US Bridges

Mn 317 over Red River of the North

Fair

Marshall County, Minnesota · At N Dak State Line · Structure no. 5872

Built
1939
86 years old
Condition
Fair
inspected June 2024
Type
Truss - Thru
Steel
Length
412 ft
2 main spans
Daily traffic
330
2018 count
Owner
State
State Highway Agency

About this bridge

Mn 317 over Red River of the North is a steel truss - thru carrying Mn 317 over Red River of the North in Marshall County, Minnesota. It was built in 1939, so it is 86 years old, older than the Minnesota average of 38.5 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 330 vehicles a day, roughly 15% of them trucks, projected to reach 300 by 2038. The structure is 412 ft (125.6 m) long and 26 ft wide. If it were closed, the detour would be 29.2 mi (47 km).

Location

Open in Google Maps
CarriesMn 317
CrossesRed River of the North
LocationAt N Dak State Line
RouteState Highway 317
CountyMarshall County
StateMinnesota
Coordinates48.41342, -97.13745
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.1 US tons
Inventory rating22.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length412 ft (125.6 m)
Longest span200 ft (61 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic330 (2018)
Projected traffic300 by 2038
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.2 mi (47 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$634 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 317 over Red River of the North built?

It was built in 1939, making it 86 years old in 2025.

What condition is Mn 317 over Red River of the North 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 June 2024.

How much traffic does Mn 317 over Red River of the North carry?

About 330 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Mn 317 over Red River of the North?

The structure is 412 ft (125.6 m) long with a longest span of 200 ft (61 m) and a deck 26 ft wide.

Who owns Mn 317 over Red River of the North?

It is owned by the State Highway Agency.