US Bridges

County Highway over Turtle River

Good

Grand Forks County, North Dakota · 2 West of Mekinock · Structure no. 000000018124130

Built
1955
70 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
105
2019 count
Owner
County
County Highway Agency

About this bridge

County Highway over Turtle River is a steel stringer/multi-beam or girder carrying County Highway over Turtle River in Grand Forks County, North Dakota. It was built in 1955, so it is 70 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 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 105 vehicles a day, roughly 12% of them trucks, projected to reach 250 by 2039. The structure is 51 ft (15.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Highway
CrossesTurtle River
Location2 West of Mekinock
RouteCounty Highway 1811
Coordinates48.00539, -97.39981
Functional classRural Major Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45.7 US tons
Inventory rating27.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length51 ft (15.5 m)
Longest span50 ft (15.2 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic105 (2019)
Projected traffic250 by 2039
Trucks12%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$50,000
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over Turtle River built?

It was built in 1955, making it 70 years old in 2025.

What condition is County Highway over Turtle River 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 August 2023.

How much traffic does County Highway over Turtle River carry?

About 105 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is County Highway over Turtle River?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns County Highway over Turtle River?

It is owned by the County Highway Agency.