US Bridges

I 90 over Im Rail

Fair

Freeborn County, Minnesota · 2.7 MI E of JCT TH 109 · Structure no. 24838

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
4,355
2021 count
Owner
State
State Highway Agency

About this bridge

I 90 over Im Rail is a prestressed concrete stringer/multi-beam or girder carrying I 90 over Im Rail in Freeborn 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 4,355 vehicles a day, roughly 28% of them trucks, projected to reach 4,400 by 2041. The structure is 174 ft (53.1 m) long and 45 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesI 90
CrossesIm Rail
Location2.7 MI E of JCT TH 109
RouteInterstate 90
CountyFreeborn County
StateMinnesota
Coordinates43.66956, -93.51105
Functional classRural Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.1 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53.1 m)
Longest span57 ft (17.3 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,355 (2021)
Projected traffic4,400 by 2041
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 90 over Im Rail built?

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

What condition is I 90 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 August 2023.

How much traffic does I 90 over Im Rail carry?

About 4,355 vehicles per day (2021 count), of which roughly 28% are trucks.

How long is I 90 over Im Rail?

The structure is 174 ft (53.1 m) long with a longest span of 57 ft (17.3 m) and a deck 45 ft wide.

Who owns I 90 over Im Rail?

It is owned by the State Highway Agency.