US Bridges

Welter Divide RD over Box Elder Creek 010

Good

Petroleum County, Montana · 13M NE Teigen · Structure no. L35112003+00001

Built
1994
31 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Welter Divide RD over Box Elder Creek 010 is a prestressed concrete tee beam carrying Welter Divide RD over Box Elder Creek 010 in Petroleum County, Montana. It was built in 1994, so it is 31 years old, younger 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.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 80 ft (24.4 m) long and 24 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesWelter Divide RD
CrossesBox Elder Creek 010
Location13M NE Teigen
RouteCounty Highway 35002
StateMontana
Coordinates47.22419, -108.54256
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length80 ft (24.4 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Welter Divide RD over Box Elder Creek 010 built?

It was built in 1994, making it 31 years old in 2025.

What condition is Welter Divide RD over Box Elder Creek 010 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 Welter Divide RD over Box Elder Creek 010 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Welter Divide RD over Box Elder Creek 010?

The structure is 80 ft (24.4 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns Welter Divide RD over Box Elder Creek 010?

It is owned by the County Highway Agency.