US Bridges

Stc 3826;ALDER Crk over S.Fk.Payette River

Good

Boise County, Idaho · 1.2 S.E. Garden Valley · Structure no. 000000000026651

Built
2014
11 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
185 ft
1 main span
Daily traffic
460
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 3826;ALDER Crk over S.Fk.Payette River is a steel stringer/multi-beam or girder carrying Stc 3826;ALDER Crk over S.Fk.Payette River in Boise 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 460 vehicles a day, roughly 7% of them trucks, projected to reach 690 by 2042. The structure is 185 ft (56.4 m) long and 35 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesStc 3826;ALDER Crk
CrossesS.Fk.Payette River
Location1.2 S.E. Garden Valley
RouteCounty Highway 3826
CountyBoise County
StateIdaho
Coordinates44.07064, -115.94569
Functional classRural Major 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 protection9 ExcellentNo problems noted.
Last inspectionAugust 2022
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length185 ft (56.4 m)
Longest span177 ft (54 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic460 (2023)
Projected traffic690 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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 Stc 3826;ALDER Crk over S.Fk.Payette River built?

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

What condition is Stc 3826;ALDER Crk over S.Fk.Payette 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 2022.

How much traffic does Stc 3826;ALDER Crk over S.Fk.Payette River carry?

About 460 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Stc 3826;ALDER Crk over S.Fk.Payette River?

The structure is 185 ft (56.4 m) long with a longest span of 177 ft (54 m) and a deck 35 ft wide.

Who owns Stc 3826;ALDER Crk over S.Fk.Payette River?

It is owned by the County Highway Agency.