US Bridges

US 75 over I 90

Fair

Rock County, Minnesota · At JCT TH 75 · Structure no. 67804

Built
1992
33 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
194 ft
2 main spans
Daily traffic
9,172
2019 count
Owner
State
State Highway Agency

About this bridge

US 75 over I 90 is a steel continuous stringer/multi-beam or girder carrying US 75 over I 90 in Rock County, Minnesota. It was built in 1992, so it is 33 years old, younger 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 9,172 vehicles a day, roughly 12% of them trucks, projected to reach 8,600 by 2039. The structure is 194 ft (59.2 m) long and 83 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 75
CrossesI 90
LocationAt JCT TH 75
RouteU.S. Route 75
Coordinates43.63955, -96.21314
Functional classRural Minor Arterial

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.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length194 ft (59.2 m)
Longest span95 ft (29 m)
Deck width83 ft (25.3 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,172 (2019)
Projected traffic8,600 by 2039
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 US 75 over I 90 built?

It was built in 1992, making it 33 years old in 2025.

What condition is US 75 over I 90 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 US 75 over I 90 carry?

About 9,172 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is US 75 over I 90?

The structure is 194 ft (59.2 m) long with a longest span of 95 ft (29 m) and a deck 83 ft wide.

Who owns US 75 over I 90?

It is owned by the State Highway Agency.