US Bridges

M 37 over Little Cannon River

Fair

Goodhue County, Minnesota · 0.1 MI W of JCT TH 20 · Structure no. 25526

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
198 ft
2 main spans
Daily traffic
300
1986 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 37 over Little Cannon River is a steel continuous stringer/multi-beam or girder carrying M 37 over Little Cannon River in Goodhue County, Minnesota. It was built in 1978, so it is 47 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 6 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 300 vehicles a day, projected to reach 300 by 2029. The structure is 198 ft (60.5 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesM 37
CrossesLittle Cannon River
Location0.1 MI W of JCT TH 20
RouteCity Street 37
Coordinates44.50828, -92.90783
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating50.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length198 ft (60.5 m)
Longest span97 ft (29.7 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (1986)
Projected traffic300 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 37 over Little Cannon River built?

It was built in 1978, making it 47 years old in 2025.

What condition is M 37 over Little Cannon River 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 November 2023.

How much traffic does M 37 over Little Cannon River carry?

About 300 vehicles per day (1986 count).

How long is M 37 over Little Cannon River?

The structure is 198 ft (60.5 m) long with a longest span of 97 ft (29.7 m) and a deck 58 ft wide.

Who owns M 37 over Little Cannon River?

It is owned by the City or Municipal Highway Agency.