North RD TR-11 over Collins Run
PoorGrundy County, Illinois · .15 MI E Brisbin RD · Structure no. 032391600000000
- Built
- 1976
- 49 years old
- Condition
- Poor
- inspected July 2023
- Type
- Channel Beam
- Concrete
- Length
- 98 ft
- 3 main spans
- Daily traffic
- 350
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
North RD TR-11 over Collins Run is a concrete channel beam carrying North RD TR-11 over Collins Run in Grundy County, Illinois. It was built in 1976, so it is 49 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 350 vehicles a day, roughly 9% of them trucks, projected to reach 450 by 2046. The structure is 98 ft (29.9 m) long and 26 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 | 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North RD TR-11 over Collins Run built?
It was built in 1976, making it 49 years old in 2025.
What condition is North RD TR-11 over Collins Run 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 July 2023.
How much traffic does North RD TR-11 over Collins Run carry?
About 350 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is North RD TR-11 over Collins Run?
The structure is 98 ft (29.9 m) long with a longest span of 32 ft (9.8 m) and a deck 26 ft wide.
Who owns North RD TR-11 over Collins Run?
It is owned by the Town or Township Highway Agency.