M-121 WB over Macatawa River
GoodOttawa County, Michigan · Zeeland Twp Sec 10 · Structure no. 000000000008711
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 66 ft
- 1 main span
- Daily traffic
- 4,668
- 2007 count
- Owner
- State
- State Highway Agency
About this bridge
M-121 WB over Macatawa River is a prestressed concrete box beam or girders - single or spread carrying M-121 WB over Macatawa River in Ottawa County, Michigan. It was built in 2004, so it is 21 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 4,668 vehicles a day, roughly 10% of them trucks, projected to reach 8,003 by 2018. The structure is 66 ft (20.1 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was M-121 WB over Macatawa River built?
It was built in 2004, making it 21 years old in 2025.
What condition is M-121 WB over 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 April 2024.
How much traffic does M-121 WB over Macatawa River carry?
About 4,668 vehicles per day (2007 count), of which roughly 10% are trucks.
How long is M-121 WB over Macatawa River?
The structure is 66 ft (20.1 m) long with a longest span of 61 ft (18.6 m) and a deck 47 ft wide.
Who owns M-121 WB over Macatawa River?
It is owned by the State Highway Agency.