County Road over Bn Railroad

FairPosted for load

Pierce County, North Dakota · 4 South 8 East of Alymer · Structure no. 000000035113460

Built: 1955; 70 years old
Condition: Fair; inspected April 2024
Type: Stringer/Multi-beam or Girder; Wood or Timber
Length: 123 ft; 7 main spans
Daily traffic: 5; 2018 count
Owner: Railroad; Railroad

About this bridge

County Road over Bn Railroad is a wood or timber stringer/multi-beam or girder carrying County Road over Bn Railroad in Pierce County, North Dakota. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 5 by 2038. The structure is 123 ft (37.5 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road

CrossesBn Railroad

Location4 South 8 East of Alymer

RouteCounty Highway 0

CountyPierce County

StateNorth Dakota

Coordinates47.87946, -100.00534

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.

Component	Rating	Meaning
Deck	6 Satisfactory	Structural elements show some minor deterioration.
Superstructure	6 Satisfactory	Structural elements show some minor deterioration.
Substructure	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionApril 2024

Inspection intervalevery 24 months

Operating statusPosted for load restriction

ScourBridge not over waterway

Structural evaluation4: Meets minimum tolerable limits to be left in place as is

Deck geometry4: Meets minimum tolerable limits to be left in place as is

Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is

Operating rating21.9 US tons

Inventory rating16.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialWood or Timber

DeckWood or timber

Main spans7

Design loadUnknown

Structure length123 ft (37.5 m)

Longest span18 ft (5.5 m)

Deck width20 ft (6.1 m)

Roadway width18 ft (5.5 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2018)

Projected traffic5 by 2038

Trucks—

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesRailroad

Detour if closed1.9 mi (3 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerRailroad

Maintained byRailroad

Historic statusHistorical significance not determinable at this time

Work proposedWidening of existing bridge without deck rehabilitation

Estimated improvement cost$327,000

NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road over Bn Railroad built?

It was built in 1955, making it 70 years old in 2025.

What condition is County Road over Bn Railroad 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 April 2024.

How much traffic does County Road over Bn Railroad carry?

About 5 vehicles per day (2018 count).

How long is County Road over Bn Railroad?

The structure is 123 ft (37.5 m) long with a longest span of 18 ft (5.5 m) and a deck 20 ft wide.

Who owns County Road over Bn Railroad?

It is owned by the Railroad.