Treat HWY over Black Creek
PoorPosted for loadLenawee County, Michigan · 0.4 MI S of Horton RD · Structure no. 000000000005674
- Built
- 1970
- 55 years old, rebuilt 1997
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 92 ft
- 3 main spans
- Daily traffic
- 755
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
Treat HWY over Black Creek is a steel continuous stringer/multi-beam or girder carrying Treat HWY over Black Creek in Lenawee County, Michigan. It was built in 1970 and reconstructed in 1997, so it is 55 years old, older 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 3 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 755 vehicles a day, roughly 1% of them trucks, projected to reach 1,000 by 2031. The structure is 92 ft (28 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Treat HWY over Black Creek built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1997.
What condition is Treat HWY over Black Creek 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 November 2024.
How much traffic does Treat HWY over Black Creek carry?
About 755 vehicles per day (2012 count), of which roughly 1% are trucks.
How long is Treat HWY over Black Creek?
The structure is 92 ft (28 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.
Who owns Treat HWY over Black Creek?
It is owned by the County Highway Agency.