US Bridges

T 507 over S Fk Groundhouse River

Fair

Kanabec County, Minnesota · 0.7 MI S of JCT CR 49 · Structure no. 7262

Built
1959
66 years old
Condition
Fair
inspected November 2023
Type
Slab
Wood or Timber
Length
44 ft
2 main spans
Daily traffic
90
2002 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 507 over S Fk Groundhouse River is a wood or timber slab carrying T 507 over S Fk Groundhouse River in Kanabec County, Minnesota. It was built in 1959, so it is 66 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 90 vehicles a day, projected to reach 90 by 2029. The structure is 44 ft (13.4 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesT 507
CrossesS Fk Groundhouse River
Location0.7 MI S of JCT CR 49
RouteCounty Highway 507
CountyKanabec County
StateMinnesota
Coordinates45.76909, -93.49361
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 20
Structure length44 ft (13.4 m)
Longest span21 ft (6.4 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2002)
Projected traffic90 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$196 million
NavigationNo navigation control on waterway

Frequently asked questions

When was T 507 over S Fk Groundhouse River built?

It was built in 1959, making it 66 years old in 2025.

What condition is T 507 over S Fk Groundhouse 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 November 2023.

How much traffic does T 507 over S Fk Groundhouse River carry?

About 90 vehicles per day (2002 count).

How long is T 507 over S Fk Groundhouse River?

The structure is 44 ft (13.4 m) long with a longest span of 21 ft (6.4 m) and a deck 31 ft wide.

Who owns T 507 over S Fk Groundhouse River?

It is owned by the Town or Township Highway Agency and maintained by the County Highway Agency.