US Bridges

6th Ave NE over Red River of the North

Good

Grand Forks County, North Dakota · 1 South 8 East Thompson · Structure no. 000000018146300

Built
2010
15 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
1,113 ft
12 main spans
Daily traffic
1,589
2022 count
Owner
County
County Highway Agency

About this bridge

6th Ave NE over Red River of the North is a steel stringer/multi-beam or girder carrying 6th Ave NE over Red River of the North in Grand Forks County, North Dakota. It was built in 2010, so it is 15 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 1,589 vehicles a day, roughly 13% of them trucks, projected to reach 2,140 by 2042. The structure is 1,113 ft (339.1 m) long and 43 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Carries6th Ave NE
CrossesRed River of the North
Location1 South 8 East Thompson
RouteCounty Highway 1830
Coordinates47.7608, -96.93815
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans12
Design loadHL 93
Structure length1,113 ft (339.1 m)
Longest span130 ft (39.6 m)
Deck width43 ft (13.2 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,589 (2022)
Projected traffic2,140 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was 6th Ave NE over Red River of the North built?

It was built in 2010, making it 15 years old in 2025.

What condition is 6th Ave NE over Red River of the North 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 October 2023.

How much traffic does 6th Ave NE over Red River of the North carry?

About 1,589 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is 6th Ave NE over Red River of the North?

The structure is 1,113 ft (339.1 m) long with a longest span of 130 ft (39.6 m) and a deck 43 ft wide.

Who owns 6th Ave NE over Red River of the North?

It is owned by the County Highway Agency.