US Bridges

S5765;SILVR Valley over S.Fk.Coeur Dalene River

Fair

Shoshone County, Idaho · 0.9 N. 1.6 W. Osburn · Structure no. 000000000030825

Built
1949
76 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
191 ft
3 main spans
Daily traffic
1,400
2023 count
Owner
County
County Highway Agency

About this bridge

S5765;SILVR Valley over S.Fk.Coeur Dalene River is a steel continuous stringer/multi-beam or girder carrying S5765;SILVR Valley over S.Fk.Coeur Dalene River in Shoshone County, Idaho. It was built in 1949, so it is 76 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 1,400 vehicles a day, roughly 3% of them trucks, projected to reach 2,100 by 2042. The structure is 191 ft (58.2 m) long and 38 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesS5765;SILVR Valley
CrossesS.Fk.Coeur Dalene River
Location0.9 N. 1.6 W. Osburn
RouteCounty Highway 5765
CountyShoshone County
StateIdaho
Coordinates47.51678, -116.03308
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
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length191 ft (58.2 m)
Longest span72 ft (21.9 m)
Deck width38 ft (11.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic2,100 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S5765;SILVR Valley over S.Fk.Coeur Dalene River built?

It was built in 1949, making it 76 years old in 2025.

What condition is S5765;SILVR Valley over S.Fk.Coeur Dalene River 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 June 2023.

How much traffic does S5765;SILVR Valley over S.Fk.Coeur Dalene River carry?

About 1,400 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S5765;SILVR Valley over S.Fk.Coeur Dalene River?

The structure is 191 ft (58.2 m) long with a longest span of 72 ft (21.9 m) and a deck 38 ft wide.

Who owns S5765;SILVR Valley over S.Fk.Coeur Dalene River?

It is owned by the County Highway Agency.