US Bridges

Nd Highway 18 over So. Branch Goose River

Fair

Traill County, North Dakota · 2 West of Portland · Structure no. 0018125691

Built
1985
40 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
178 ft
3 main spans
Daily traffic
1,210
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 18 over So. Branch Goose River is a prestressed concrete continuous box beam or girders - single or spread carrying Nd Highway 18 over So. Branch Goose River in Traill 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 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 1,210 vehicles a day, roughly 18% of them trucks, projected to reach 1,210 by 2039. The structure is 178 ft (54.3 m) long and 43 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesNd Highway 18
CrossesSo. Branch Goose River
Location2 West of Portland
RouteState Highway 18
CountyTraill County
StateNorth Dakota
Coordinates47.50097, -97.40549
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 rating89.5 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span63 ft (19.2 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,210 (2019)
Projected traffic1,210 by 2039
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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$669,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Nd Highway 18 over So. Branch Goose River built?

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

What condition is Nd Highway 18 over So. Branch Goose River 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 September 2023.

How much traffic does Nd Highway 18 over So. Branch Goose River carry?

About 1,210 vehicles per day (2019 count), of which roughly 18% are trucks.

How long is Nd Highway 18 over So. Branch Goose River?

The structure is 178 ft (54.3 m) long with a longest span of 63 ft (19.2 m) and a deck 43 ft wide.

Who owns Nd Highway 18 over So. Branch Goose River?

It is owned by the State Highway Agency.