US Bridges

SH 33 over Spring Creek

Poor

Teton County, Idaho · 1.3 E. Tetonia · Structure no. 000000000013955

Built
1975
50 years old
Condition
Poor
inspected July 2024
Type
Channel Beam
Concrete
Length
43 ft
1 main span
Daily traffic
5,600
2023 count
Owner
State
State Highway Agency

About this bridge

SH 33 over Spring Creek is a concrete channel beam carrying SH 33 over Spring Creek in Teton 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5,600 vehicles a day, roughly 6% of them trucks, projected to reach 8,400 by 2042. The structure is 43 ft (13.1 m) long and 38 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSH 33
CrossesSpring Creek
Location1.3 E. Tetonia
RouteState Highway 33
CountyTeton County
StateIdaho
Coordinates43.8065, -111.13606
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span41 ft (12.5 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2023)
Projected traffic8,400 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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$676,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 33 over Spring Creek built?

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

What condition is SH 33 over Spring Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does SH 33 over Spring Creek carry?

About 5,600 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SH 33 over Spring Creek?

The structure is 43 ft (13.1 m) long with a longest span of 41 ft (12.5 m) and a deck 38 ft wide.

Who owns SH 33 over Spring Creek?

It is owned by the State Highway Agency.