US Bridges

Csah 34 over I 90

Fair

Jackson County, Minnesota · 1.9 MI E of JCT TH 71 · Structure no. 32813

Built
1974
51 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
428 ft
4 main spans
Daily traffic
1,318
2021 count
Owner
State
State Highway Agency

About this bridge

Csah 34 over I 90 is a steel continuous stringer/multi-beam or girder carrying Csah 34 over I 90 in Jackson County, Minnesota. It was built in 1974, so it is 51 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 1,318 vehicles a day, projected to reach 1,500 by 2041. The structure is 428 ft (130.6 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesCsah 34
CrossesI 90
Location1.9 MI E of JCT TH 71
RouteCounty Highway 34
CountyJackson County
StateMinnesota
Coordinates43.64553, -94.95821
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry7: Better than 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 spans4
Design loadHS 20
Structure length428 ft (130.6 m)
Longest span120 ft (36.5 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,318 (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 34 over I 90 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Csah 34 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 Csah 34 over I 90 carry?

About 1,318 vehicles per day (2021 count).

How long is Csah 34 over I 90?

The structure is 428 ft (130.6 m) long with a longest span of 120 ft (36.5 m) and a deck 44 ft wide.

Who owns Csah 34 over I 90?

It is owned by the State Highway Agency.