1933
92 years old, rebuilt 1957
Condition
Fair
inspected February 2025
Type
Slab
Concrete
Length
112 ft
5 main spans
Daily traffic
4,308
2021 count
Owner
State
State Highway Agency

About this bridge

SR 80 over Stronghold Wash is a concrete slab carrying SR 80 over Stronghold Wash in Cochise County, Arizona. It was built in 1933 and reconstructed in 1957, so it is 92 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 4,308 vehicles a day, roughly 20% of them trucks, projected to reach 4,318 by 2041. The structure is 112 ft (34.1 m) long and 39 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesSR 80
CrossesStronghold Wash
Location9.5 MI S JCT SR 10B
RouteState Highway 80
CountyCochise County
StateArizona
Coordinates31.8751, -110.2101
Functional classRural Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length112 ft (34.1 m)
Longest span22 ft (6.7 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,308 (2021)
Projected traffic4,318 by 2041
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 80 over Stronghold Wash built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1957.

What condition is SR 80 over Stronghold 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 February 2025.

How much traffic does SR 80 over Stronghold Wash carry?

About 4,308 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is SR 80 over Stronghold Wash?

The structure is 112 ft (34.1 m) long with a longest span of 22 ft (6.7 m) and a deck 39 ft wide.

Who owns SR 80 over Stronghold Wash?

It is owned by the State Highway Agency.