US Bridges

STC5711;ST Joe Rvr over Marble Creek

Fair

Shoshone County, Idaho · 10.8 E. Calder · Structure no. 000000000020365

Built
1974
51 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
196 ft
2 main spans
Daily traffic
330
2023 count
Owner
County
County Highway Agency

About this bridge

STC5711;ST Joe Rvr over Marble Creek is a concrete box beam or girders - single or spread carrying STC5711;ST Joe Rvr over Marble Creek in Shoshone County, Idaho. It was built in 1974, so it is 51 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 5 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 330 vehicles a day, roughly 32% of them trucks, projected to reach 495 by 2042. The structure is 196 ft (59.7 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSTC5711;ST Joe Rvr
CrossesMarble Creek
Location10.8 E. Calder
RouteCounty Highway 5711
CountyShoshone County
StateIdaho
Coordinates47.25027, -116.02238
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85 US tons
Inventory rating61 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length196 ft (59.7 m)
Longest span98 ft (29.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2023)
Projected traffic495 by 2042
Trucks32%
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$1.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC5711;ST Joe Rvr over Marble Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is STC5711;ST Joe Rvr over Marble 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 August 2024.

How much traffic does STC5711;ST Joe Rvr over Marble Creek carry?

About 330 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is STC5711;ST Joe Rvr over Marble Creek?

The structure is 196 ft (59.7 m) long with a longest span of 98 ft (29.9 m) and a deck 35 ft wide.

Who owns STC5711;ST Joe Rvr over Marble Creek?

It is owned by the County Highway Agency.