US Bridges

Mn 77 over UP RR

Fair

Dakota County, Minnesota · 0.3 MI N of JCT TH 13 · Structure no. 19014

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
217 ft
2 main spans
Daily traffic
45,951
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 77 over UP RR is a prestressed concrete stringer/multi-beam or girder carrying Mn 77 over UP RR in Dakota County, Minnesota. It was built in 1978, so it is 47 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 45,951 vehicles a day, roughly 7% of them trucks, projected to reach 47,500 by 2042. The structure is 217 ft (66.2 m) long and 69 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesMn 77
CrossesUP RR
Location0.3 MI N of JCT TH 13
RouteState Highway 77
CountyDakota County
StateMinnesota
Coordinates44.81996, -93.2238
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
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 rating28.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length217 ft (66.2 m)
Longest span106 ft (32.2 m)
Deck width69 ft (21.1 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,951 (2022)
Projected traffic47,500 by 2042
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemYes

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$864 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 77 over UP RR built?

It was built in 1978, making it 47 years old in 2025.

What condition is Mn 77 over UP RR 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 July 2024.

How much traffic does Mn 77 over UP RR carry?

About 45,951 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Mn 77 over UP RR?

The structure is 217 ft (66.2 m) long with a longest span of 106 ft (32.2 m) and a deck 69 ft wide.

Who owns Mn 77 over UP RR?

It is owned by the State Highway Agency.