US Bridges

IRR US 89; FAP 037 over Moenkopi Wash

Fair

Coconino County, Arizona · 3.7 MI S JCT US 160 · Structure no. 02452

Built
1998
27 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
201 ft
2 main spans
Daily traffic
8,930
2022 count
Owner
State
State Highway Agency

About this bridge

IRR US 89; FAP 037 over Moenkopi Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying IRR US 89; FAP 037 over Moenkopi Wash in Coconino County, Arizona. It was built in 1998, so it is 27 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 8,930 vehicles a day, roughly 11% of them trucks, projected to reach 8,940 by 2042. The structure is 201 ft (61.3 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIRR US 89; FAP 037
CrossesMoenkopi Wash
Location3.7 MI S JCT US 160
RouteU.S. Route 89
CountyCoconino County
StateArizona
Coordinates36.02304, -111.39699
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length201 ft (61.3 m)
Longest span100 ft (30.5 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,930 (2022)
Projected traffic8,940 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 IRR US 89; FAP 037 over Moenkopi Wash built?

It was built in 1998, making it 27 years old in 2025.

What condition is IRR US 89; FAP 037 over Moenkopi 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 September 2024.

How much traffic does IRR US 89; FAP 037 over Moenkopi Wash carry?

About 8,930 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is IRR US 89; FAP 037 over Moenkopi Wash?

The structure is 201 ft (61.3 m) long with a longest span of 100 ft (30.5 m) and a deck 47 ft wide.

Who owns IRR US 89; FAP 037 over Moenkopi Wash?

It is owned by the State Highway Agency.