US Bridges

CR 661 over Stone River

FairPosted for load

St. Louis County, Minnesota · 0.4 MI S of JCT Csah 28 · Structure no. 69574

Built
1985
40 years old
Condition
Fair
inspected May 2023
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
5
2011 count
Owner
County
County Highway Agency

About this bridge

CR 661 over Stone River is a wood or timber slab carrying CR 661 over Stone River in St. Louis County, Minnesota. It was built in 1985, so it is 40 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. Its operating status is: posted for load restriction.

It carries about 5 vehicles a day, projected to reach 5 by 2039. The structure is 32 ft (9.8 m) long and 26 ft wide. If it were closed, the detour would be 123 mi (198 km).

Location

Open in Google Maps
CarriesCR 661
CrossesStone River
Location0.4 MI S of JCT Csah 28
RouteCounty Highway 661
CountySt. Louis County
StateMinnesota
Coordinates47.20493, -92.68372
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span31 ft (9.3 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2011)
Projected traffic5 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 661 over Stone River built?

It was built in 1985, making it 40 years old in 2025.

What condition is CR 661 over Stone 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 May 2023.

How much traffic does CR 661 over Stone River carry?

About 5 vehicles per day (2011 count).

How long is CR 661 over Stone River?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.3 m) and a deck 26 ft wide.

Who owns CR 661 over Stone River?

It is owned by the County Highway Agency.