US Bridges

I 90 over TH 74

Fair

Winona County, Minnesota · At JCT TH 74 · Structure no. 85817

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
227 ft
3 main spans
Daily traffic
7,900
2017 count
Owner
State
State Highway Agency

About this bridge

I 90 over TH 74 is a steel continuous stringer/multi-beam or girder carrying I 90 over TH 74 in Winona County, Minnesota. It was built in 1969, so it is 56 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 6 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 7,900 vehicles a day, roughly 23% of them trucks, projected to reach 7,900 by 2039. The structure is 227 ft (69.3 m) long and 45 ft wide.

CarriesI 90
CrossesTH 74
LocationAt JCT TH 74
RouteInterstate 90
Coordinates43.95246, -92.06545
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length227 ft (69.3 m)
Longest span88 ft (26.7 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,900 (2017)
Projected traffic7,900 by 2039
Trucks23%
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 74 built?

It was built in 1969, making it 56 years old in 2025.

What condition is I 90 over TH 74 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 October 2024.

How much traffic does I 90 over TH 74 carry?

About 7,900 vehicles per day (2017 count), of which roughly 23% are trucks.

How long is I 90 over TH 74?

The structure is 227 ft (69.3 m) long with a longest span of 88 ft (26.7 m) and a deck 45 ft wide.

Who owns I 90 over TH 74?

It is owned by the State Highway Agency.