County RD 550 over Yellow Dog River
GoodMarquette County, Michigan · At Antlers · Structure no. 000000000006562
- Built
- 2014
- 11 years old
- Condition
- Good
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 60 ft
- 1 main span
- Daily traffic
- 1,400
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
County RD 550 over Yellow Dog River is a prestressed concrete box beam or girders - multiple carrying County RD 550 over Yellow Dog River in Marquette 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 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 1,400 vehicles a day, roughly 11% of them trucks, projected to reach 1,450 by 2033. The structure is 60 ft (18.3 m) long and 44 ft wide. If it were closed, the detour would be 29.8 mi (48 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County RD 550 over Yellow Dog River built?
It was built in 2014, making it 11 years old in 2025.
What condition is County RD 550 over Yellow Dog 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 October 2024.
How much traffic does County RD 550 over Yellow Dog River carry?
About 1,400 vehicles per day (2013 count), of which roughly 11% are trucks.
How long is County RD 550 over Yellow Dog River?
The structure is 60 ft (18.3 m) long with a longest span of 59 ft (17.9 m) and a deck 44 ft wide.
Who owns County RD 550 over Yellow Dog River?
It is owned by the County Highway Agency.