US Bridges

I 90 over Csah 11

Fair

Rock County, Minnesota · 3.2 MI W of JCT TH 75 · Structure no. 67802

Built
1964
61 years old, rebuilt 1988
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
118 ft
3 main spans
Daily traffic
5,250
2018 count
Owner
State
State Highway Agency

About this bridge

I 90 over Csah 11 is a steel continuous stringer/multi-beam or girder carrying I 90 over Csah 11 in Rock County, Minnesota. It was built in 1964 and reconstructed in 1988, so it is 61 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 5,250 vehicles a day, roughly 26% of them trucks, projected to reach 4,850 by 2038. The structure is 118 ft (36.1 m) long and 43 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesI 90
CrossesCsah 11
Location3.2 MI W of JCT TH 75
RouteInterstate 90
CountyRock County
StateMinnesota
Coordinates43.62754, -96.27309
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 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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length118 ft (36.1 m)
Longest span47 ft (14.3 m)
Deck width43 ft (13 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,250 (2018)
Projected traffic4,850 by 2038
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.7 mi (14 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 90 over Csah 11 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1988.

What condition is I 90 over Csah 11 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 90 over Csah 11 carry?

About 5,250 vehicles per day (2018 count), of which roughly 26% are trucks.

How long is I 90 over Csah 11?

The structure is 118 ft (36.1 m) long with a longest span of 47 ft (14.3 m) and a deck 43 ft wide.

Who owns I 90 over Csah 11?

It is owned by the State Highway Agency.