US Bridges

Stateline RD;WY114 over Tincup Creek

FairPosted for load

Caribou County, Idaho · 3.5 Miles N. of Etna · Structure no. 000000000031222

Built
1970
55 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
29 ft
1 main span
Daily traffic
404
2023 count
Owner
County
County Highway Agency

About this bridge

Stateline RD;WY114 over Tincup Creek is a concrete stringer/multi-beam or girder carrying Stateline RD;WY114 over Tincup Creek in Caribou County, Idaho. It was built in 1970, so it is 55 years old, older than the Idaho average of 45.3 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. Its operating status is: posted for load restriction.

It carries about 404 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2042. The structure is 29 ft (8.7 m) long and 28 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesStateline RD;WY114
CrossesTincup Creek
Location3.5 Miles N. of Etna
RouteCounty Highway 0
CountyCaribou County
StateIdaho
Coordinates43.01028, -111.04417
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
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 rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span27 ft (8.1 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic404 (2023)
Projected traffic600 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stateline RD;WY114 over Tincup Creek built?

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

What condition is Stateline RD;WY114 over Tincup 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 February 2024.

How much traffic does Stateline RD;WY114 over Tincup Creek carry?

About 404 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Stateline RD;WY114 over Tincup Creek?

The structure is 29 ft (8.7 m) long with a longest span of 27 ft (8.1 m) and a deck 28 ft wide.

Who owns Stateline RD;WY114 over Tincup Creek?

It is owned by the County Highway Agency.