US Bridges

Mn 149 over I 494

Fair

Dakota County, Minnesota · 0.8 MI E of JCT TH 35E · Structure no. 19857

Built
1984
41 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
314 ft
2 main spans
Daily traffic
22,900
2015 count
Owner
State
State Highway Agency

About this bridge

Mn 149 over I 494 is a steel continuous stringer/multi-beam or girder carrying Mn 149 over I 494 in Dakota County, Minnesota. It was built in 1984, so it is 41 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 22,900 vehicles a day, roughly 2% of them trucks, projected to reach 22,900 by 2035. The structure is 314 ft (95.7 m) long and 103 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMn 149
CrossesI 494
Location0.8 MI E of JCT TH 35E
RouteState Highway 149
CountyDakota County
StateMinnesota
Coordinates44.8627, -93.12956
Functional classUrban Minor Arterial

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.
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 inspectionOctober 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length314 ft (95.7 m)
Longest span155 ft (47.2 m)
Deck width103 ft (31.3 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,900 (2015)
Projected traffic22,900 by 2035
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
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 Mn 149 over I 494 built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mn 149 over I 494 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 October 2023.

How much traffic does Mn 149 over I 494 carry?

About 22,900 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Mn 149 over I 494?

The structure is 314 ft (95.7 m) long with a longest span of 155 ft (47.2 m) and a deck 103 ft wide.

Who owns Mn 149 over I 494?

It is owned by the State Highway Agency.