US Bridges

I 90 over TH 74

Fair

Winona County, Minnesota · At JCT TH 74 · Structure no. 85818

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
8,233
2022 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 8,233 vehicles a day, roughly 36% of them trucks, projected to reach 7,900 by 2042. The structure is 227 ft (69.3 m) long and 45 ft wide.

CarriesI 90
CrossesTH 74
LocationAt JCT TH 74
RouteInterstate 90
Coordinates43.95223, -92.06541
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 traffic8,233 (2022)
Projected traffic7,900 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 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 8,233 vehicles per day (2022 count), of which roughly 36% 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.