US Bridges

Mn 27 over Mississippi River

Fair

Morrison County, Minnesota · In Little Falls · Structure no. 5907

Built
1941
84 years old, rebuilt 1983
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
546 ft
5 main spans
Daily traffic
14,200
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 27 over Mississippi River is a steel continuous stringer/multi-beam or girder carrying Mn 27 over Mississippi River in Morrison County, Minnesota. It was built in 1941 and reconstructed in 1983, so it is 84 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 14,200 vehicles a day, roughly 4% of them trucks, projected to reach 13,800 by 2039. The structure is 546 ft (166.3 m) long and 70 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesMn 27
CrossesMississippi River
LocationIn Little Falls
RouteState Highway 27
Coordinates45.97713, -94.36836
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+5 approach)
Design loadH 15
Structure length546 ft (166.3 m)
Longest span100 ft (30.6 m)
Deck width70 ft (21.4 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,200 (2019)
Projected traffic13,800 by 2039
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 27 over Mississippi River built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1983.

What condition is Mn 27 over Mississippi 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 July 2024.

How much traffic does Mn 27 over Mississippi River carry?

About 14,200 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Mn 27 over Mississippi River?

The structure is 546 ft (166.3 m) long with a longest span of 100 ft (30.6 m) and a deck 70 ft wide.

Who owns Mn 27 over Mississippi River?

It is owned by the State Highway Agency.