US Bridges

SR 80 over Tombstone Canyon

Fair

Cochise County, Arizona · 0.4 MI South of JCT SR 90 · Structure no. 00480

Built
1930
95 years old, rebuilt 1956
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
3 main spans
Daily traffic
5,426
2022 count
Owner
State
State Highway Agency

About this bridge

SR 80 over Tombstone Canyon is a steel stringer/multi-beam or girder carrying SR 80 over Tombstone Canyon in Cochise County, Arizona. It was built in 1930 and reconstructed in 1956, so it is 95 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 5,426 vehicles a day, roughly 10% of them trucks, projected to reach 5,436 by 2042. The structure is 110 ft (33.5 m) long and 32 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesSR 80
CrossesTombstone Canyon
Location0.4 MI South of JCT SR 90
RouteState Highway 80
CountyCochise County
StateArizona
Coordinates31.5112, -110.0171
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,426 (2022)
Projected traffic5,436 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemYes

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 Tombstone Canyon built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1956.

What condition is SR 80 over Tombstone 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 July 2023.

How much traffic does SR 80 over Tombstone Canyon carry?

About 5,426 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SR 80 over Tombstone Canyon?

The structure is 110 ft (33.5 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns SR 80 over Tombstone Canyon?

It is owned by the State Highway Agency.