US Bridges

I 494 over TH 61 NB Off Ramp

Good

Washington County, Minnesota · At the JCT TH 494; 61 · Structure no. 82864

Built
2003
22 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
132 ft
1 main span
Daily traffic
35,406
2022 count
Owner
State
State Highway Agency

About this bridge

I 494 over TH 61 NB Off Ramp is a prestressed concrete stringer/multi-beam or girder carrying I 494 over TH 61 NB Off Ramp in Washington County, Minnesota. It was built in 2003, so it is 22 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 35,406 vehicles a day, roughly 17% of them trucks, projected to reach 43,500 by 2042. The structure is 132 ft (40.3 m) long and 66 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesI 494
CrossesTH 61 NB Off Ramp
LocationAt the JCT TH 494; 61
RouteInterstate 494
CountyWashington County
StateMinnesota
Coordinates44.88749, -93.00234
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating51 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length132 ft (40.3 m)
Longest span128 ft (39 m)
Deck width66 ft (20.1 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,406 (2022)
Projected traffic43,500 by 2042
Trucks17%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.8 mi (11 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 494 over TH 61 NB Off Ramp built?

It was built in 2003, making it 22 years old in 2025.

What condition is I 494 over TH 61 NB Off Ramp 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 September 2023.

How much traffic does I 494 over TH 61 NB Off Ramp carry?

About 35,406 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is I 494 over TH 61 NB Off Ramp?

The structure is 132 ft (40.3 m) long with a longest span of 128 ft (39 m) and a deck 66 ft wide.

Who owns I 494 over TH 61 NB Off Ramp?

It is owned by the State Highway Agency.