US Bridges

County Highway over Big Coulee

GoodClosed to traffic

Ramsey County, North Dakota · 1 East Churchs Ferry · Structure no. 000000036102190

Built
1986
39 years old
Condition
Good
inspected November 2022
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
52
2018 count
Owner
County
County Highway Agency

About this bridge

County Highway over Big Coulee is a prestressed concrete box beam or girders - single or spread carrying County Highway over Big Coulee in Ramsey County, North Dakota. It was built in 1986, so it is 39 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: closed to all traffic.

It carries about 52 vehicles a day, projected to reach 50 by 2038. The structure is 75 ft (22.9 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesBig Coulee
Location1 East Churchs Ferry
RouteCounty Highway 3620
CountyRamsey County
StateNorth Dakota
Coordinates48.26732, -99.17832
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection interval—
Operating statusClosed to all traffic
ScourScour critical; bridge has failed and is closed
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry7: Better than present minimum criteria
Waterway adequacy0: Immediate repair necessary to put back in service
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span71 ft (21.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2018)
Projected traffic50 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$272,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Big Coulee built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Highway over Big Coulee 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 November 2022.

How much traffic does County Highway over Big Coulee carry?

About 52 vehicles per day (2018 count).

How long is County Highway over Big Coulee?

The structure is 75 ft (22.9 m) long with a longest span of 71 ft (21.6 m) and a deck 31 ft wide.

Who owns County Highway over Big Coulee?

It is owned by the County Highway Agency.