US Bridges

County Highway over I-94/AYR Interchange

Fair

Cass County, North Dakota · 3 East of Nd 38 · Structure no. 0094317846

Built
1960
65 years old, rebuilt 1998
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
220 ft
4 main spans
Daily traffic
75
2019 count
Owner
State
State Highway Agency

About this bridge

County Highway over I-94/AYR Interchange is a prestressed concrete continuous stringer/multi-beam or girder carrying County Highway over I-94/AYR Interchange in Cass County, North Dakota. It was built in 1960 and reconstructed in 1998, so it is 65 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 5 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 75 vehicles a day, projected to reach 75 by 2039. The structure is 220 ft (67.1 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesCounty Highway
CrossesI-94/AYR Interchange
Location3 East of Nd 38
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.87567, -97.49291
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.2 US tons
Inventory rating49.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span65 ft (19.8 m)
Deck width30 ft (9.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2019)
Projected traffic75 by 2039
Trucks0%
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 County Highway over I-94/AYR Interchange built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1998.

What condition is County Highway over I-94/AYR Interchange 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 October 2024.

How much traffic does County Highway over I-94/AYR Interchange carry?

About 75 vehicles per day (2019 count).

How long is County Highway over I-94/AYR Interchange?

The structure is 220 ft (67.1 m) long with a longest span of 65 ft (19.8 m) and a deck 30 ft wide.

Who owns County Highway over I-94/AYR Interchange?

It is owned by the State Highway Agency.