US Bridges

Msas 109 over I 494

Fair

Dakota County, Minnesota · 1.0 MI E of JCT TH 52 · Structure no. 19895

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
189 ft
2 main spans
Daily traffic
7,726
2021 count
Owner
State
State Highway Agency

About this bridge

Msas 109 over I 494 is a steel continuous stringer/multi-beam or girder carrying Msas 109 over I 494 in Dakota County, Minnesota. It was built in 1983, so it is 42 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 7,726 vehicles a day, projected to reach 9,600 by 2041. The structure is 189 ft (57.7 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMsas 109
CrossesI 494
Location1.0 MI E of JCT TH 52
RouteCity Street 109
CountyDakota County
StateMinnesota
Coordinates44.87445, -93.03992
Functional classUrban 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
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 inspectionSeptember 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 rating75.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length189 ft (57.7 m)
Longest span92 ft (28.1 m)
Deck width66 ft (20.2 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,726 (2021)
Projected traffic9,600 by 2041
Trucks—
Lanes on structure2
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 Msas 109 over I 494 built?

It was built in 1983, making it 42 years old in 2025.

What condition is Msas 109 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 September 2023.

How much traffic does Msas 109 over I 494 carry?

About 7,726 vehicles per day (2021 count).

How long is Msas 109 over I 494?

The structure is 189 ft (57.7 m) long with a longest span of 92 ft (28.1 m) and a deck 66 ft wide.

Who owns Msas 109 over I 494?

It is owned by the State Highway Agency.