US Bridges

B-Dike Road over Outlet of Long L. Unit I

GoodPosted for load

Burleigh County, North Dakota · 0.7 MI Ssw of Hq · Structure no. 000062522-00022

Built
1953
72 years old, rebuilt 1998
Condition
Good
inspected August 2024
Type
Culvert
Concrete Continuous
Length
54 ft
5 main spans
Daily traffic
50
2024 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

B-Dike Road over Outlet of Long L. Unit I is a concrete continuous culvert carrying B-Dike Road over Outlet of Long L. Unit I in Burleigh County, North Dakota. It was built in 1953 and reconstructed in 1998, so it is 72 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 60 by 2044. The structure is 54 ft (16.5 m) long and 21 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesB-Dike Road
CrossesOutlet of Long L. Unit I
Location0.7 MI Ssw of Hq
RouteFederal Lands Road 0
Coordinates46.6655, -100.23483
Functional classRural Local

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating23 US tons
Inventory rating17 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length54 ft (16.5 m)
Longest span11 ft (3.4 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic50 (2024)
Projected traffic60 by 2044
Trucks0%
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

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
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 B-Dike Road over Outlet of Long L. Unit I built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1998.

What condition is B-Dike Road over Outlet of Long L. Unit I 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 August 2024.

How much traffic does B-Dike Road over Outlet of Long L. Unit I carry?

About 50 vehicles per day (2024 count).

How long is B-Dike Road over Outlet of Long L. Unit I?

The structure is 54 ft (16.5 m) long with a longest span of 11 ft (3.4 m) and a deck 21 ft wide.

Who owns B-Dike Road over Outlet of Long L. Unit I?

It is owned by the Bureau of Fish and Wildlife.