US Bridges

IRR US 89 over Billy Goat Wash

Fair

Coconino County, Arizona · 20.1 MI N JCT US 160 · Structure no. 04830

Built
1958
67 years old
Condition
Fair
inspected August 2022
Type
Culvert
Concrete Continuous
Length
43 ft
4 main spans
Daily traffic
3,342
2020 count
Owner
State
State Highway Agency

About this bridge

IRR US 89 over Billy Goat Wash is a concrete continuous culvert carrying IRR US 89 over Billy Goat Wash in Coconino County, Arizona. It was built in 1958, so it is 67 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 3,342 vehicles a day, roughly 29% of them trucks, projected to reach 3,352 by 2040. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR US 89
CrossesBilly Goat Wash
Location20.1 MI N JCT US 160
RouteU.S. Route 89
CountyCoconino County
StateArizona
Coordinates36.3358, -111.494
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating75 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length43 ft (13.1 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 traffic3,342 (2020)
Projected traffic3,352 by 2040
Trucks29%
Lanes on structure3
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 Billy Goat Wash built?

It was built in 1958, making it 67 years old in 2025.

What condition is IRR US 89 over Billy Goat 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 Billy Goat Wash carry?

About 3,342 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is IRR US 89 over Billy Goat Wash?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m).

Who owns IRR US 89 over Billy Goat Wash?

It is owned by the State Highway Agency.