US Bridges

12th Ave Nw-Wf over Sheyenne Diversion

Good

Cass County, North Dakota · City of West Fargo · Structure no. 0000WF20

Built
1991
34 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
251 ft
3 main spans
Daily traffic
2,000
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th Ave Nw-Wf over Sheyenne Diversion is a prestressed concrete continuous box beam or girders - single or spread carrying 12th Ave Nw-Wf over Sheyenne Diversion in Cass County, North Dakota. It was built in 1991, so it is 34 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 2,000 vehicles a day, roughly 6% of them trucks, projected to reach 2,300 by 2039. The structure is 251 ft (76.5 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries12th Ave Nw-Wf
CrossesSheyenne Diversion
LocationCity of West Fargo
RouteCity Street 9221
CountyCass County
StateNorth Dakota
Coordinates46.89144, -96.91794
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.6 US tons
Inventory rating45.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length251 ft (76.5 m)
Longest span83 ft (25.3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2019)
Projected traffic2,300 by 2039
Trucks6%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 12th Ave Nw-Wf over Sheyenne Diversion built?

It was built in 1991, making it 34 years old in 2025.

What condition is 12th Ave Nw-Wf over Sheyenne Diversion 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 June 2023.

How much traffic does 12th Ave Nw-Wf over Sheyenne Diversion carry?

About 2,000 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is 12th Ave Nw-Wf over Sheyenne Diversion?

The structure is 251 ft (76.5 m) long with a longest span of 83 ft (25.3 m) and a deck 43 ft wide.

Who owns 12th Ave Nw-Wf over Sheyenne Diversion?

It is owned by the City or Municipal Highway Agency.