US Bridges

Irrft County Hiway over Sheyenne River

Fair

Eddy County, North Dakota · 3 South Warwick · Structure no. 000000014127030

Built
1959
66 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
150 ft
3 main spans
Daily traffic
100
2019 count
Owner
County
County Highway Agency

About this bridge

Irrft County Hiway over Sheyenne River is a steel continuous stringer/multi-beam or girder carrying Irrft County Hiway over Sheyenne River in Eddy County, North Dakota. It was built in 1959, so it is 66 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 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 100 vehicles a day, projected to reach 50 by 2039. The structure is 150 ft (45.7 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIrrft County Hiway
CrossesSheyenne River
Location3 South Warwick
RouteCounty Highway 1427
CountyEddy County
StateNorth Dakota
Coordinates47.80553, -98.71758
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating47 US tons
Inventory rating28.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length150 ft (45.7 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2019)
Projected traffic50 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Irrft County Hiway over Sheyenne River built?

It was built in 1959, making it 66 years old in 2025.

What condition is Irrft County Hiway over Sheyenne 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 October 2023.

How much traffic does Irrft County Hiway over Sheyenne River carry?

About 100 vehicles per day (2019 count).

How long is Irrft County Hiway over Sheyenne River?

The structure is 150 ft (45.7 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns Irrft County Hiway over Sheyenne River?

It is owned by the County Highway Agency.