US Bridges

CR 356 over Sturgeon River

Good

St. Louis County, Minnesota · 1.5 MI N of JCT CSAH22 · Structure no. 69591

Built
2016
9 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
1 main span
Daily traffic
21
2015 count
Owner
County
County Highway Agency

About this bridge

CR 356 over Sturgeon River is a prestressed concrete stringer/multi-beam or girder carrying CR 356 over Sturgeon River in St. Louis County, Minnesota. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21 vehicles a day, projected to reach 21 by 2035. The structure is 126 ft (38.5 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCR 356
CrossesSturgeon River
Location1.5 MI N of JCT CSAH22
RouteCounty Highway 356
CountySt. Louis County
StateMinnesota
Coordinates47.79902, -92.95516
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length126 ft (38.5 m)
Longest span122 ft (37.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2015)
Projected traffic21 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 356 over Sturgeon River built?

It was built in 2016, making it 9 years old in 2025.

What condition is CR 356 over Sturgeon 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 August 2023.

How much traffic does CR 356 over Sturgeon River carry?

About 21 vehicles per day (2015 count).

How long is CR 356 over Sturgeon River?

The structure is 126 ft (38.5 m) long with a longest span of 122 ft (37.2 m) and a deck 31 ft wide.

Who owns CR 356 over Sturgeon River?

It is owned by the County Highway Agency.