US Bridges

US 59 over Red Lake River

Fair

Pennington County, Minnesota · In Thief River Falls · Structure no. 5327

Built
1934
91 years old, rebuilt 1985
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
315 ft
5 main spans
Daily traffic
9,400
2019 count
Owner
State
State Highway Agency

About this bridge

US 59 over Red Lake River is a steel continuous stringer/multi-beam or girder carrying US 59 over Red Lake River in Pennington County, Minnesota. It was built in 1934 and reconstructed in 1985, so it is 91 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 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 9,400 vehicles a day, roughly 6% of them trucks, projected to reach 10,100 by 2039. The structure is 315 ft (95.9 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 59
CrossesRed Lake River
LocationIn Thief River Falls
RouteU.S. Route 59
Coordinates48.11921, -96.17356
Functional classUrban Other Principal 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating55.6 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+2 approach)
Design loadHS 20
Structure length315 ft (95.9 m)
Longest span55 ft (16.8 m)
Deck width66 ft (20.2 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,400 (2019)
Projected traffic10,100 by 2039
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 US 59 over Red Lake River built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1985.

What condition is US 59 over Red Lake 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 August 2024.

How much traffic does US 59 over Red Lake River carry?

About 9,400 vehicles per day (2019 count), of which roughly 6% are trucks.

How long is US 59 over Red Lake River?

The structure is 315 ft (95.9 m) long with a longest span of 55 ft (16.8 m) and a deck 66 ft wide.

Who owns US 59 over Red Lake River?

It is owned by the State Highway Agency.