US Bridges

Mn 210 over Ripple River

Fair

Aitkin County, Minnesota · 0.2 MI E of W JCT TH 169 · Structure no. 01005

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
82 ft
3 main spans
Daily traffic
8,900
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 210 over Ripple River is a steel continuous stringer/multi-beam or girder carrying Mn 210 over Ripple River in Aitkin County, Minnesota. It was built in 1980, so it is 45 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 8,900 vehicles a day, roughly 8% of them trucks, projected to reach 8,900 by 2039. The structure is 82 ft (25 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMn 210
CrossesRipple River
Location0.2 MI E of W JCT TH 169
RouteState Highway 210
CountyAitkin County
StateMinnesota
Coordinates46.53336, -93.70247
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109.8 US tons
Inventory rating65.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25 m)
Longest span30 ft (9 m)
Deck width62 ft (19 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,900 (2019)
Projected traffic8,900 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 Mn 210 over Ripple River built?

It was built in 1980, making it 45 years old in 2025.

What condition is Mn 210 over Ripple 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 Ripple River carry?

About 8,900 vehicles per day (2019 count), of which roughly 8% are trucks.

How long is Mn 210 over Ripple River?

The structure is 82 ft (25 m) long with a longest span of 30 ft (9 m) and a deck 62 ft wide.

Who owns Mn 210 over Ripple River?

It is owned by the State Highway Agency.