US Bridges

Scott Mtn Road over Deadwood River

Good

Valley County, Idaho · 0.25 E Deadwood Dam · Structure no. 000000000033832

Built
1982
43 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Scott Mtn Road over Deadwood River is a prestressed concrete stringer/multi-beam or girder carrying Scott Mtn Road over Deadwood River in Valley County, Idaho. It was built in 1982, so it is 43 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 30 vehicles a day, roughly 50% of them trucks, projected to reach 45 by 2042. The structure is 64 ft (19.5 m) long and 18 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesScott Mtn Road
CrossesDeadwood River
Location0.25 E Deadwood Dam
RouteCounty Highway 0
StateIdaho
Coordinates44.29194, -115.64197
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52 US tons
Inventory rating31 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length64 ft (19.5 m)
Longest span62 ft (18.9 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2023)
Projected traffic45 by 2042
Trucks50%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 Scott Mtn Road over Deadwood River built?

It was built in 1982, making it 43 years old in 2025.

What condition is Scott Mtn Road over Deadwood 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 August 2024.

How much traffic does Scott Mtn Road over Deadwood River carry?

About 30 vehicles per day (2023 count), of which roughly 50% are trucks.

How long is Scott Mtn Road over Deadwood River?

The structure is 64 ft (19.5 m) long with a longest span of 62 ft (18.9 m) and a deck 18 ft wide.

Who owns Scott Mtn Road over Deadwood River?

It is owned by the County Highway Agency.