US Bridges

Old HWY Road over S.Fk.Coeur Dalene River

Good

Shoshone County, Idaho · 0.3 N. 1.6 E. Mullan · Structure no. 000000000030746

Built
2014
11 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
1,000
2023 count
Owner
County
County Highway Agency

About this bridge

Old HWY Road over S.Fk.Coeur Dalene River is a prestressed concrete stringer/multi-beam or girder carrying Old HWY Road over S.Fk.Coeur Dalene River in Shoshone County, Idaho. It was built in 2014, so it is 11 years old, younger 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 1,000 vehicles a day, roughly 25% of them trucks, projected to reach 1,500 by 2042. The structure is 85 ft (25.9 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOld HWY Road
CrossesS.Fk.Coeur Dalene River
Location0.3 N. 1.6 E. Mullan
RouteCounty Highway 0
StateIdaho
Coordinates47.47106, -115.77403
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating44.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length85 ft (25.9 m)
Longest span82 ft (25 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2042
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Old HWY Road over S.Fk.Coeur Dalene River built?

It was built in 2014, making it 11 years old in 2025.

What condition is Old HWY Road over S.Fk.Coeur Dalene 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 July 2024.

How much traffic does Old HWY Road over S.Fk.Coeur Dalene River carry?

About 1,000 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is Old HWY Road over S.Fk.Coeur Dalene River?

The structure is 85 ft (25.9 m) long with a longest span of 82 ft (25 m) and a deck 38 ft wide.

Who owns Old HWY Road over S.Fk.Coeur Dalene River?

It is owned by the County Highway Agency.