Jankowski Rd/ TR85 over Slough Creek
GoodMcHenry County, Illinois · 0.7M W IL47 · Structure no. 056311600000000
- Built
- 1975
- 50 years old, rebuilt 2012
- Condition
- Good
- inspected October 2022
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 52 ft
- 1 main span
- Daily traffic
- 175
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Jankowski Rd/ TR85 over Slough Creek is a prestressed concrete box beam or girders - multiple carrying Jankowski Rd/ TR85 over Slough Creek in McHenry County, Illinois. It was built in 1975 and reconstructed in 2012, so it is 50 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 175 vehicles a day, roughly 9% of them trucks, projected to reach 210 by 2046. The structure is 52 ft (15.7 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Jankowski Rd/ TR85 over Slough Creek built?
It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2012.
What condition is Jankowski Rd/ TR85 over Slough Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2022.
How much traffic does Jankowski Rd/ TR85 over Slough Creek carry?
About 175 vehicles per day (2021 count), of which roughly 9% are trucks.
How long is Jankowski Rd/ TR85 over Slough Creek?
The structure is 52 ft (15.7 m) long with a longest span of 48 ft (14.7 m) and a deck 27 ft wide.
Who owns Jankowski Rd/ TR85 over Slough Creek?
It is owned by the Town or Township Highway Agency.