US Bridges

57th Street SW over Beaver Creek

Fair

Hettinger County, North Dakota · 14 North 1 East of Mott · Structure no. 000000021130030

Built
1960
65 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Concrete
Length
26 ft
1 main span
Daily traffic
65
2018 count
Owner
County
County Highway Agency

About this bridge

57th Street SW over Beaver Creek is a concrete channel beam carrying 57th Street SW over Beaver Creek in Hettinger County, North Dakota. It was built in 1960, so it is 65 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 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 65 vehicles a day, projected to reach 85 by 2038. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Carries57th Street SW
CrossesBeaver Creek
Location14 North 1 East of Mott
RouteCounty Highway 2106
Coordinates46.58882, -102.30091
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to 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 width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2018)
Projected traffic85 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 57th Street SW over Beaver Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is 57th Street SW over Beaver 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 October 2024.

How much traffic does 57th Street SW over Beaver Creek carry?

About 65 vehicles per day (2018 count).

How long is 57th Street SW over Beaver 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 57th Street SW over Beaver Creek?

It is owned by the County Highway Agency.