US Bridges

70th ST SW over Creek

Good

Hettinger County, North Dakota · 2 North 3 West of Mott · Structure no. 000000021125160

Built
1958
67 years old
Condition
Good
inspected September 2024
Type
Channel Beam
Concrete
Length
26 ft
1 main span
Daily traffic
90
2018 count
Owner
County
County Highway Agency

About this bridge

70th ST SW over Creek is a concrete channel beam carrying 70th ST SW over Creek in Hettinger County, North Dakota. It was built in 1958, so it is 67 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 90 vehicles a day, projected to reach 90 by 2038. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Carries70th ST SW
CrossesCreek
Location2 North 3 West of Mott
RouteCounty Highway 2114
Coordinates46.39981, -102.40527
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.8 US tons
Inventory rating38.3 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2018)
Projected traffic90 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 70th ST SW over Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is 70th ST SW 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 September 2024.

How much traffic does 70th ST SW over Creek carry?

About 90 vehicles per day (2018 count).

How long is 70th ST SW over Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns 70th ST SW over Creek?

It is owned by the County Highway Agency.