US Bridges

Ross Gulch over W.Fk.Pine Creek

Fair

Shoshone County, Idaho · 4.0 S. 0.9 W. Pinehurst · Structure no. 000000000030720

Built
1975
50 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

Ross Gulch over W.Fk.Pine Creek is a prestressed concrete tee beam carrying Ross Gulch over W.Fk.Pine Creek in Shoshone County, Idaho. It was built in 1975, so it is 50 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.

It carries about 150 vehicles a day, roughly 10% of them trucks, projected to reach 225 by 2039. The structure is 100 ft (30.5 m) long and 21 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRoss Gulch
CrossesW.Fk.Pine Creek
Location4.0 S. 0.9 W. Pinehurst
RouteCounty Highway 0
CountyShoshone County
StateIdaho
Coordinates47.4815, -116.25161
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span98 ft (29.9 m)
Deck width21 ft (6.3 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic225 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$900,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ross Gulch over W.Fk.Pine Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Ross Gulch over W.Fk.Pine 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 July 2023.

How much traffic does Ross Gulch over W.Fk.Pine Creek carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Ross Gulch over W.Fk.Pine Creek?

The structure is 100 ft (30.5 m) long with a longest span of 98 ft (29.9 m) and a deck 21 ft wide.

Who owns Ross Gulch over W.Fk.Pine Creek?

It is owned by the County Highway Agency.