US Bridges

County Highway over County Drain 14

FairPosted for load

Cass County, North Dakota · 4 East 1 North Mapleton · Structure no. 000000009136231

Built
1952
73 years old
Condition
Fair
inspected June 2023
Type
Channel Beam
Concrete
Length
73 ft
2 main spans
Daily traffic
10
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over County Drain 14 is a concrete channel beam carrying County Highway over County Drain 14 in Cass County, North Dakota. It was built in 1952, so it is 73 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, projected to reach 20 by 2039. The structure is 73 ft (22.3 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesCounty Drain 14
Location4 East 1 North Mapleton
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.90573, -96.96576
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating27.7 US tons
Inventory rating16.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span35 ft (10.7 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (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 County Drain 14 built?

It was built in 1952, making it 73 years old in 2025.

What condition is County Highway over County Drain 14 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does County Highway over County Drain 14 carry?

About 10 vehicles per day (2019 count).

How long is County Highway over County Drain 14?

The structure is 73 ft (22.3 m) long with a longest span of 35 ft (10.7 m) and a deck 26 ft wide.

Who owns County Highway over County Drain 14?

It is owned by the County Highway Agency.