US Bridges

I 35 over Im Rail

Fair

Freeborn County, Minnesota · 2.6 MI S of JCT TH 90 · Structure no. 24829

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
139 ft
3 main spans
Daily traffic
11,200
2019 count
Owner
State
State Highway Agency

About this bridge

I 35 over Im Rail is a steel continuous stringer/multi-beam or girder carrying I 35 over Im Rail in Freeborn County, Minnesota. It was built in 1971, so it is 54 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 11,200 vehicles a day, roughly 20% of them trucks, projected to reach 11,950 by 2039. The structure is 139 ft (42.5 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 35
CrossesIm Rail
Location2.6 MI S of JCT TH 90
RouteInterstate 35
CountyFreeborn County
StateMinnesota
Coordinates43.64817, -93.32307
Functional classUrban 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 rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length139 ft (42.5 m)
Longest span54 ft (16.5 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2019)
Projected traffic11,950 by 2039
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 35 over Im Rail built?

It was built in 1971, making it 54 years old in 2025.

What condition is I 35 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 35 over Im Rail carry?

About 11,200 vehicles per day (2019 count), of which roughly 20% are trucks.

How long is I 35 over Im Rail?

The structure is 139 ft (42.5 m) long with a longest span of 54 ft (16.5 m) and a deck 45 ft wide.

Who owns I 35 over Im Rail?

It is owned by the State Highway Agency.