US Bridges

IRR BIA 2 over Sheep Creek

Fair

Elko County, Nevada · 11 KM SW of Owyhee · Structure no. 0000H64641B0323

Built
1980
45 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
20
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA 2 over Sheep Creek is a concrete culvert carrying IRR BIA 2 over Sheep Creek in Elko County, Nevada. It was built in 1980, so it is 45 years old, older than the Nevada average of 36.4 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 22 ft (6.6 m) long and 46 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesIRR BIA 2
CrossesSheep Creek
Location11 KM SW of Owyhee
RouteFederal Lands Road 2
StateNevada
Coordinates41.89225, -116.20889
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
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 spans2
Design loadHS 20
Structure length22 ft (6.6 m)
Longest span10 ft (3.2 m)
Deck width46 ft (14 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 2 over Sheep Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is IRR BIA 2 over Sheep Creek 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 October 2024.

How much traffic does IRR BIA 2 over Sheep Creek carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is IRR BIA 2 over Sheep Creek?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3.2 m) and a deck 46 ft wide.

Who owns IRR BIA 2 over Sheep Creek?

It is owned by the Bureau of Indian Affairs.