US Bridges

CR 851 over Stoney Brook River

Poor

St. Louis County, Minnesota · 1.9 MI W of JCT CSAH31 · Structure no. 88785

Built
1941
84 years old
Condition
Poor
inspected October 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
200
2011 count
Owner
County
County Highway Agency

About this bridge

CR 851 over Stoney Brook River is a concrete culvert carrying CR 851 over Stoney Brook River in St. Louis County, Minnesota. It was built in 1941, so it is 84 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 200 vehicles a day, projected to reach 200 by 2039. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesCR 851
CrossesStoney Brook River
Location1.9 MI W of JCT CSAH31
RouteCounty Highway 851
CountySt. Louis County
StateMinnesota
Coordinates46.78143, -92.63718
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.5 US tons
Inventory rating23 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic200 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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$1,000 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 851 over Stoney Brook River built?

It was built in 1941, making it 84 years old in 2025.

What condition is CR 851 over Stoney Brook River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does CR 851 over Stoney Brook River carry?

About 200 vehicles per day (2011 count).

How long is CR 851 over Stoney Brook River?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns CR 851 over Stoney Brook River?

It is owned by the County Highway Agency.