US Bridges

SR 260 over Pierce Wash

Fair

Navajo County, Arizona · 4.4 M E JCT SR 277 · Structure no. 01373

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
4,639
2022 count
Owner
State
State Highway Agency

About this bridge

SR 260 over Pierce Wash is a concrete continuous slab carrying SR 260 over Pierce Wash in Navajo County, Arizona. It was built in 1969, so it is 56 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 4,639 vehicles a day, roughly 15% of them trucks, projected to reach 4,649 by 2042. The structure is 81 ft (24.7 m) long and 36 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesSR 260
CrossesPierce Wash
Location4.4 M E JCT SR 277
RouteState Highway 260
CountyNavajo County
StateArizona
Coordinates34.39349, -110.51722
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
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.7 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,639 (2022)
Projected traffic4,649 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$2,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 260 over Pierce Wash built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR 260 over Pierce 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 October 2024.

How much traffic does SR 260 over Pierce Wash carry?

About 4,639 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is SR 260 over Pierce Wash?

The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns SR 260 over Pierce Wash?

It is owned by the State Highway Agency.