US Bridges

County Trail over Coulee

PoorClosed to traffic

Benson County, North Dakota · 6 E 1 N Minnewaukan · Structure no. 000000003134200

Built
1942
83 years old
Condition
Poor
inspected August 2020
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
2 main spans
Daily traffic
1
2018 count
Owner
County
County Highway Agency

About this bridge

County Trail over Coulee is a steel stringer/multi-beam or girder carrying County Trail over Coulee in Benson County, North Dakota. It was built in 1942, so it is 83 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: closed to all traffic.

It carries about 1 vehicles a day, projected to reach 1 by 2038. The structure is 39 ft (11.9 m) long and 20 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCounty Trail
CrossesCoulee
Location6 E 1 N Minnewaukan
RouteCounty Highway 0
Coordinates48.08616, -99.12516
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2020
Inspection interval—
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2018)
Projected traffic1 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$218,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Trail over Coulee built?

It was built in 1942, making it 83 years old in 2025.

What condition is County Trail over Coulee 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 August 2020.

How much traffic does County Trail over Coulee carry?

About 1 vehicles per day (2018 count).

How long is County Trail over Coulee?

The structure is 39 ft (11.9 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns County Trail over Coulee?

It is owned by the County Highway Agency.