US Bridges

M-40 over N Br Macatawa River

Good

Allegan County, Michigan · 2.4 MI SE of Ottawa Col · Structure no. 000000000000140

Built
1999
26 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
6,433
2007 count
Owner
State
State Highway Agency

About this bridge

M-40 over N Br Macatawa River is a prestressed concrete box beam or girders - single or spread carrying M-40 over N Br Macatawa River in Allegan 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 6,433 vehicles a day, roughly 24% of them trucks, projected to reach 9,422 by 2018. The structure is 54 ft (16.6 m) long and 82 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesM-40
CrossesN Br Macatawa River
Location2.4 MI SE of Ottawa Col
RouteState Highway 40
CountyAllegan County
StateMichigan
Coordinates42.74711, -86.07504
Functional classUrban Other Principal Arterial

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length54 ft (16.6 m)
Longest span52 ft (16 m)
Deck width82 ft (25 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,433 (2007)
Projected traffic9,422 by 2018
Trucks24%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-40 over N Br Macatawa River built?

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

What condition is M-40 over N Br Macatawa River 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-40 over N Br Macatawa River carry?

About 6,433 vehicles per day (2007 count), of which roughly 24% are trucks.

How long is M-40 over N Br Macatawa River?

The structure is 54 ft (16.6 m) long with a longest span of 52 ft (16 m) and a deck 82 ft wide.

Who owns M-40 over N Br Macatawa River?

It is owned by the State Highway Agency.