US Bridges

T 512 over Groundhouse River

Good

Kanabec County, Minnesota · 1.5 MI E of Csah 10 · Structure no. R0601

Built
2009
16 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
50 ft
1 main span
Daily traffic
1
2009 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

T 512 over Groundhouse River is a wood or timber stringer/multi-beam or girder carrying T 512 over Groundhouse River in Kanabec County, Minnesota. It was built in 2009, so it is 16 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1 vehicles a day, projected to reach 1 by 2029. The structure is 50 ft (15.2 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesT 512
CrossesGroundhouse River
Location1.5 MI E of Csah 10
RouteCounty Highway 512
Coordinates45.88104, -93.505
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating69.8 US tons
Inventory rating49.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 25 or greater
Structure length50 ft (15.2 m)
Longest span49 ft (14.8 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2009)
Projected traffic1 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

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 T 512 over Groundhouse River built?

It was built in 2009, making it 16 years old in 2025.

What condition is T 512 over Groundhouse River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does T 512 over Groundhouse River carry?

About 1 vehicles per day (2009 count).

How long is T 512 over Groundhouse River?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (14.8 m) and a deck 22 ft wide.

Who owns T 512 over Groundhouse River?

It is owned by the State Park, Forest, or Reservation Agency.