US Bridges

IRR US a 89 over Johnson Run Wash

Fair

Coconino County, Arizona · 5.8 MI S JCT SR 389 · Structure no. 05216

Built
1940
85 years old
Condition
Fair
inspected July 2021
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
852
2019 count
Owner
State
State Highway Agency

About this bridge

IRR US a 89 over Johnson Run Wash is a concrete continuous culvert carrying IRR US a 89 over Johnson Run Wash in Coconino County, Arizona. It was built in 1940, so it is 85 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 852 vehicles a day, roughly 9% of them trucks, projected to reach 862 by 2039. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 31.7 mi (51 km).

Location

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CarriesIRR US a 89
CrossesJohnson Run Wash
Location5.8 MI S JCT SR 389
RouteU.S. Route 89
CountyCoconino County
StateArizona
Coordinates36.9176, -112.4315
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 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 traffic852 (2019)
Projected traffic862 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 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 IRR US a 89 over Johnson Run Wash built?

It was built in 1940, making it 85 years old in 2025.

What condition is IRR US a 89 over Johnson Run 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 July 2021.

How much traffic does IRR US a 89 over Johnson Run Wash carry?

About 852 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is IRR US a 89 over Johnson Run Wash?

The structure is 37 ft (11.3 m) long with a longest span of 10 ft (3 m).

Who owns IRR US a 89 over Johnson Run Wash?

It is owned by the State Highway Agency.