US Bridges

County Highway over Swan Creek

Fair

Cass County, North Dakota · 2 North 4 West Casselton · Structure no. 000000009120210

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Slab
Wood or Timber
Length
72 ft
3 main spans
Daily traffic
50
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Swan Creek is a wood or timber slab carrying County Highway over Swan Creek in Cass County, North Dakota. It was built in 1986, so it is 39 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 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 50 vehicles a day, projected to reach 50 by 2039. The structure is 72 ft (21.9 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Highway
CrossesSwan Creek
Location2 North 4 West Casselton
RouteCounty Highway 0
CountyCass County
StateNorth Dakota
Coordinates46.93399, -97.2953
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating66.2 US tons
Inventory rating46.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadUnknown
Structure length72 ft (21.9 m)
Longest span31 ft (9.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2019)
Projected traffic50 by 2039
Trucks—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$160,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Swan Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Highway over Swan 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 May 2023.

How much traffic does County Highway over Swan Creek carry?

About 50 vehicles per day (2019 count).

How long is County Highway over Swan Creek?

The structure is 72 ft (21.9 m) long with a longest span of 31 ft (9.4 m) and a deck 30 ft wide.

Who owns County Highway over Swan Creek?

It is owned by the County Highway Agency.