US Bridges

Csah 23 over I 90

Fair

Jackson County, Minnesota · 1.0 MI E of JCT TH 71 · Structure no. 32810

Built
1971
54 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
306 ft
4 main spans
Daily traffic
1,339
2021 count
Owner
State
State Highway Agency

About this bridge

Csah 23 over I 90 is a prestressed concrete stringer/multi-beam or girder carrying Csah 23 over I 90 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 1,339 vehicles a day, projected to reach 1,500 by 2041. The structure is 306 ft (93.4 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesCsah 23
CrossesI 90
Location1.0 MI E of JCT TH 71
RouteCounty Highway 23
CountyJackson County
StateMinnesota
Coordinates43.64216, -94.97444
Functional classRural Major Collector

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 inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.3 US tons
Inventory rating26.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length306 ft (93.4 m)
Longest span86 ft (26.1 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,339 (2021)
Projected traffic1,500 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Csah 23 over I 90 built?

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

What condition is Csah 23 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 May 2023.

How much traffic does Csah 23 over I 90 carry?

About 1,339 vehicles per day (2021 count).

How long is Csah 23 over I 90?

The structure is 306 ft (93.4 m) long with a longest span of 86 ft (26.1 m) and a deck 36 ft wide.

Who owns Csah 23 over I 90?

It is owned by the State Highway Agency.