US Bridges

SR 89A over Oak CR Pumphouse Wash

Fair

Coconino County, Arizona · 14.2 MI S of JCT I-40 · Structure no. 00079

Built
1931
94 years old, rebuilt 2022
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
160 ft
5 main spans
Daily traffic
6,301
2022 count
Owner
State
State Highway Agency

About this bridge

SR 89A over Oak CR Pumphouse Wash is a steel stringer/multi-beam or girder carrying SR 89A over Oak CR Pumphouse Wash in Coconino County, Arizona. It was built in 1931 and reconstructed in 2022, 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 6,301 vehicles a day, roughly 5% of them trucks, projected to reach 6,311 by 2042. The structure is 160 ft (48.8 m) long and 32 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

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CarriesSR 89A
CrossesOak CR Pumphouse Wash
Location14.2 MI S of JCT I-40
RouteState Highway 89
CountyCoconino County
StateArizona
Coordinates35.0248, -111.7358
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length160 ft (48.8 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,301 (2022)
Projected traffic6,311 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 89A over Oak CR Pumphouse Wash built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2022.

What condition is SR 89A over Oak CR Pumphouse 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 2023.

How much traffic does SR 89A over Oak CR Pumphouse Wash carry?

About 6,301 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is SR 89A over Oak CR Pumphouse Wash?

The structure is 160 ft (48.8 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns SR 89A over Oak CR Pumphouse Wash?

It is owned by the State Highway Agency.