US Bridges

M-6 WB over CSX RR

Good

Kent County, Michigan · Cascade Twp Sec 28 · Structure no. 000000000012813

Built
1999
26 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
175 ft
3 main spans
Daily traffic
6,929
2023 count
Owner
State
State Highway Agency

About this bridge

M-6 WB over CSX RR is a prestressed concrete stringer/multi-beam or girder carrying M-6 WB over CSX RR 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 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 6,929 vehicles a day, roughly 13% of them trucks. The structure is 175 ft (53.2 m) long and 62 ft wide.

CarriesM-6 WB
CrossesCSX RR
LocationCascade Twp Sec 28
RouteState Highway 6
Coordinates42.88252, -85.49165
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length175 ft (53.2 m)
Longest span63 ft (19.2 m)
Deck width62 ft (19 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,929 (2023)
Projected traffic—
Trucks13%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 WB over CSX RR built?

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

What condition is M-6 WB over CSX RR 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 November 2024.

How much traffic does M-6 WB over CSX RR carry?

About 6,929 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is M-6 WB over CSX RR?

The structure is 175 ft (53.2 m) long with a longest span of 63 ft (19.2 m) and a deck 62 ft wide.

Who owns M-6 WB over CSX RR?

It is owned by the State Highway Agency.