US Bridges

Nd Highway 18 over Goose River

Fair

Traill County, North Dakota · City of Mayville · Structure no. 0018122478

Built
1966
59 years old, rebuilt 1983
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
175 ft
3 main spans
Daily traffic
4,800
2019 count
Owner
State
State Highway Agency

About this bridge

Nd Highway 18 over Goose River is a steel stringer/multi-beam or girder carrying Nd Highway 18 over Goose River in Traill County, North Dakota. It was built in 1966 and reconstructed in 1983, so it is 59 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 fair condition with a lowest component rating of 5 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 4,800 vehicles a day, roughly 8% of them trucks, projected to reach 4,800 by 2039. The structure is 175 ft (53.3 m) long and 51 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

CarriesNd Highway 18
CrossesGoose River
LocationCity of Mayville
RouteState Highway 18
Coordinates47.49797, -97.33824
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating74.4 US tons
Inventory rating44.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length175 ft (53.3 m)
Longest span66 ft (20.1 m)
Deck width51 ft (15.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2019)
Projected traffic4,800 by 2039
Trucks8%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nd Highway 18 over Goose River built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1983.

What condition is Nd Highway 18 over 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 Goose River carry?

About 4,800 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is Nd Highway 18 over Goose River?

The structure is 175 ft (53.3 m) long with a longest span of 66 ft (20.1 m) and a deck 51 ft wide.

Who owns Nd Highway 18 over Goose River?

It is owned by the State Highway Agency.