Griswold Road over Pine River
PoorPosted for loadSt. Clair County, Michigan · Sec. 7-18 Kimball Twp. · Structure no. 000000000010063
- Built
- 1990
- 35 years old
- Condition
- Poor
- inspected December 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 137 ft
- 1 main span
- Daily traffic
- 2,030
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Griswold Road over Pine River is a prestressed concrete tee beam carrying Griswold Road over Pine River in St. Clair County, Michigan. It was built in 1990, so it is 35 years old, younger than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 2,030 vehicles a day, roughly 6% of them trucks, projected to reach 2,475 by 2040. The structure is 137 ft (41.7 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Griswold Road over Pine River built?
It was built in 1990, making it 35 years old in 2025.
What condition is Griswold Road over Pine River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.
How much traffic does Griswold Road over Pine River carry?
About 2,030 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is Griswold Road over Pine River?
The structure is 137 ft (41.7 m) long with a longest span of 43 ft (13.2 m) and a deck 37 ft wide.
Who owns Griswold Road over Pine River?
It is owned by the County Highway Agency.