Frith Road over Smiths Creek
FairSt. Clair County, Michigan · Sec. 5-8 St. Clair Twp · Structure no. 000000000010224
- Built
- 1934
- 91 years old, rebuilt 1970
- Condition
- Fair
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 454
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Frith Road over Smiths Creek is a prestressed concrete box beam or girders - multiple carrying Frith Road over Smiths Creek in St. Clair County, Michigan. It was built in 1934 and reconstructed in 1970, so it is 91 years old, older than the Michigan average of 48.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 454 vehicles a day, roughly 12% of them trucks, projected to reach 820 by 2035. The structure is 26 ft (7.9 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Frith Road over Smiths Creek built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1970.
What condition is Frith Road over Smiths Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.
How much traffic does Frith Road over Smiths Creek carry?
About 454 vehicles per day (2015 count), of which roughly 12% are trucks.
How long is Frith Road over Smiths Creek?
The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 18 ft wide.
Who owns Frith Road over Smiths Creek?
It is owned by the County Highway Agency.