US Bridges

Mn 56 over Stream

Fair

Goodhue County, Minnesota · 0.2 MI N of JCT Csah 11 · Structure no. 6150

Built
1937
88 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
1,496
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 56 over Stream is a concrete culvert carrying Mn 56 over Stream in Goodhue County, Minnesota. It was built in 1937, so it is 88 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,496 vehicles a day, roughly 18% of them trucks, projected to reach 1,400 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 36 mi (58 km).

Location

Open in Google Maps
CarriesMn 56
CrossesStream
Location0.2 MI N of JCT Csah 11
RouteState Highway 56
CountyGoodhue County
StateMinnesota
Coordinates44.2135, -92.93342
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,496 (2022)
Projected traffic1,400 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed36 mi (58 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$33 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 56 over Stream built?

It was built in 1937, making it 88 years old in 2025.

What condition is Mn 56 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does Mn 56 over Stream carry?

About 1,496 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Mn 56 over Stream?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Mn 56 over Stream?

It is owned by the State Highway Agency.