US Bridges

IRR US 89 over Wash

Fair

Coconino County, Arizona · 7.7 MI N JCT US 160 · Structure no. 04824

Built
1931
94 years old, rebuilt 1961
Condition
Fair
inspected August 2022
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
3,754
2020 count
Owner
State
State Highway Agency

About this bridge

IRR US 89 over Wash is a concrete continuous culvert carrying IRR US 89 over Wash in Coconino County, Arizona. It was built in 1931 and reconstructed in 1961, so it is 94 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 3,754 vehicles a day, roughly 16% of them trucks, projected to reach 3,764 by 2040. The structure is 21 ft (6.4 m) long and 58 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR US 89
CrossesWash
Location7.7 MI N JCT US 160
RouteU.S. Route 89
CountyCoconino County
StateArizona
Coordinates36.1879, -111.3942
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width58 ft (17.8 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,754 (2020)
Projected traffic3,764 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 89 over Wash built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1961.

What condition is IRR US 89 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 August 2022.

How much traffic does IRR US 89 over Wash carry?

About 3,754 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is IRR US 89 over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 58 ft wide.

Who owns IRR US 89 over Wash?

It is owned by the State Highway Agency.