US Bridges

M-231 over Grand River

Good

Ottawa County, Michigan · 4.5 MI N of M-45 · Structure no. 000000000013460

Built
2013
12 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,709 ft
4 main spans
Daily traffic
18,700
2010 count
Owner
State
State Highway Agency

About this bridge

M-231 over Grand River is a steel continuous stringer/multi-beam or girder carrying M-231 over Grand River in Ottawa County, Michigan. It was built in 2013, so it is 12 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 18,700 vehicles a day, projected to reach 22,000 by 2030. The structure is 3,709 ft (1,130.4 m) long and 66 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-231
CrossesGrand River
Location4.5 MI N of M-45
RouteState Highway 231
CountyOttawa County
StateMichigan
Coordinates43.04017, -86.09116
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionJuly 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 geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating85 US tons
Inventory rating63.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+12 approach)
Design loadGreater than HL 93
Structure length3,709 ft (1,130.4 m)
Longest span330 ft (100.6 m)
Deck width66 ft (20.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,700 (2010)
Projected traffic22,000 by 2030
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was M-231 over Grand River built?

It was built in 2013, making it 12 years old in 2025.

What condition is M-231 over Grand 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 July 2023.

How much traffic does M-231 over Grand River carry?

About 18,700 vehicles per day (2010 count).

How long is M-231 over Grand River?

The structure is 3,709 ft (1,130.4 m) long with a longest span of 330 ft (100.6 m) and a deck 66 ft wide.

Who owns M-231 over Grand River?

It is owned by the State Highway Agency.