TR 166 over Coop Br
PoorPosted for loadMacoupin County, Illinois · 2 MI N .5 MI E Shipm · Structure no. 059310900000000
- Built
- 1917
- 108 years old
- Condition
- Poor
- inspected February 2023
- Type
- Truss - Thru
- Steel
- Length
- 73 ft
- 1 main span
- Daily traffic
- 100
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 166 over Coop Br is a steel truss - thru carrying TR 166 over Coop Br in Macoupin County, Illinois. It was built in 1917, so it is 108 years old, older than the Illinois average of 45.3 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 100 vehicles a day, roughly 7% of them trucks, projected to reach 101 by 2046. The structure is 73 ft (22.3 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 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 TR 166 over Coop Br built?
It was built in 1917, making it 108 years old in 2025.
What condition is TR 166 over Coop Br 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 February 2023.
How much traffic does TR 166 over Coop Br carry?
About 100 vehicles per day (2021 count), of which roughly 7% are trucks.
How long is TR 166 over Coop Br?
The structure is 73 ft (22.3 m) long with a longest span of 69 ft (21 m) and a deck 18 ft wide.
Who owns TR 166 over Coop Br?
It is owned by the Town or Township Highway Agency.