US Bridges

Unu 52 over I 94 Ramp; Plymouth Ave

Fair

Hennepin County, Minnesota · 1.3 MI N of JCT TH 394 · Structure no. 27781

Built
1980
45 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,008 ft
6 main spans
Daily traffic
4,100
2017 count
Owner
State
State Highway Agency

About this bridge

Unu 52 over I 94 Ramp; Plymouth Ave is a steel continuous stringer/multi-beam or girder carrying Unu 52 over I 94 Ramp; Plymouth Ave in Hennepin County, Minnesota. It was built in 1980, so it is 45 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 4,100 vehicles a day, roughly 4% of them trucks, projected to reach 4,100 by 2039. The structure is 1,008 ft (307.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUnu 52
CrossesI 94 Ramp; Plymouth Ave
Location1.3 MI N of JCT TH 394
RouteU.S. Route 52
CountyHennepin County
StateMinnesota
Coordinates44.99197, -93.28494
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83 US tons
Inventory rating49.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length1,008 ft (307.2 m)
Longest span221 ft (67.4 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2017)
Projected traffic4,100 by 2039
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
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 Unu 52 over I 94 Ramp; Plymouth Ave built?

It was built in 1980, making it 45 years old in 2025.

What condition is Unu 52 over I 94 Ramp; Plymouth Ave 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 Unu 52 over I 94 Ramp; Plymouth Ave carry?

About 4,100 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Unu 52 over I 94 Ramp; Plymouth Ave?

The structure is 1,008 ft (307.2 m) long with a longest span of 221 ft (67.4 m) and a deck 43 ft wide.

Who owns Unu 52 over I 94 Ramp; Plymouth Ave?

It is owned by the State Highway Agency.