US Bridges

Stc 4719;RED River over Siegel Creek

Good

Idaho County, Idaho · 3.8 S. 2.4 E. Elk City · Structure no. 000000000020210

Built
1964
61 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
26 ft
1 main span
Daily traffic
160
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 4719;RED River over Siegel Creek is a wood or timber stringer/multi-beam or girder carrying Stc 4719;RED River over Siegel Creek in Idaho County, Idaho. It was built in 1964, so it is 61 years old, older 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 160 vehicles a day, roughly 23% of them trucks, projected to reach 240 by 2042. The structure is 26 ft (7.9 m) long and 28 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesStc 4719;RED River
CrossesSiegel Creek
Location3.8 S. 2.4 E. Elk City
RouteCounty Highway 4719
StateIdaho
Coordinates45.77388, -115.38588
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating57 US tons
Inventory rating38 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2023)
Projected traffic240 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 4719;RED River over Siegel Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Stc 4719;RED River over Siegel Creek 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 June 2024.

How much traffic does Stc 4719;RED River over Siegel Creek carry?

About 160 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is Stc 4719;RED River over Siegel Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.

Who owns Stc 4719;RED River over Siegel Creek?

It is owned by the County Highway Agency.