US Bridges

M 6 over Stream

PoorPosted for load

Goodhue County, Minnesota · 0.4 MI S of JCT Csah 9 · Structure no. L0693

Built
1920
105 years old
Condition
Poor
inspected September 2024
Type
Girder and Floorbeam System
Concrete
Length
20 ft
1 main span
Daily traffic
11
1986 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

M 6 over Stream is a concrete girder and floorbeam system carrying M 6 over Stream in Goodhue County, Minnesota. It was built in 1920, so it is 105 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. Its operating status is: posted for load restriction.

It carries about 11 vehicles a day, projected to reach 11 by 2029. The structure is 20 ft (6.1 m) long and 18 ft wide. If it were closed, the detour would be 123 mi (198 km).

CarriesM 6
CrossesStream
Location0.4 MI S of JCT Csah 9
RouteCounty Highway 6
Coordinates44.39291, -92.62057
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.4 US tons
Inventory rating21.6 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span18 ft (5.5 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (1986)
Projected traffic11 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$225 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was M 6 over Stream built?

It was built in 1920, making it 105 years old in 2025.

What condition is M 6 over Stream 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 September 2024.

How much traffic does M 6 over Stream carry?

About 11 vehicles per day (1986 count).

How long is M 6 over Stream?

The structure is 20 ft (6.1 m) long with a longest span of 18 ft (5.5 m) and a deck 18 ft wide.

Who owns M 6 over Stream?

It is owned by the Town or Township Highway Agency.