US Bridges

Irrft Nd Hiway 20 over Devils Lake Narrows

Fair

Ramsey County, North Dakota · 7 Southwest Devils Lake · Structure no. 0020096753

Built
2001
24 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
204 ft
2 main spans
Daily traffic
1,150
2019 count
Owner
State
State Highway Agency

About this bridge

Irrft Nd Hiway 20 over Devils Lake Narrows is a prestressed concrete continuous stringer/multi-beam or girder carrying Irrft Nd Hiway 20 over Devils Lake Narrows in Ramsey County, North Dakota. It was built in 2001, so it is 24 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 1,150 vehicles a day, roughly 10% of them trucks, projected to reach 1,150 by 2039. The structure is 204 ft (62.2 m) long and 43 ft wide. If it were closed, the detour would be 85.1 mi (137 km).

Location

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CarriesIrrft Nd Hiway 20
CrossesDevils Lake Narrows
Location7 Southwest Devils Lake
RouteState Highway 20
CountyRamsey County
StateNorth Dakota
Coordinates48.0264, -98.88074
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating62.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length204 ft (62.2 m)
Longest span98 ft (29.9 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,150 (2019)
Projected traffic1,150 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed85.1 mi (137 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 Irrft Nd Hiway 20 over Devils Lake Narrows built?

It was built in 2001, making it 24 years old in 2025.

What condition is Irrft Nd Hiway 20 over Devils Lake Narrows 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 Nd Hiway 20 over Devils Lake Narrows carry?

About 1,150 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Irrft Nd Hiway 20 over Devils Lake Narrows?

The structure is 204 ft (62.2 m) long with a longest span of 98 ft (29.9 m) and a deck 43 ft wide.

Who owns Irrft Nd Hiway 20 over Devils Lake Narrows?

It is owned by the State Highway Agency.