Il 171 NB First Av over I- 55 Stevenson

Good Condition10 years old39,600 vehicles/day

Location

StateIllinois
CountyCook
Location1.4 M SW Of Il 43
CarriesIl 171 NB First Av
CrossesI- 55 Stevenson
Coordinates41.79333, -87.82071

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length258.9 ft (78.9 m)
Max Span92.2 ft (28.1 m)
Deck Width52.2 ft (15.9 m)
Deck Area1254.5 sq m
Main Spans3
Year Built2016

Traffic

Avg Daily Traffic39,600 (2023)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number016151100000000

Nearby Bridges

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