US Bridges

Interstate 29 over County Drain 28

Good

Richland County, North Dakota · 8 North of Nd 13 · Structure no. 0029030029

Built
1973
52 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
5,100
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 29 over County Drain 28 is a concrete culvert carrying Interstate 29 over County Drain 28 in Richland County, North Dakota. It was built in 1973, so it is 52 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,100 vehicles a day, roughly 22% of them trucks, projected to reach 5,100 by 2039. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 11.8 mi (19 km).

CarriesInterstate 29
CrossesCounty Drain 28
Location8 North of Nd 13
RouteInterstate 29
Coordinates46.36936, -96.83072
Functional classRural Principal Arterial - Interstate

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating98.8 US tons
Inventory rating59.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,100 (2019)
Projected traffic5,100 by 2039
Trucks22%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 County Drain 28 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Interstate 29 over County Drain 28 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 September 2024.

How much traffic does Interstate 29 over County Drain 28 carry?

About 5,100 vehicles per day (2019 count), of which roughly 22% are trucks.

How long is Interstate 29 over County Drain 28?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m).

Who owns Interstate 29 over County Drain 28?

It is owned by the State Highway Agency.