US Bridges

M-6 WB over Norfolk Southern RR

Good

Kent County, Michigan · Byron Twp Sec 1 · Structure no. 000000000012904

Built
2000
25 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
26,271
2007 count
Owner
State
State Highway Agency

About this bridge

M-6 WB over Norfolk Southern RR is a prestressed concrete stringer/multi-beam or girder carrying M-6 WB over Norfolk Southern RR 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 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 26,271 vehicles a day, roughly 3% of them trucks, projected to reach 20,200 by 2025. The structure is 72 ft (22 m) long and 47 ft wide.

CarriesM-6 WB
CrossesNorfolk Southern RR
LocationByron Twp Sec 1
RouteState Highway 6
Coordinates42.84894, -85.67377
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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.3 US tons
Inventory rating47.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (22 m)
Longest span72 ft (22 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,271 (2007)
Projected traffic20,200 by 2025
Trucks3%
Lanes on structure2
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 Norfolk Southern RR built?

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

What condition is M-6 WB over Norfolk Southern 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 September 2024.

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

About 26,271 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is M-6 WB over Norfolk Southern RR?

The structure is 72 ft (22 m) long with a longest span of 72 ft (22 m) and a deck 47 ft wide.

Who owns M-6 WB over Norfolk Southern RR?

It is owned by the State Highway Agency.