US Bridges

M-6 EB over M-37

Good

Kent County, Michigan · Caledonia Twp Sec 6 · Structure no. 000000000012741

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
263 ft
2 main spans
Daily traffic
20,090
2007 count
Owner
State
State Highway Agency

About this bridge

M-6 EB over M-37 is a prestressed concrete stringer/multi-beam or girder carrying M-6 EB over M-37 in Kent County, Michigan. It was built in 1997, so it is 28 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,090 vehicles a day, roughly 13% of them trucks, projected to reach 9,082 by 2018. The structure is 263 ft (80.2 m) long and 61 ft wide.

Location

Open in Google Maps
CarriesM-6 EB
CrossesM-37
LocationCaledonia Twp Sec 6
RouteState Highway 6
CountyKent County
StateMichigan
Coordinates42.85086, -85.53889
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 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 alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length263 ft (80.2 m)
Longest span132 ft (40.1 m)
Deck width61 ft (18.6 m)
Roadway width58 ft (17.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,090 (2007)
Projected traffic9,082 by 2018
Trucks13%
Lanes on structure3
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 M-6 EB over M-37 built?

It was built in 1997, making it 28 years old in 2025.

What condition is M-6 EB over M-37 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does M-6 EB over M-37 carry?

About 20,090 vehicles per day (2007 count), of which roughly 13% are trucks.

How long is M-6 EB over M-37?

The structure is 263 ft (80.2 m) long with a longest span of 132 ft (40.1 m) and a deck 61 ft wide.

Who owns M-6 EB over M-37?

It is owned by the State Highway Agency.