US Bridges

M 12 over Garvin Brook

Good

Winona County, Minnesota · 0.2 MI N JCT TH 61 · Structure no. 85009

Built
2008
17 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
212 ft
2 main spans
Daily traffic
350
1986 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 12 over Garvin Brook is a prestressed concrete stringer/multi-beam or girder carrying M 12 over Garvin Brook in Winona County, Minnesota. It was built in 2008, so it is 17 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 350 vehicles a day, projected to reach 350 by 2029. The structure is 212 ft (64.7 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM 12
CrossesGarvin Brook
Location0.2 MI N JCT TH 61
RouteCity Street 12
CountyWinona County
StateMinnesota
Coordinates44.09272, -91.74799
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 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 alignment8: Equal to present desirable criteria
Operating rating109.8 US tons
Inventory rating59.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length212 ft (64.7 m)
Longest span100 ft (30.6 m)
Deck width49 ft (14.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (1986)
Projected traffic350 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 12 over Garvin Brook built?

It was built in 2008, making it 17 years old in 2025.

What condition is M 12 over Garvin Brook 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 November 2023.

How much traffic does M 12 over Garvin Brook carry?

About 350 vehicles per day (1986 count).

How long is M 12 over Garvin Brook?

The structure is 212 ft (64.7 m) long with a longest span of 100 ft (30.6 m) and a deck 49 ft wide.

Who owns M 12 over Garvin Brook?

It is owned by the City or Municipal Highway Agency.