US Bridges

Irrsr Nd Highway 6 over Creek

Good

Sioux County, North Dakota · 4 North of Selfridge · Structure no. 0006016029

Built
1948
77 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
250
2017 count
Owner
State
State Highway Agency

About this bridge

Irrsr Nd Highway 6 over Creek is a concrete culvert carrying Irrsr Nd Highway 6 over Creek in Sioux County, North Dakota. It was built in 1948, so it is 77 years old, older 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 250 vehicles a day, roughly 16% of them trucks, projected to reach 415 by 2037. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 39.8 mi (64 km).

CarriesIrrsr Nd Highway 6
CrossesCreek
Location4 North of Selfridge
RouteState Highway 6
Coordinates46.10396, -100.94778
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.7 US tons
Inventory rating45.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2017)
Projected traffic415 by 2037
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Irrsr Nd Highway 6 over Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is Irrsr Nd Highway 6 over 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 June 2024.

How much traffic does Irrsr Nd Highway 6 over Creek carry?

About 250 vehicles per day (2017 count), of which roughly 16% are trucks.

How long is Irrsr Nd Highway 6 over Creek?

The structure is 29 ft (8.7 m) long with a longest span of 9 ft (2.7 m).

Who owns Irrsr Nd Highway 6 over Creek?

It is owned by the State Highway Agency.