Il 171 NB First Av over S&s Canal

Fair Condition63 years old39,600 vehicles/day

Location

StateIllinois
CountyCook
Location0.2 M SE I-55
CarriesIl 171 NB First Av
CrossesS&s Canal
Coordinates41.79262, -87.81884

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure5 (Fair)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical8 — Stable, low risk

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length794.6 ft (242.2 m)
Max Span173.6 ft (52.9 m)
Deck Width43.3 ft (13.2 m)
Deck Area3197.0 sq m
Main Spans11
Year Built1963 (reconstructed 2016)

Traffic

Avg Daily Traffic39,600 (2023)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last Inspection424
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number016048700000000

Nearby Bridges

Il 171 SB First Av over S&s Canal 0.0 mi Fair Il 171 NB First Av over I- 55 Stevenson 0.1 mi Good Il 171 SB First Av over I- 55 Stevenson 0.1 mi Good Il 171 NB To I-55 over San & Ship Canal 0.2 mi Fair Il 171 SB Rmp I-55 over I- 55 Stevenson 0.2 mi Good Il 171 SB First Av over Rr - Cn 0.2 mi Fair Il 171 NB First Av over Rr - Cn 0.2 mi Fair I- 55 WB Rmp Il171 over Des Plaines River 0.3 mi Poor Il 171 SB Rmp I-55 over Des Plaines River 0.3 mi Fair Il 171 SB First Av over Des Plaines River 0.3 mi Fair