Il 173 over Boat Channel
Good Condition95 years old11,200 vehicles/day
Location
| State | Illinois |
| County | Lake |
| Location | 2.5 M W Of Il 59 |
| Carries | Il 173 |
| Crosses | Boat Channel |
| Coordinates | 42.47191, -88.14693 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 44.6 ft (13.6 m) |
| Deck Area | 133.3 sq m |
| Main Spans | 1 |
| Year Built | 1931 (reconstructed 2011) |
Traffic
| Avg Daily Traffic | 11,200 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 921 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 049005500000000 |