US Bridges

County Highway over Poison Spring Creek

Fair

McKenzie County, North Dakota · 4 S. 8 W. Flat Rock Butte · Structure no. 000000027101530

Built
1992
33 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
20
2016 count
Owner
County
County Highway Agency

About this bridge

County Highway over Poison Spring Creek is a concrete culvert carrying County Highway over Poison Spring Creek in McKenzie County, North Dakota. It was built in 1992, so it is 33 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 20 vehicles a day, projected to reach 20 by 2036. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesPoison Spring Creek
Location4 S. 8 W. Flat Rock Butte
RouteCounty Highway 0
CountyMcKenzie County
StateNorth Dakota
Coordinates47.37355, -104.03562
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length22 ft (6.7 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 traffic20 (2016)
Projected traffic20 by 2036
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 Poison Spring Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is County Highway over Poison Spring Creek 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 June 2024.

How much traffic does County Highway over Poison Spring Creek carry?

About 20 vehicles per day (2016 count).

How long is County Highway over Poison Spring Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns County Highway over Poison Spring Creek?

It is owned by the County Highway Agency.