US Bridges

No Data Entered over Silver Creek

Fair

Mineral County, Montana · Silver CR · Structure no. 011607000000039

Built
1984
41 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

No Data Entered over Silver Creek is a prestressed concrete stringer/multi-beam or girder carrying No Data Entered over Silver Creek in Mineral County, Montana. It was built in 1984, so it is 41 years old, younger than the Montana average of 47 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 24 ft (7.4 m) long and 20 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesNo Data Entered
CrossesSilver Creek
LocationSilver CR
RouteFederal Lands Road 305
StateMontana
Coordinates47.39779, -115.52175
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating25.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 10
Structure length24 ft (7.4 m)
Longest span23 ft (6.9 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was No Data Entered over Silver Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is No Data Entered over Silver 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 No Data Entered over Silver Creek carry?

About 50 vehicles per day (latest count).

How long is No Data Entered over Silver Creek?

The structure is 24 ft (7.4 m) long with a longest span of 23 ft (6.9 m) and a deck 20 ft wide.

Who owns No Data Entered over Silver Creek?

It is owned by the U.S. Forest Service.