US Bridges

SR 277 over Cottonwood Wash

Fair

Navajo County, Arizona · 0.3 MI W JCT SR 77 · Structure no. 01888

Built
1979
46 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
292 ft
10 main spans
Daily traffic
6,095
2022 count
Owner
State
State Highway Agency

About this bridge

SR 277 over Cottonwood Wash is a concrete continuous slab carrying SR 277 over Cottonwood Wash in Navajo County, Arizona. It was built in 1979, so it is 46 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 6,095 vehicles a day, roughly 3% of them trucks, projected to reach 6,105 by 2042. The structure is 292 ft (89 m) long and 49 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 277
CrossesCottonwood Wash
Location0.3 MI W JCT SR 77
RouteState Highway 277
CountyNavajo County
StateArizona
Coordinates34.51346, -110.08521
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length292 ft (89 m)
Longest span30 ft (9.1 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,095 (2022)
Projected traffic6,105 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 277 over Cottonwood Wash built?

It was built in 1979, making it 46 years old in 2025.

What condition is SR 277 over Cottonwood 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 277 over Cottonwood Wash carry?

About 6,095 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is SR 277 over Cottonwood Wash?

The structure is 292 ft (89 m) long with a longest span of 30 ft (9.1 m) and a deck 49 ft wide.

Who owns SR 277 over Cottonwood Wash?

It is owned by the State Highway Agency.