US Bridges

Mn 210 over ST Louis River

Fair

Carlton County, Minnesota · 1.0 MI E of JCT TH 45 · Structure no. 09001

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Truss - Thru
Steel
Length
219 ft
1 main span
Daily traffic
1,641
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 210 over ST Louis River is a steel truss - thru carrying Mn 210 over ST Louis River in Carlton County, Minnesota. It was built in 1961, so it is 64 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 1,641 vehicles a day, roughly 6% of them trucks, projected to reach 1,350 by 2042. The structure is 219 ft (66.8 m) long and 35 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesMn 210
CrossesST Louis River
Location1.0 MI E of JCT TH 45
RouteState Highway 210
CountyCarlton County
StateMinnesota
Coordinates46.66479, -92.40447
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length219 ft (66.8 m)
Longest span214 ft (65.1 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic1,641 (2022)
Projected traffic1,350 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed14.9 mi (24 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$1,000 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 210 over ST Louis River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Mn 210 over ST Louis 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 Mn 210 over ST Louis River carry?

About 1,641 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Mn 210 over ST Louis River?

The structure is 219 ft (66.8 m) long with a longest span of 214 ft (65.1 m) and a deck 35 ft wide.

Who owns Mn 210 over ST Louis River?

It is owned by the State Highway Agency.