US Bridges

Nd Highway 19 over Six Mile Bay

Good

Ramsey County, North Dakota · 7 West of US 2 · Structure no. 0019148200

Built
2001
24 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
235 ft
3 main spans
Daily traffic
1,320
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 19 over Six Mile Bay is a prestressed concrete continuous stringer/multi-beam or girder carrying Nd Highway 19 over Six Mile Bay in Ramsey County, North Dakota. It was built in 2001, so it is 24 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 1,320 vehicles a day, roughly 8% of them trucks, projected to reach 1,320 by 2039. The structure is 235 ft (71.6 m) long and 43 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesNd Highway 19
CrossesSix Mile Bay
Location7 West of US 2
RouteState Highway 19
Coordinates48.12144, -99.00888
Functional classRural Minor Arterial

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 above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating63.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length235 ft (71.6 m)
Longest span76 ft (23.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,320 (2019)
Projected traffic1,320 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nd Highway 19 over Six Mile Bay built?

It was built in 2001, making it 24 years old in 2025.

What condition is Nd Highway 19 over Six Mile Bay 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 Nd Highway 19 over Six Mile Bay carry?

About 1,320 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is Nd Highway 19 over Six Mile Bay?

The structure is 235 ft (71.6 m) long with a longest span of 76 ft (23.2 m) and a deck 43 ft wide.

Who owns Nd Highway 19 over Six Mile Bay?

It is owned by the State Highway Agency.