US Bridges

86th ST SE over S. Branch Beaver Creek

Good

Emmons County, North Dakota · 2 North 9 East Strasburg · Structure no. 000000015131321

Built
1981
44 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
83 ft
2 main spans
Daily traffic
52
2019 count
Owner
County
County Highway Agency

About this bridge

86th ST SE over S. Branch Beaver Creek is a prestressed concrete box beam or girders - single or spread carrying 86th ST SE over S. Branch Beaver Creek in Emmons County, North Dakota. It was built in 1981, so it is 44 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 52 vehicles a day, projected to reach 60 by 2039. The structure is 83 ft (25.3 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries86th ST SE
CrossesS. Branch Beaver Creek
Location2 North 9 East Strasburg
RouteCounty Highway 1529
Coordinates46.17385, -99.96808
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.7 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length83 ft (25.3 m)
Longest span38 ft (11.6 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2019)
Projected traffic60 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 86th ST SE over S. Branch Beaver Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is 86th ST SE over S. Branch Beaver 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 October 2023.

How much traffic does 86th ST SE over S. Branch Beaver Creek carry?

About 52 vehicles per day (2019 count).

How long is 86th ST SE over S. Branch Beaver Creek?

The structure is 83 ft (25.3 m) long with a longest span of 38 ft (11.6 m) and a deck 32 ft wide.

Who owns 86th ST SE over S. Branch Beaver Creek?

It is owned by the County Highway Agency.