US Bridges

S 252-WELDON RD over Drainage

Fair

McCone County, Montana · 14M NW Circle · Structure no. S00252014+01001

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
39 ft
2 main spans
Daily traffic
57
2023 count
Owner
County
County Highway Agency

About this bridge

S 252-WELDON RD over Drainage is a wood or timber stringer/multi-beam or girder carrying S 252-WELDON RD over Drainage in McCone County, Montana. It was built in 1955, so it is 70 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 57 vehicles a day, roughly 16% of them trucks, projected to reach 60 by 2043. The structure is 39 ft (12 m) long and 26 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

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CarriesS 252-WELDON RD
CrossesDrainage
Location14M NW Circle
RouteCounty Highway 252
CountyMcCone County
StateMontana
Coordinates47.50636, -105.81024
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating33 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length39 ft (12 m)
Longest span19 ft (5.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2023)
Projected traffic60 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 S 252-WELDON RD over Drainage built?

It was built in 1955, making it 70 years old in 2025.

What condition is S 252-WELDON RD over Drainage in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does S 252-WELDON RD over Drainage carry?

About 57 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is S 252-WELDON RD over Drainage?

The structure is 39 ft (12 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns S 252-WELDON RD over Drainage?

It is owned by the County Highway Agency.