US Bridges

IRR SR225 Mnt City over E Fork Owyhee Rvr

Fair

Elko County, Nevada · Near Mountain City · Structure no. B 535

Built
1949
76 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
115 ft
3 main spans
Daily traffic
400
2021 count
Owner
State
State Highway Agency

About this bridge

IRR SR225 Mnt City over E Fork Owyhee Rvr is a concrete continuous tee beam carrying IRR SR225 Mnt City over E Fork Owyhee Rvr in Elko County, Nevada. It was built in 1949, so it is 76 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 400 vehicles a day, roughly 8% of them trucks, projected to reach 580 by 2040. The structure is 115 ft (35.1 m) long and 31 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

CarriesIRR SR225 Mnt City
CrossesE Fork Owyhee Rvr
LocationNear Mountain City
RouteState Highway 225
StateNevada
Coordinates41.81965, -115.95375
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating36 US tons
Inventory rating20.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length115 ft (35.1 m)
Longest span70 ft (21.4 m)
Deck width31 ft (9.4 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2021)
Projected traffic580 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$527,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR225 Mnt City over E Fork Owyhee Rvr built?

It was built in 1949, making it 76 years old in 2025.

What condition is IRR SR225 Mnt City over E Fork Owyhee Rvr 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 2023.

How much traffic does IRR SR225 Mnt City over E Fork Owyhee Rvr carry?

About 400 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is IRR SR225 Mnt City over E Fork Owyhee Rvr?

The structure is 115 ft (35.1 m) long with a longest span of 70 ft (21.4 m) and a deck 31 ft wide.

Who owns IRR SR225 Mnt City over E Fork Owyhee Rvr?

It is owned by the State Highway Agency.