US Bridges

County Highway over Bn Railroad

PoorPosted for load

Griggs County, North Dakota · 2 East 1 South Hannaford · Structure no. 000000020116260

Built
1924
101 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
170 ft
9 main spans
Daily traffic
24
2017 count
Owner
Railroad
Railroad

About this bridge

County Highway over Bn Railroad is a wood or timber stringer/multi-beam or girder carrying County Highway over Bn Railroad in Griggs County, North Dakota. It was built in 1924, so it is 101 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 24 vehicles a day, projected to reach 24 by 2037. The structure is 170 ft (51.8 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Highway
CrossesBn Railroad
Location2 East 1 South Hannaford
RouteCounty Highway 0
CountyGriggs County
StateNorth Dakota
Coordinates47.30337, -98.15181
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionNovember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating35.6 US tons
Inventory rating26.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans9
Design loadUnknown
Structure length170 ft (51.8 m)
Longest span21 ft (6.4 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2017)
Projected traffic24 by 2037
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 statusEligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Highway over Bn Railroad built?

It was built in 1924, making it 101 years old in 2025.

What condition is County Highway over Bn Railroad in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does County Highway over Bn Railroad carry?

About 24 vehicles per day (2017 count).

How long is County Highway over Bn Railroad?

The structure is 170 ft (51.8 m) long with a longest span of 21 ft (6.4 m) and a deck 22 ft wide.

Who owns County Highway over Bn Railroad?

It is owned by the Railroad.