US Bridges

SR 77 over Wash

Fair

Navajo County, Arizona · 1.0 MI N JCT SR 277 · Structure no. 04409

Built
1942
83 years old, rebuilt 2014
Condition
Fair
inspected June 2021
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
3,659
2019 count
Owner
State
State Highway Agency

About this bridge

SR 77 over Wash is a concrete continuous culvert carrying SR 77 over Wash in Navajo County, Arizona. It was built in 1942 and reconstructed in 2014, so it is 83 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 3,659 vehicles a day, roughly 10% of them trucks, projected to reach 3,669 by 2041. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 39.8 mi (64 km).

Location

Open in Google Maps
CarriesSR 77
CrossesWash
Location1.0 MI N JCT SR 277
RouteState Highway 77
CountyNavajo County
StateArizona
Coordinates34.52743, -110.08103
Functional classUrban Other Principal 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,659 (2019)
Projected traffic3,669 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 77 over Wash built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 2014.

What condition is SR 77 over 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 June 2021.

How much traffic does SR 77 over Wash carry?

About 3,659 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is SR 77 over Wash?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns SR 77 over Wash?

It is owned by the State Highway Agency.