US Bridges

County Highway over Maple River

Good

Cass County, North Dakota · 2 North 1 West Enderlin · Structure no. 000000009104400

Built
1997
28 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
161 ft
3 main spans
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Maple River is a prestressed concrete continuous box beam or girders - single or spread carrying County Highway over Maple River in Cass County, North Dakota. It was built in 1997, so it is 28 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 20 vehicles a day, projected to reach 20 by 2039. The structure is 161 ft (49.1 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesMaple River
Location2 North 1 West Enderlin
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.6588, -97.63011
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.9 US tons
Inventory rating22.3 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length161 ft (49.1 m)
Longest span52 ft (15.8 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic20 by 2039
Trucks—
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 County Highway over Maple River built?

It was built in 1997, making it 28 years old in 2025.

What condition is County Highway over Maple 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 July 2023.

How much traffic does County Highway over Maple River carry?

About 20 vehicles per day (2019 count).

How long is County Highway over Maple River?

The structure is 161 ft (49.1 m) long with a longest span of 52 ft (15.8 m) and a deck 30 ft wide.

Who owns County Highway over Maple River?

It is owned by the County Highway Agency.