US Bridges

Bismarck Expwy. over Bn & Cp Railway

Good

Burleigh County, North Dakota · 2 S 1 W of I-94 Exit 161 · Structure no. 0810004480

Built
1985
40 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
186 ft
3 main spans
Daily traffic
8,000
2019 count
Owner
State
State Highway Agency

About this bridge

Bismarck Expwy. over Bn & Cp Railway is a prestressed concrete continuous box beam or girders - single or spread carrying Bismarck Expwy. over Bn & Cp Railway in Burleigh County, North Dakota. It was built in 1985, so it is 40 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 8,000 vehicles a day, roughly 6% of them trucks, projected to reach 8,000 by 2039. The structure is 186 ft (56.7 m) long and 75 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesBismarck Expwy.
CrossesBn & Cp Railway
Location2 S 1 W of I-94 Exit 161
RouteState Highway 810
CountyBurleigh County
StateNorth Dakota
Coordinates46.79735, -100.74115
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating65.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span76 ft (23.2 m)
Deck width75 ft (23 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2019)
Projected traffic8,000 by 2039
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bismarck Expwy. over Bn & Cp Railway built?

It was built in 1985, making it 40 years old in 2025.

What condition is Bismarck Expwy. over Bn & Cp Railway 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 2024.

How much traffic does Bismarck Expwy. over Bn & Cp Railway carry?

About 8,000 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is Bismarck Expwy. over Bn & Cp Railway?

The structure is 186 ft (56.7 m) long with a longest span of 76 ft (23.2 m) and a deck 75 ft wide.

Who owns Bismarck Expwy. over Bn & Cp Railway?

It is owned by the State Highway Agency.