US Bridges

I 90 over TH 71

Fair

Jackson County, Minnesota · At JCT TH 71 · Structure no. 32812

Built
1971
54 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
307 ft
4 main spans
Daily traffic
3,409
2022 count
Owner
State
State Highway Agency

About this bridge

I 90 over TH 71 is a prestressed concrete stringer/multi-beam or girder carrying I 90 over TH 71 in Jackson 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 3,409 vehicles a day, roughly 36% of them trucks, projected to reach 4,400 by 2042. The structure is 307 ft (93.6 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI 90
CrossesTH 71
LocationAt JCT TH 71
RouteInterstate 90
CountyJackson County
StateMinnesota
Coordinates43.64024, -94.99499
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 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length307 ft (93.6 m)
Longest span80 ft (24.3 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,409 (2022)
Projected traffic4,400 by 2042
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 TH 71 built?

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

What condition is I 90 over TH 71 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 I 90 over TH 71 carry?

About 3,409 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is I 90 over TH 71?

The structure is 307 ft (93.6 m) long with a longest span of 80 ft (24.3 m) and a deck 45 ft wide.

Who owns I 90 over TH 71?

It is owned by the State Highway Agency.