US Bridges

Larned ST Ramp over M-10 NB

Fair

Wayne County, Michigan · In Detroit · Structure no. 000000000011396

Built
1959
66 years old, rebuilt 1987
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
102 ft
1 main span
Daily traffic
7,626
2010 count
Owner
State
State Highway Agency

About this bridge

Larned ST Ramp over M-10 NB is a prestressed concrete slab carrying Larned ST Ramp over M-10 NB in Wayne County, Michigan. It was built in 1959 and reconstructed in 1987, so it is 66 years old, older than the Michigan average of 48.3 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 7,626 vehicles a day, projected to reach 8,389 by 2025. The structure is 102 ft (31.1 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesLarned ST Ramp
CrossesM-10 NB
LocationIn Detroit
RouteState Highway 10
CountyWayne County
StateMichigan
Coordinates42.32644, -83.05197
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating72.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length102 ft (31.1 m)
Longest span102 ft (31.1 m)
Deck width41 ft (12.4 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,626 (2010)
Projected traffic8,389 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Larned ST Ramp over M-10 NB built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 1987.

What condition is Larned ST Ramp over M-10 NB 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 June 2024.

How much traffic does Larned ST Ramp over M-10 NB carry?

About 7,626 vehicles per day (2010 count).

How long is Larned ST Ramp over M-10 NB?

The structure is 102 ft (31.1 m) long with a longest span of 102 ft (31.1 m) and a deck 41 ft wide.

Who owns Larned ST Ramp over M-10 NB?

It is owned by the State Highway Agency.