US Bridges

County Road 86 over Muskrat Creek

Good

Morton County, North Dakota · 5 North of Almont · Structure no. 000000030128120

Built
1999
26 years old
Condition
Good
inspected July 2021
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
155
2018 count
Owner
County
County Highway Agency

About this bridge

County Road 86 over Muskrat Creek is a concrete culvert carrying County Road 86 over Muskrat Creek in Morton County, North Dakota. It was built in 1999, so it is 26 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 155 vehicles a day, roughly 10% of them trucks, projected to reach 155 by 2038. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 11.8 mi (19 km).

CarriesCounty Road 86
CrossesMuskrat Creek
Location5 North of Almont
RouteCounty Highway 3027
Coordinates46.80993, -101.51118
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
Channel and channel protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic155 (2018)
Projected traffic155 by 2038
Trucks10%
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 86 over Muskrat Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is County Road 86 over Muskrat Creek 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 July 2021.

How much traffic does County Road 86 over Muskrat Creek carry?

About 155 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is County Road 86 over Muskrat Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns County Road 86 over Muskrat Creek?

It is owned by the County Highway Agency.