Black Quarter TR 1 over Silver CR
PoorSt. Clair County, Illinois · 1.0 MI N Ill 13 · Structure no. 082407600000000
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected March 2023
- Type
- Channel Beam
- Concrete
- Length
- 152 ft
- 5 main spans
- Daily traffic
- 50
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Black Quarter TR 1 over Silver CR is a concrete channel beam carrying Black Quarter TR 1 over Silver CR in St. Clair County, Illinois. It was built in 1961, so it is 64 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 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.
It carries about 50 vehicles a day, roughly 14% of them trucks, projected to reach 76 by 2046. The structure is 152 ft (46.3 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| 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 Black Quarter TR 1 over Silver CR built?
It was built in 1961, making it 64 years old in 2025.
What condition is Black Quarter TR 1 over Silver CR 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 March 2023.
How much traffic does Black Quarter TR 1 over Silver CR carry?
About 50 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is Black Quarter TR 1 over Silver CR?
The structure is 152 ft (46.3 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.
Who owns Black Quarter TR 1 over Silver CR?
It is owned by the Town or Township Highway Agency.