US Bridges

Mn 13 over Im Rail

Fair

Freeborn County, Minnesota · 0.7 MI W of JCT TH 65 · Structure no. 24005

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
192 ft
3 main spans
Daily traffic
7,300
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 13 over Im Rail is a prestressed concrete stringer/multi-beam or girder carrying Mn 13 over Im Rail in Freeborn County, Minnesota. It was built in 1983, so it is 42 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 7,300 vehicles a day, roughly 4% of them trucks, projected to reach 7,600 by 2039. The structure is 192 ft (58.4 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 13
CrossesIm Rail
Location0.7 MI W of JCT TH 65
RouteState Highway 13
CountyFreeborn County
StateMinnesota
Coordinates43.64701, -93.38339
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.6 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length192 ft (58.4 m)
Longest span62 ft (19 m)
Deck width66 ft (20.1 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,300 (2019)
Projected traffic7,600 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 13 over Im Rail built?

It was built in 1983, making it 42 years old in 2025.

What condition is Mn 13 over Im Rail 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 2023.

How much traffic does Mn 13 over Im Rail carry?

About 7,300 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Mn 13 over Im Rail?

The structure is 192 ft (58.4 m) long with a longest span of 62 ft (19 m) and a deck 66 ft wide.

Who owns Mn 13 over Im Rail?

It is owned by the State Highway Agency.