Keystone Avenue over Natalie Creek
Good Condition15 years old350 vehicles/day
Location
| State | Illinois |
| County | Cook |
| Location | 0.12 Mi N 147th ST |
| Carries | Keystone Avenue |
| Crosses | Natalie Creek |
| Coordinates | 41.62743, -87.71899 |
Condition Ratings
| Overall Condition | Good |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 65.0 ft (19.8 m) |
| Deck Area | 194.0 sq m |
| Main Spans | 1 |
| Year Built | 2011 |
Traffic
| Avg Daily Traffic | 350 (2022) |
| Truck Traffic | 19% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2021 |
| Inspection Frequency | Every 48 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 016764700000000 |