US Bridges

Southside RD over Dry Creek 002

GoodPosted for load

Mineral County, Montana · 5M W Superior · Structure no. L31169000+07001

Built
1962
63 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
45 ft
1 main span
Daily traffic
299
2023 count
Owner
County
County Highway Agency

About this bridge

Southside RD over Dry Creek 002 is a wood or timber stringer/multi-beam or girder carrying Southside RD over Dry Creek 002 in Mineral County, Montana. It was built in 1962, so it is 63 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 299 vehicles a day, roughly 3% of them trucks, projected to reach 320 by 2043. The structure is 45 ft (13.7 m) long and 24 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

CarriesSouthside RD
CrossesDry Creek 002
Location5M W Superior
RouteCounty Highway 31169
StateMontana
Coordinates47.22126, -114.97312
Functional classRural Minor 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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating29 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width24 ft (7.2 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic299 (2023)
Projected traffic320 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Southside RD over Dry Creek 002 built?

It was built in 1962, making it 63 years old in 2025.

What condition is Southside RD over Dry Creek 002 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 November 2023.

How much traffic does Southside RD over Dry Creek 002 carry?

About 299 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Southside RD over Dry Creek 002?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 24 ft wide.

Who owns Southside RD over Dry Creek 002?

It is owned by the County Highway Agency.