US Bridges

IRR BIA RTE 8 over Wash

Good

Graham County, Arizona · 32 KM East of San Carlos · Structure no. 0000H58616B0831

Built
1970
55 years old
Condition
Good
inspected January 2024
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
170
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 8 over Wash is a concrete continuous culvert carrying IRR BIA RTE 8 over Wash in Graham County, Arizona. It was built in 1970, so it is 55 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 170 vehicles a day, roughly 5% of them trucks, projected to reach 205 by 2044. The structure is 37 ft (11.2 m) long and 28 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

CarriesIRR BIA RTE 8
CrossesWash
Location32 KM East of San Carlos
RouteFederal Lands Road 8
StateArizona
Coordinates33.35889, -110.08108
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span11 ft (3.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2024)
Projected traffic205 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 Wash built?

It was built in 1970, making it 55 years old in 2025.

What condition is IRR BIA RTE 8 over Wash in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does IRR BIA RTE 8 over Wash carry?

About 170 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 8 over Wash?

The structure is 37 ft (11.2 m) long with a longest span of 11 ft (3.5 m) and a deck 28 ft wide.

Who owns IRR BIA RTE 8 over Wash?

It is owned by the Bureau of Indian Affairs.