US Bridges

STC2816;BULLION ST over Big Wood River

Good

Blaine County, Idaho · 0.3 S. 0.4 W. Hailey · Structure no. 000000000019565

Built
1972
53 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
1 main span
Daily traffic
170
2023 count
Owner
County
County Highway Agency

About this bridge

STC2816;BULLION ST over Big Wood River is a prestressed concrete stringer/multi-beam or girder carrying STC2816;BULLION ST over Big Wood River in Blaine County, Idaho. It was built in 1972, so it is 53 years old, older than the Idaho average of 45.3 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 6% of them trucks, projected to reach 255 by 2042. The structure is 101 ft (30.8 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSTC2816;BULLION ST
CrossesBig Wood River
Location0.3 S. 0.4 W. Hailey
RouteCounty Highway 2816
StateIdaho
Coordinates43.51686, -114.32178
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating52 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span99 ft (30.2 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2023)
Projected traffic255 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$1 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2816;BULLION ST over Big Wood River built?

It was built in 1972, making it 53 years old in 2025.

What condition is STC2816;BULLION ST over Big Wood River 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 September 2024.

How much traffic does STC2816;BULLION ST over Big Wood River carry?

About 170 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is STC2816;BULLION ST over Big Wood River?

The structure is 101 ft (30.8 m) long with a longest span of 99 ft (30.2 m) and a deck 32 ft wide.

Who owns STC2816;BULLION ST over Big Wood River?

It is owned by the County Highway Agency.