US Bridges

County Road 0506 over Souris River

Fair

Bottineau County, North Dakota · 2 East of Westhope · Structure no. 000000005125070

Built
1980
45 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
240 ft
3 main spans
Daily traffic
390
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 0506 over Souris River is a prestressed concrete continuous box beam or girders - single or spread carrying County Road 0506 over Souris River in Bottineau County, North Dakota. It was built in 1980, so it is 45 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 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 390 vehicles a day, roughly 13% of them trucks, projected to reach 560 by 2038. The structure is 240 ft (73.2 m) long and 39 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCounty Road 0506
CrossesSouris River
Location2 East of Westhope
RouteCounty Highway 506
CountyBottineau County
StateNorth Dakota
Coordinates48.90844, -100.96028
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.9 US tons
Inventory rating25.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length240 ft (73.2 m)
Longest span77 ft (23.5 m)
Deck width39 ft (11.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic390 (2018)
Projected traffic560 by 2038
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Road 0506 over Souris River built?

It was built in 1980, making it 45 years old in 2025.

What condition is County Road 0506 over Souris River 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 September 2024.

How much traffic does County Road 0506 over Souris River carry?

About 390 vehicles per day (2018 count), of which roughly 13% are trucks.

How long is County Road 0506 over Souris River?

The structure is 240 ft (73.2 m) long with a longest span of 77 ft (23.5 m) and a deck 39 ft wide.

Who owns County Road 0506 over Souris River?

It is owned by the County Highway Agency.