US Bridges

M 56 over US 12

Fair

Hennepin County, Minnesota · 3.1 MI W of JCT TH 494 · Structure no. 27131

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
244 ft
3 main spans
Daily traffic
4,150
2015 count
Owner
State
State Highway Agency

About this bridge

M 56 over US 12 is a steel continuous stringer/multi-beam or girder carrying M 56 over US 12 in Hennepin County, Minnesota. It was built in 1970, so it is 55 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 4,150 vehicles a day, projected to reach 4,150 by 2039. The structure is 244 ft (74.3 m) long and 59 ft wide.

CarriesM 56
CrossesUS 12
Location3.1 MI W of JCT TH 494
RouteCity Street 56
Coordinates44.97808, -93.52256
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating45.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length244 ft (74.3 m)
Longest span126 ft (38.5 m)
Deck width59 ft (17.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,150 (2015)
Projected traffic4,150 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M 56 over US 12 built?

It was built in 1970, making it 55 years old in 2025.

What condition is M 56 over US 12 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 September 2024.

How much traffic does M 56 over US 12 carry?

About 4,150 vehicles per day (2015 count).

How long is M 56 over US 12?

The structure is 244 ft (74.3 m) long with a longest span of 126 ft (38.5 m) and a deck 59 ft wide.

Who owns M 56 over US 12?

It is owned by the State Highway Agency.