US Bridges

Ruby Creek Road over Ruby Creek (#3)

Good

Boundary County, Idaho · 3.3 N. 0.7 W. Naples · Structure no. 000000000030341

Built
2020
5 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
30
2023 count
Owner
County
County Highway Agency

About this bridge

Ruby Creek Road over Ruby Creek (#3) is a steel stringer/multi-beam or girder carrying Ruby Creek Road over Ruby Creek (#3) in Boundary County, Idaho. It was built in 2020, so it is 5 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 8 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 30 ft (9.1 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRuby Creek Road
CrossesRuby Creek (#3)
Location3.3 N. 0.7 W. Naples
RouteCounty Highway 0
CountyBoundary County
StateIdaho
Coordinates48.61831, -116.41225
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating47.5 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span29 ft (8.9 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deck100 ft (30.5 m)

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 closed98.8 mi (159 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 Ruby Creek Road over Ruby Creek (#3) built?

It was built in 2020, making it 5 years old in 2025.

What condition is Ruby Creek Road over Ruby Creek (#3) 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 Ruby Creek Road over Ruby Creek (#3) carry?

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

How long is Ruby Creek Road over Ruby Creek (#3)?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.9 m) and a deck 17 ft wide.

Who owns Ruby Creek Road over Ruby Creek (#3)?

It is owned by the County Highway Agency.