17th Av over Silver Creek
PoorCook County, Illinois · 100 S IL-64 · Structure no. 016747600000000
- Built
- 1949
- 76 years old
- Condition
- Poor
- inspected December 2023
- Type
- Slab
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 750
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
17th Av over Silver Creek is a concrete slab carrying 17th Av over Silver Creek in Cook County, Illinois. It was built in 1949, so it is 76 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 2 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 750 vehicles a day, roughly 8% of them trucks, projected to reach 505 by 2046. The structure is 36 ft (11 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Superstructure | 2 Critical | Advanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken. |
| Substructure | 7 Good | Some minor problems. |
| 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 17th Av over Silver Creek built?
It was built in 1949, making it 76 years old in 2025.
What condition is 17th Av over Silver 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 December 2023.
How much traffic does 17th Av over Silver Creek carry?
About 750 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is 17th Av over Silver Creek?
The structure is 36 ft (11 m) long with a longest span of 36 ft (11 m) and a deck 59 ft wide.
Who owns 17th Av over Silver Creek?
It is owned by the City or Municipal Highway Agency.