US Bridges

County Road over Box Elder Creek

Good

Bowman County, North Dakota · 25 South 2 West Marmarth · Structure no. 000000006104230

Built
2013
12 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
3 main spans
Daily traffic
25
2016 count
Owner
County
County Highway Agency

About this bridge

County Road over Box Elder Creek is a prestressed concrete stringer/multi-beam or girder carrying County Road over Box Elder Creek in Bowman County, North Dakota. It was built in 2013, so it is 12 years old, younger than the North Dakota average of 48.2 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 25 vehicles a day, roughly 3% of them trucks, projected to reach 25 by 2032. The structure is 300 ft (91.4 m) long and 32 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesCounty Road
CrossesBox Elder Creek
Location25 South 2 West Marmarth
RouteCounty Highway 605
Coordinates45.94512, -103.98192
Functional classRural Major 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length300 ft (91.4 m)
Longest span120 ft (36.6 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2016)
Projected traffic25 by 2032
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 County Road over Box Elder Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is County Road over Box Elder 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 April 2024.

How much traffic does County Road over Box Elder Creek carry?

About 25 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is County Road over Box Elder Creek?

The structure is 300 ft (91.4 m) long with a longest span of 120 ft (36.6 m) and a deck 32 ft wide.

Who owns County Road over Box Elder Creek?

It is owned by the County Highway Agency.