US Bridges

SR 80 over Walnut Canyon

Fair

Cochise County, Arizona · 1.6 MI S JCT SR 82 · Structure no. 00108

Built
1934
91 years old, rebuilt 1959
Condition
Fair
inspected February 2025
Type
Tee Beam
Concrete
Length
202 ft
5 main spans
Daily traffic
4,006
2021 count
Owner
State
State Highway Agency

About this bridge

SR 80 over Walnut Canyon is a concrete tee beam carrying SR 80 over Walnut Canyon in Cochise County, Arizona. It was built in 1934 and reconstructed in 1959, so it is 91 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 4,006 vehicles a day, roughly 12% of them trucks, projected to reach 4,016 by 2041. The structure is 202 ft (61.6 m) long and 33 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesSR 80
CrossesWalnut Canyon
Location1.6 MI S JCT SR 82
RouteState Highway 80
CountyCochise County
StateArizona
Coordinates31.7322, -110.0807
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
ScourFoundations stable; scour within limits of footing or piles
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 alignment6: Equal to present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length202 ft (61.6 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,006 (2021)
Projected traffic4,016 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 80 over Walnut Canyon built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1959.

What condition is SR 80 over Walnut Canyon 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 Walnut Canyon carry?

About 4,006 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is SR 80 over Walnut Canyon?

The structure is 202 ft (61.6 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns SR 80 over Walnut Canyon?

It is owned by the State Highway Agency.