US Bridges

Con 3987 over Lyndale Ave; Ramp

Fair

Hennepin County, Minnesota · At JCT Lyndale Ave; I 94 · Structure no. 27965

Built
1965
60 years old, rebuilt 1989
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
290 ft
5 main spans
Daily traffic
9,177
2022 count
Owner
State
State Highway Agency

About this bridge

Con 3987 over Lyndale Ave; Ramp is a prestressed concrete stringer/multi-beam or girder carrying Con 3987 over Lyndale Ave; Ramp in Hennepin County, Minnesota. It was built in 1965 and reconstructed in 1989, so it is 60 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 9,177 vehicles a day, projected to reach 10,250 by 2042. The structure is 290 ft (88.5 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCon 3987
CrossesLyndale Ave; Ramp
LocationAt JCT Lyndale Ave; I 94
RouteInterstate 3987
CountyHennepin County
StateMinnesota
Coordinates44.96432, -93.28838
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.2 US tons
Inventory rating45.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length290 ft (88.5 m)
Longest span83 ft (25.2 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,177 (2022)
Projected traffic10,250 by 2042
Trucks—
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$1,000 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Con 3987 over Lyndale Ave; Ramp built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1989.

What condition is Con 3987 over Lyndale Ave; Ramp 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 2024.

How much traffic does Con 3987 over Lyndale Ave; Ramp carry?

About 9,177 vehicles per day (2022 count).

How long is Con 3987 over Lyndale Ave; Ramp?

The structure is 290 ft (88.5 m) long with a longest span of 83 ft (25.2 m) and a deck 32 ft wide.

Who owns Con 3987 over Lyndale Ave; Ramp?

It is owned by the State Highway Agency.