US Bridges

M-66 over Quaker Brook

Good

Barry County, Michigan · In Village of Nashville · Structure no. 000000000000544

Built
2019
6 years old
Condition
Good
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
6,083
2015 count
Owner
State
State Highway Agency

About this bridge

M-66 over Quaker Brook is a steel stringer/multi-beam or girder carrying M-66 over Quaker Brook in Barry County, Michigan. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,083 vehicles a day, roughly 9% of them trucks, projected to reach 6,995 by 2035. The structure is 45 ft (13.7 m) long and 51 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesM-66
CrossesQuaker Brook
LocationIn Village of Nashville
RouteState Highway 66
CountyBarry County
StateMichigan
Coordinates42.60018, -85.09366
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating87.5 US tons
Inventory rating67.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length45 ft (13.7 m)
Longest span43 ft (13.2 m)
Deck width51 ft (15.5 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,083 (2015)
Projected traffic6,995 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-66 over Quaker Brook built?

It was built in 2019, making it 6 years old in 2025.

What condition is M-66 over Quaker Brook 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 March 2025.

How much traffic does M-66 over Quaker Brook carry?

About 6,083 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is M-66 over Quaker Brook?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.2 m) and a deck 51 ft wide.

Who owns M-66 over Quaker Brook?

It is owned by the State Highway Agency.