State Road over Drain #473
GoodGratiot County, Michigan · Sec 30 Washington Twp · Structure no. 000000000003165
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 48 ft
- 1 main span
- Daily traffic
- 660
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
State Road over Drain #473 is a prestressed concrete box beam or girders - single or spread carrying State Road over Drain #473 in Gratiot County, Michigan. It was built in 2014, so it is 11 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 660 vehicles a day, roughly 5% of them trucks, projected to reach 890 by 2034. The structure is 48 ft (14.6 m) long and 37 ft wide. If it were closed, the detour would be 6.8 mi (11 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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| 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 State Road over Drain #473 built?
It was built in 2014, making it 11 years old in 2025.
What condition is State Road over Drain #473 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 June 2024.
How much traffic does State Road over Drain #473 carry?
About 660 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is State Road over Drain #473?
The structure is 48 ft (14.6 m) long with a longest span of 47 ft (14.2 m) and a deck 37 ft wide.
Who owns State Road over Drain #473?
It is owned by the County Highway Agency.