US Bridges

County HWY 6 over Maple River

Good

Cass County, North Dakota · 2 West of Alice · Structure no. 000000009105331

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Box Beam or Girders - Single or Spread
Concrete
Length
134 ft
3 main spans
Daily traffic
160
2023 count
Owner
County
County Highway Agency

About this bridge

County HWY 6 over Maple River is a concrete box beam or girders - single or spread carrying County HWY 6 over Maple River in Cass County, North Dakota. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 160 vehicles a day, roughly 13% of them trucks, projected to reach 180 by 2043. The structure is 134 ft (40.8 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty HWY 6
CrossesMaple River
Location2 West of Alice
RouteCounty Highway 944
Coordinates46.76019, -97.6084
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.5 US tons
Inventory rating42.1 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length134 ft (40.8 m)
Longest span43 ft (13.1 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic160 (2023)
Projected traffic180 by 2043
Trucks13%
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 HWY 6 over Maple River built?

It was built in 2024, making it 1 years old in 2025.

What condition is County HWY 6 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 November 2024.

How much traffic does County HWY 6 over Maple River carry?

About 160 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is County HWY 6 over Maple River?

The structure is 134 ft (40.8 m) long with a longest span of 43 ft (13.1 m) and a deck 38 ft wide.

Who owns County HWY 6 over Maple River?

It is owned by the County Highway Agency.