US Bridges

64th Ave South over I-29/64th Ave S Sep

Good

Cass County, North Dakota · 4 South of I-94 · Structure no. 0029059264

Built
2022
3 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
400 ft
2 main spans
Daily traffic
410
2020 count
Owner
State
State Highway Agency

About this bridge

64th Ave South over I-29/64th Ave S Sep is a steel continuous stringer/multi-beam or girder carrying 64th Ave South over I-29/64th Ave S Sep in Cass County, North Dakota. It was built in 2022, so it is 3 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 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 410 vehicles a day, roughly 5% of them trucks, projected to reach 17,000 by 2043. The structure is 400 ft (121.9 m) long and 52 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries64th Ave South
CrossesI-29/64th Ave S Sep
Location4 South of I-94
RouteCity Street 0
CountyCass County
StateNorth Dakota
Coordinates46.78946, -96.839
Functional classUrban Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.9 US tons
Inventory rating38.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length400 ft (121.9 m)
Longest span196 ft (59.8 m)
Deck width52 ft (15.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2020)
Projected traffic17,000 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
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 64th Ave South over I-29/64th Ave S Sep built?

It was built in 2022, making it 3 years old in 2025.

What condition is 64th Ave South over I-29/64th Ave S Sep 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 April 2023.

How much traffic does 64th Ave South over I-29/64th Ave S Sep carry?

About 410 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 64th Ave South over I-29/64th Ave S Sep?

The structure is 400 ft (121.9 m) long with a longest span of 196 ft (59.8 m) and a deck 52 ft wide.

Who owns 64th Ave South over I-29/64th Ave S Sep?

It is owned by the State Highway Agency.