US Bridges

County Highway over Coulee

Fair

Ramsey County, North Dakota · 4 East 5 North Edmore · Structure no. 000000036139040

Built
1935
90 years old, rebuilt 1974
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
70
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Coulee is a concrete culvert carrying County Highway over Coulee in Ramsey County, North Dakota. It was built in 1935 and reconstructed in 1974, so it is 90 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 70 vehicles a day, roughly 12% of them trucks, projected to reach 100 by 2037. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty Highway
CrossesCoulee
Location4 East 5 North Edmore
RouteCounty Highway 3609
CountyRamsey County
StateNorth Dakota
Coordinates48.48578, -98.35445
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2019)
Projected traffic100 by 2037
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 County Highway over Coulee built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1974.

What condition is County Highway over Coulee 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 November 2023.

How much traffic does County Highway over Coulee carry?

About 70 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is County Highway over Coulee?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns County Highway over Coulee?

It is owned by the County Highway Agency.