US Bridges

M 61 over Rocky Run Creek

Good

St. Louis County, Minnesota · 0.6 MI E of JCT Csah 13 · Structure no. 69A90

Built
2024
1 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
352
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 61 over Rocky Run Creek is a prestressed concrete stringer/multi-beam or girder carrying M 61 over Rocky Run Creek in St. Louis County, Minnesota. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 352 vehicles a day, projected to reach 352 by 2044. The structure is 42 ft (12.7 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesM 61
CrossesRocky Run Creek
Location0.6 MI E of JCT Csah 13
RouteCity Street 61
Coordinates46.79299, -92.26784
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating102.2 US tons
Inventory rating56.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length42 ft (12.7 m)
Longest span37 ft (11.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic352 (2024)
Projected traffic352 by 2044
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 61 over Rocky Run Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is M 61 over Rocky Run Creek 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 October 2024.

How much traffic does M 61 over Rocky Run Creek carry?

About 352 vehicles per day (2024 count).

How long is M 61 over Rocky Run Creek?

The structure is 42 ft (12.7 m) long with a longest span of 37 ft (11.3 m) and a deck 35 ft wide.

Who owns M 61 over Rocky Run Creek?

It is owned by the City or Municipal Highway Agency.