US Bridges

Mn 1 over West Two Rivers

Fair

St. Louis County, Minnesota · 1.7 MI W of Tower · Structure no. 69016

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
3,520
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 1 over West Two Rivers is a concrete culvert carrying Mn 1 over West Two Rivers in St. Louis County, Minnesota. It was built in 1963, so it is 62 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 3,520 vehicles a day, roughly 11% of them trucks, projected to reach 3,800 by 2042. The structure is 33 ft (10 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMn 1
CrossesWest Two Rivers
Location1.7 MI W of Tower
RouteState Highway 1
Coordinates47.79728, -92.30437
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length33 ft (10 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,520 (2022)
Projected traffic3,800 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$31 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 1 over West Two Rivers built?

It was built in 1963, making it 62 years old in 2025.

What condition is Mn 1 over West Two Rivers 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 May 2024.

How much traffic does Mn 1 over West Two Rivers carry?

About 3,520 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Mn 1 over West Two Rivers?

The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).

Who owns Mn 1 over West Two Rivers?

It is owned by the State Highway Agency.