US Bridges

County Highway over Maple River

Good

Cass County, North Dakota · 1 East 3 South Tower City · Structure no. 000000009103250

Built
2014
11 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete
Length
53 ft
3 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

County Highway over Maple River is a concrete culvert carrying County Highway over Maple River in Cass County, North Dakota. It was built in 2014, so it is 11 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 20 vehicles a day, projected to reach 20 by 2040. The structure is 53 ft (16.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Highway
CrossesMaple River
Location1 East 3 South Tower City
RouteCounty Highway 0
Coordinates46.87629, -97.65159
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.7 US tons
Inventory rating46 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 25 or greater
Structure length53 ft (16.2 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic20 by 2040
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Maple River built?

It was built in 2014, making it 11 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 August 2021.

How much traffic does County Highway over Maple River carry?

About 20 vehicles per day (2020 count).

How long is County Highway over Maple River?

The structure is 53 ft (16.2 m) long with a longest span of 16 ft (4.9 m).

Who owns County Highway over Maple River?

It is owned by the County Highway Agency.