US Bridges

Mn 105 over Turtle Creek

Good

Mower County, Minnesota · 0.7 MI E of JCT TH 90 · Structure no. 50007

Built
1988
37 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
156 ft
2 main spans
Daily traffic
5,777
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 105 over Turtle Creek is a prestressed concrete stringer/multi-beam or girder carrying Mn 105 over Turtle Creek in Mower County, Minnesota. It was built in 1988, so it is 37 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,777 vehicles a day, roughly 5% of them trucks, projected to reach 6,000 by 2042. The structure is 156 ft (47.5 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMn 105
CrossesTurtle Creek
Location0.7 MI E of JCT TH 90
RouteState Highway 105
CountyMower County
StateMinnesota
Coordinates43.66664, -93.00671
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.3 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span75 ft (23 m)
Deck width66 ft (20.2 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,777 (2022)
Projected traffic6,000 by 2042
Trucks5%
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

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 105 over Turtle Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Mn 105 over Turtle Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Mn 105 over Turtle Creek carry?

About 5,777 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Mn 105 over Turtle Creek?

The structure is 156 ft (47.5 m) long with a longest span of 75 ft (23 m) and a deck 66 ft wide.

Who owns Mn 105 over Turtle Creek?

It is owned by the State Highway Agency.