US Bridges

M 12 over Clearwater River

FairPosted for load

Red Lake County, Minnesota · 0.1 MI W of JCT TH 59 · Structure no. 5407

Built
1935
90 years old
Condition
Fair
inspected August 2024
Type
Girder and Floorbeam System
Steel
Length
68 ft
1 main span
Daily traffic
59
1971 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 12 over Clearwater River is a steel girder and floorbeam system carrying M 12 over Clearwater River in Red Lake County, Minnesota. It was built in 1935, so it is 90 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. Its operating status is: posted for load restriction.

It carries about 59 vehicles a day, projected to reach 59 by 2029. The structure is 68 ft (20.7 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM 12
CrossesClearwater River
Location0.1 MI W of JCT TH 59
RouteCity Street 12
CountyRed Lake County
StateMinnesota
Coordinates47.92342, -96.04587
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; extensive scour has occurred
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating20.5 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span64 ft (19.5 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (1971)
Projected traffic59 by 2029
Trucks—
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 12 over Clearwater River built?

It was built in 1935, making it 90 years old in 2025.

What condition is M 12 over Clearwater 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 M 12 over Clearwater River carry?

About 59 vehicles per day (1971 count).

How long is M 12 over Clearwater River?

The structure is 68 ft (20.7 m) long with a longest span of 64 ft (19.5 m) and a deck 29 ft wide.

Who owns M 12 over Clearwater River?

It is owned by the City or Municipal Highway Agency.