US Bridges

IRR BIA RTE 8 over Slaughterhouse Gulch

Fair

Yavapai County, Arizona · 0.6 KM E of Junc. HWY 89 · Structure no. 0000H68618B0240

Built
2010
15 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
68 ft
4 main spans
Daily traffic
4,250
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 8 over Slaughterhouse Gulch is a concrete culvert carrying IRR BIA RTE 8 over Slaughterhouse Gulch in Yavapai County, Arizona. It was built in 2010, so it is 15 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 4,250 vehicles a day, roughly 10% of them trucks, projected to reach 5,100 by 2044. The structure is 68 ft (20.8 m) long and 62 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesIRR BIA RTE 8
CrossesSlaughterhouse Gulch
Location0.6 KM E of Junc. HWY 89
RouteFederal Lands Road 8
CountyYavapai County
StateArizona
Coordinates34.56089, -112.44119
Functional classUrban Collector

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 protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 rating48.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length68 ft (20.8 m)
Longest span16 ft (5 m)
Deck width62 ft (18.9 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,250 (2024)
Projected traffic5,100 by 2044
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
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 BIA RTE 8 over Slaughterhouse Gulch built?

It was built in 2010, making it 15 years old in 2025.

What condition is IRR BIA RTE 8 over Slaughterhouse Gulch 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 December 2024.

How much traffic does IRR BIA RTE 8 over Slaughterhouse Gulch carry?

About 4,250 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is IRR BIA RTE 8 over Slaughterhouse Gulch?

The structure is 68 ft (20.8 m) long with a longest span of 16 ft (5 m) and a deck 62 ft wide.

Who owns IRR BIA RTE 8 over Slaughterhouse Gulch?

It is owned by the Bureau of Indian Affairs.