US Bridges

Cass County No 22 over I-29/HARWOOD Int

Good

Cass County, North Dakota · 7 North of US 10 · Structure no. 0029072778

Built
1970
55 years old, rebuilt 2013
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
300 ft
4 main spans
Daily traffic
2,150
2019 count
Owner
State
State Highway Agency

About this bridge

Cass County No 22 over I-29/HARWOOD Int is a steel continuous stringer/multi-beam or girder carrying Cass County No 22 over I-29/HARWOOD Int in Cass County, North Dakota. It was built in 1970 and reconstructed in 2013, so it is 55 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 2,150 vehicles a day, roughly 5% of them trucks, projected to reach 2,400 by 2039. The structure is 300 ft (91.4 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesCass County No 22
CrossesI-29/HARWOOD Int
Location7 North of US 10
RouteCounty Highway 949
CountyCass County
StateNorth Dakota
Coordinates46.97717, -96.88447
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
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating72.5 US tons
Inventory rating43.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span110 ft (33.5 m)
Deck width51 ft (15.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,150 (2019)
Projected traffic2,400 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cass County No 22 over I-29/HARWOOD Int built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2013.

What condition is Cass County No 22 over I-29/HARWOOD Int 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 July 2023.

How much traffic does Cass County No 22 over I-29/HARWOOD Int carry?

About 2,150 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Cass County No 22 over I-29/HARWOOD Int?

The structure is 300 ft (91.4 m) long with a longest span of 110 ft (33.5 m) and a deck 51 ft wide.

Who owns Cass County No 22 over I-29/HARWOOD Int?

It is owned by the State Highway Agency.