US Bridges

Interstate 29 over Drainage Ditch

Fair

Cass County, North Dakota · 1 South Argusville Inter · Structure no. 0029077324

Built
1968
57 years old, rebuilt 2010
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
44 ft
5 main spans
Daily traffic
9,700
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 29 over Drainage Ditch is a concrete culvert carrying Interstate 29 over Drainage Ditch in Cass County, North Dakota. It was built in 1968 and reconstructed in 2010, so it is 57 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.

It carries about 9,700 vehicles a day, roughly 18% of them trucks, projected to reach 9,700 by 2039. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesInterstate 29
CrossesDrainage Ditch
Location1 South Argusville Inter
RouteInterstate 29
CountyCass County
StateNorth Dakota
Coordinates47.03685, -96.92327
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating85.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,700 (2019)
Projected traffic9,700 by 2039
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Interstate 29 over Drainage Ditch built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2010.

What condition is Interstate 29 over Drainage Ditch 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 July 2023.

How much traffic does Interstate 29 over Drainage Ditch carry?

About 9,700 vehicles per day (2019 count), of which roughly 18% are trucks.

How long is Interstate 29 over Drainage Ditch?

The structure is 44 ft (13.4 m) long with a longest span of 8 ft (2.4 m).

Who owns Interstate 29 over Drainage Ditch?

It is owned by the State Highway Agency.