US Bridges

County HWY 31 over County Drain # 10

Good

Cass County, North Dakota · 1.5 North of Co.Hwy # 20 · Structure no. 000000009143200

Built
2008
17 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

County HWY 31 over County Drain # 10 is a concrete culvert carrying County HWY 31 over County Drain # 10 in Cass County, North Dakota. It was built in 2008, so it is 17 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 120 by 2039. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCounty HWY 31
CrossesCounty Drain # 10
Location1.5 North of Co.Hwy # 20
RouteCounty Highway 31
CountyCass County
StateNorth Dakota
Coordinates46.95543, -96.80596
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.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior 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 length21 ft (6.4 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 traffic100 (2019)
Projected traffic120 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 HWY 31 over County Drain # 10 built?

It was built in 2008, making it 17 years old in 2025.

What condition is County HWY 31 over County Drain # 10 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 September 2021.

How much traffic does County HWY 31 over County Drain # 10 carry?

About 100 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is County HWY 31 over County Drain # 10?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns County HWY 31 over County Drain # 10?

It is owned by the County Highway Agency.