US Bridges

Nd Highway over Louse Creek

Good

Morton County, North Dakota · 1 West of Flasher · Structure no. 0021106109

Built
1954
71 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
120 ft
2 main spans
Daily traffic
900
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway over Louse Creek is a steel continuous stringer/multi-beam or girder carrying Nd Highway over Louse Creek in Morton County, North Dakota. It was built in 1954, so it is 71 years old, older 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 900 vehicles a day, roughly 11% of them trucks, projected to reach 815 by 2039. The structure is 120 ft (36.6 m) long and 33 ft wide. If it were closed, the detour would be 57.8 mi (93 km).

CarriesNd Highway
CrossesLouse Creek
Location1 West of Flasher
RouteState Highway 21
Coordinates46.45502, -101.25225
Functional classRural Principal Arterial - Other

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.8 US tons
Inventory rating35.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length120 ft (36.6 m)
Longest span56 ft (17.1 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic900 (2019)
Projected traffic815 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed57.8 mi (93 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Nd Highway over Louse Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Nd Highway over Louse 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 May 2023.

How much traffic does Nd Highway over Louse Creek carry?

About 900 vehicles per day (2019 count), of which roughly 11% are trucks.

How long is Nd Highway over Louse Creek?

The structure is 120 ft (36.6 m) long with a longest span of 56 ft (17.1 m) and a deck 33 ft wide.

Who owns Nd Highway over Louse Creek?

It is owned by the State Highway Agency.