US Bridges

Nd Highway 10 over Legal Drain 14

Good

Cass County, North Dakota · 8 West of I-29 · Structure no. 0010013192

Built
1970
55 years old, rebuilt 2023
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
80 ft
2 main spans
Daily traffic
140
2019 count
Owner
County
County Highway Agency

About this bridge

Nd Highway 10 over Legal Drain 14 is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 10 over Legal Drain 14 in Cass County, North Dakota. It was built in 1970 and reconstructed in 2023, so it is 55 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 140 vehicles a day, roughly 14% of them trucks, projected to reach 200 by 2039. The structure is 80 ft (24.4 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNd Highway 10
CrossesLegal Drain 14
Location8 West of I-29
RouteState Highway 10
Coordinates46.877, -96.99681
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.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.4 US tons
Inventory rating31.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length80 ft (24.4 m)
Longest span37 ft (11.3 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2019)
Projected traffic200 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Nd Highway 10 over Legal Drain 14 built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2023.

What condition is Nd Highway 10 over Legal Drain 14 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 2023.

How much traffic does Nd Highway 10 over Legal Drain 14 carry?

About 140 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is Nd Highway 10 over Legal Drain 14?

The structure is 80 ft (24.4 m) long with a longest span of 37 ft (11.3 m) and a deck 32 ft wide.

Who owns Nd Highway 10 over Legal Drain 14?

It is owned by the County Highway Agency.