US Bridges

S Frontage Road over Wash

Fair

Navajo County, Arizona · 15.4 MI E JCT SR 87 · Structure no. 06727

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
44 ft
4 main spans
Daily traffic
1,000
2021 count
Owner
State
State Highway Agency

About this bridge

S Frontage Road over Wash is a concrete continuous culvert carrying S Frontage Road over Wash in Navajo County, Arizona. It was built in 1980, so it is 45 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 1,000 vehicles a day, roughly 5% of them trucks, projected to reach 1,010 by 2041. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS Frontage Road
CrossesWash
Location15.4 MI E JCT SR 87
RouteState Highway 40
CountyNavajo County
StateArizona
Coordinates34.95894, -110.37475
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating83 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length44 ft (13.4 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 traffic1,000 (2021)
Projected traffic1,010 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 S Frontage Road over Wash built?

It was built in 1980, making it 45 years old in 2025.

What condition is S Frontage Road 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 April 2023.

How much traffic does S Frontage Road over Wash carry?

About 1,000 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is S Frontage Road over Wash?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m).

Who owns S Frontage Road over Wash?

It is owned by the State Highway Agency.