US Bridges

51st Ave NE over Sheyenne River

Good

Benson County, North Dakota · 2 East 6 South Maddock · Structure no. 000000003116340

Built
1975
50 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
20
2018 count
Owner
County
County Highway Agency

About this bridge

51st Ave NE over Sheyenne River is a prestressed concrete box beam or girders - single or spread carrying 51st Ave NE over Sheyenne River in Benson County, North Dakota. It was built in 1975, so it is 50 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 20 vehicles a day, projected to reach 20 by 2038. The structure is 75 ft (22.9 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries51st Ave NE
CrossesSheyenne River
Location2 East 6 South Maddock
RouteCounty Highway 0
CountyBenson County
StateNorth Dakota
Coordinates47.87651, -99.49059
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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating74.7 US tons
Inventory rating43 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length75 ft (22.9 m)
Longest span72 ft (21.9 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2018)
Projected traffic20 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 51st Ave NE over Sheyenne River built?

It was built in 1975, making it 50 years old in 2025.

What condition is 51st Ave NE over Sheyenne 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 April 2024.

How much traffic does 51st Ave NE over Sheyenne River carry?

About 20 vehicles per day (2018 count).

How long is 51st Ave NE over Sheyenne River?

The structure is 75 ft (22.9 m) long with a longest span of 72 ft (21.9 m) and a deck 30 ft wide.

Who owns 51st Ave NE over Sheyenne River?

It is owned by the County Highway Agency.