US Bridges

95th St. SW over Little Missouri River

Good

Bowman County, North Dakota · 19 South 1 West Marmarth · Structure no. 000000006105160

Built
2008
17 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
90
2017 count
Owner
County
County Highway Agency

About this bridge

95th St. SW over Little Missouri River is a concrete culvert carrying 95th St. SW over Little Missouri River in Bowman County, North Dakota. It was built in 2008, so it is 17 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 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 90 vehicles a day, roughly 5% of them trucks, projected to reach 90 by 2037. The structure is 44 ft (13.3 m) long and 30 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Carries95th St. SW
CrossesLittle Missouri River
Location19 South 1 West Marmarth
RouteCounty Highway 605
Coordinates46.04773, -103.95376
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating99.3 US tons
Inventory rating59.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 25 or greater
Structure length44 ft (13.3 m)
Longest span10 ft (3 m)
Deck width30 ft (9.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2017)
Projected traffic90 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 95th St. SW over Little Missouri River built?

It was built in 2008, making it 17 years old in 2025.

What condition is 95th St. SW over Little Missouri River 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 October 2021.

How much traffic does 95th St. SW over Little Missouri River carry?

About 90 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is 95th St. SW over Little Missouri River?

The structure is 44 ft (13.3 m) long with a longest span of 10 ft (3 m) and a deck 30 ft wide.

Who owns 95th St. SW over Little Missouri River?

It is owned by the County Highway Agency.