Tyrrell RD over Lookingglass River
GoodShiawassee County, Michigan · 3.7 MI W of Bancroft · Structure no. 000000000009863
- Built
- 1961
- 64 years old
- Condition
- Good
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 170
- 1998 count
- Owner
- County
- County Highway Agency
About this bridge
Tyrrell RD over Lookingglass River is a prestressed concrete box beam or girders - multiple carrying Tyrrell RD over Lookingglass River in Shiawassee County, Michigan. It was built in 1961, so it is 64 years old, older 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 170 vehicles a day, roughly 5% of them trucks, projected to reach 310 by 2018. The structure is 50 ft (15.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Tyrrell RD over Lookingglass River built?
It was built in 1961, making it 64 years old in 2025.
What condition is Tyrrell RD over Lookingglass 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 Tyrrell RD over Lookingglass River carry?
About 170 vehicles per day (1998 count), of which roughly 5% are trucks.
How long is Tyrrell RD over Lookingglass River?
The structure is 50 ft (15.2 m) long with a longest span of 46 ft (14 m) and a deck 31 ft wide.
Who owns Tyrrell RD over Lookingglass River?
It is owned by the County Highway Agency.