US Bridges

Csah 46 over I 90

Good

Mower County, Minnesota · 0.5 MI E of E JCT US 218 · Structure no. 50811

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
175 ft
2 main spans
Daily traffic
1,050
2019 count
Owner
State
State Highway Agency

About this bridge

Csah 46 over I 90 is a prestressed concrete stringer/multi-beam or girder carrying Csah 46 over I 90 in Mower County, Minnesota. It was built in 2021, so it is 4 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,050 vehicles a day, projected to reach 565 by 2039. The structure is 175 ft (53.3 m) long and 47 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 46
CrossesI 90
Location0.5 MI E of E JCT US 218
RouteCounty Highway 46
CountyMower County
StateMinnesota
Coordinates43.67394, -92.92995
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length175 ft (53.3 m)
Longest span86 ft (26.1 m)
Deck width47 ft (14.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2019)
Projected traffic565 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Csah 46 over I 90 built?

It was built in 2021, making it 4 years old in 2025.

What condition is Csah 46 over I 90 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Csah 46 over I 90 carry?

About 1,050 vehicles per day (2019 count).

How long is Csah 46 over I 90?

The structure is 175 ft (53.3 m) long with a longest span of 86 ft (26.1 m) and a deck 47 ft wide.

Who owns Csah 46 over I 90?

It is owned by the State Highway Agency.