US Bridges

M-6 EB over 48th Street

Fair

Kent County, Michigan · Cascade Twp Sec 28 · Structure no. 000000000012928

Built
2000
25 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
152 ft
2 main spans
Daily traffic
13,761
2007 count
Owner
State
State Highway Agency

About this bridge

M-6 EB over 48th Street is a prestressed concrete stringer/multi-beam or girder carrying M-6 EB over 48th Street in Kent County, Michigan. It was built in 2000, so it is 25 years old, younger 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 6 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 13,761 vehicles a day, roughly 13% of them trucks, projected to reach 9,082 by 2018. The structure is 152 ft (46.4 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesM-6 EB
Crosses48th Street
LocationCascade Twp Sec 28
RouteState Highway 6
CountyKent County
StateMichigan
Coordinates42.8771, -85.49046
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.2 US tons
Inventory rating49.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length152 ft (46.4 m)
Longest span104 ft (31.8 m)
Deck width62 ft (19 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,761 (2007)
Projected traffic9,082 by 2018
Trucks13%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-6 EB over 48th Street built?

It was built in 2000, making it 25 years old in 2025.

What condition is M-6 EB over 48th Street 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 May 2023.

How much traffic does M-6 EB over 48th Street carry?

About 13,761 vehicles per day (2007 count), of which roughly 13% are trucks.

How long is M-6 EB over 48th Street?

The structure is 152 ft (46.4 m) long with a longest span of 104 ft (31.8 m) and a deck 62 ft wide.

Who owns M-6 EB over 48th Street?

It is owned by the State Highway Agency.