US Bridges

Nd Highway 1 over Bn Railroad Separation

Good

Griggs County, North Dakota · South of Hanneford · Structure no. 0001104455

Built
2009
16 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
204 ft
3 main spans
Daily traffic
750
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 1 over Bn Railroad Separation is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 1 over Bn Railroad Separation in Griggs County, North Dakota. It was built in 2009, so it is 16 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 750 vehicles a day, roughly 17% of them trucks, projected to reach 750 by 2039. The structure is 204 ft (62.2 m) long and 43 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNd Highway 1
CrossesBn Railroad Separation
LocationSouth of Hanneford
RouteState Highway 1
Coordinates47.3096, -98.1866
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating43.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length204 ft (62.2 m)
Longest span80 ft (24.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2019)
Projected traffic750 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

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 Nd Highway 1 over Bn Railroad Separation built?

It was built in 2009, making it 16 years old in 2025.

What condition is Nd Highway 1 over Bn Railroad Separation 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 2024.

How much traffic does Nd Highway 1 over Bn Railroad Separation carry?

About 750 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is Nd Highway 1 over Bn Railroad Separation?

The structure is 204 ft (62.2 m) long with a longest span of 80 ft (24.4 m) and a deck 43 ft wide.

Who owns Nd Highway 1 over Bn Railroad Separation?

It is owned by the State Highway Agency.