US Bridges

60th Street over M-6

Fair

Kent County, Michigan · Cascade Twp Sec 32 · Structure no. 000000000012815

Built
1999
26 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
351 ft
2 main spans
Daily traffic
13,100
1999 count
Owner
State
State Highway Agency

About this bridge

60th Street over M-6 is a steel continuous stringer/multi-beam or girder carrying 60th Street over M-6 in Kent County, Michigan. It was built in 1999, so it is 26 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 13,100 vehicles a day, roughly 3% of them trucks, projected to reach 13,100 by 2015. The structure is 351 ft (107 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries60th Street
CrossesM-6
LocationCascade Twp Sec 32
RouteCity Street 0
Coordinates42.8566, -85.50998
Functional classUrban Collector

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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.3 US tons
Inventory rating50.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length351 ft (107 m)
Longest span176 ft (53.5 m)
Deck width51 ft (15.4 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,100 (1999)
Projected traffic13,100 by 2015
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 60th Street over M-6 built?

It was built in 1999, making it 26 years old in 2025.

What condition is 60th Street over M-6 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 60th Street over M-6 carry?

About 13,100 vehicles per day (1999 count), of which roughly 3% are trucks.

How long is 60th Street over M-6?

The structure is 351 ft (107 m) long with a longest span of 176 ft (53.5 m) and a deck 51 ft wide.

Who owns 60th Street over M-6?

It is owned by the State Highway Agency.