US Bridges

County Highway over County Drain 14

Fair

Cass County, North Dakota · 1 East 2 South Mapleton · Structure no. 000000009133260

Built
1991
34 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
1 main span
Daily traffic
20
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over County Drain 14 is a wood or timber stringer/multi-beam or girder carrying County Highway over County Drain 14 in Cass County, North Dakota. It was built in 1991, so it is 34 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 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.

It carries about 20 vehicles a day, projected to reach 20 by 2039. The structure is 52 ft (15.8 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesCounty Drain 14
Location1 East 2 South Mapleton
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.86237, -97.02329
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating31.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width35 ft (10.6 m)
Roadway width33 ft (10 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 County Drain 14 built?

It was built in 1991, making it 34 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 20 vehicles per day (2019 count).

How long is County Highway over County Drain 14?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 35 ft wide.

Who owns County Highway over County Drain 14?

It is owned by the County Highway Agency.