US Bridges

4402 Southside Rd. over Ruby Creek

Good

Lincoln County, Montana · Just Past JCT With 4477 · Structure no. 011404000000131

Built
1956
69 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
23 ft
1 main span
Daily traffic
99
1994 count
Owner
Federal
U.S. Forest Service

About this bridge

4402 Southside Rd. over Ruby Creek is a wood or timber stringer/multi-beam or girder carrying 4402 Southside Rd. over Ruby Creek in Lincoln County, Montana. It was built in 1956, so it is 69 years old, older than the Montana average of 47 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 99 vehicles a day, projected to reach 148 by 2045. The structure is 23 ft (7 m) long and 15 ft wide. If it were closed, the detour would be 59.7 mi (96 km).

Carries4402 Southside Rd.
CrossesRuby Creek
LocationJust Past JCT With 4477
RouteFederal Lands Road 4402
StateMontana
Coordinates48.51833, -115.95095
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.7 US tons
Inventory rating27.4 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width15 ft (4.6 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (1994)
Projected traffic148 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed59.7 mi (96 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$15,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 4402 Southside Rd. over Ruby Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is 4402 Southside Rd. over Ruby 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 August 2024.

How much traffic does 4402 Southside Rd. over Ruby Creek carry?

About 99 vehicles per day (1994 count).

How long is 4402 Southside Rd. over Ruby Creek?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 15 ft wide.

Who owns 4402 Southside Rd. over Ruby Creek?

It is owned by the U.S. Forest Service.