US Bridges

SR 260 WB over Doubtful Canyon

Fair

Gila County, Arizona · 18.1 MI E JCT SR 87 · Structure no. 01495

Built
2013
12 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
540 ft
5 main spans
Daily traffic
4,449
2022 count
Owner
State
State Highway Agency

About this bridge

SR 260 WB over Doubtful Canyon is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 260 WB over Doubtful Canyon in Gila County, Arizona. It was built in 2013, so it is 12 years old, younger 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 4,449 vehicles a day, roughly 10% of them trucks, projected to reach 4,459 by 2042. The structure is 540 ft (164.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 260 WB
CrossesDoubtful Canyon
Location18.1 MI E JCT SR 87
RouteState Highway 260
CountyGila County
StateArizona
Coordinates34.32377, -111.07455
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating93 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length540 ft (164.6 m)
Longest span107 ft (32.6 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,449 (2022)
Projected traffic4,459 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 260 WB over Doubtful Canyon built?

It was built in 2013, making it 12 years old in 2025.

What condition is SR 260 WB over Doubtful 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 September 2024.

How much traffic does SR 260 WB over Doubtful Canyon carry?

About 4,449 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SR 260 WB over Doubtful Canyon?

The structure is 540 ft (164.6 m) long with a longest span of 107 ft (32.6 m) and a deck 45 ft wide.

Who owns SR 260 WB over Doubtful Canyon?

It is owned by the State Highway Agency.