Il 171 SB Rmp I-55 over I- 55 Stevenson

Good Condition11 years old10,500 vehicles/day

Location

StateIllinois
CountyCook
Location1.4m SW Of Il43
CarriesIl 171 SB Rmp I-55
CrossesI- 55 Stevenson
Coordinates41.79218, -87.82211

Condition Ratings

Overall ConditionGood
Deck8 (Very Good)
Superstructure8 (Very Good)
Substructure8 (Very Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length283.1 ft (86.3 m)
Max Span115.8 ft (35.3 m)
Deck Width35.1 ft (10.7 m)
Deck Area923.4 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic10,500 (2024)
Truck Traffic11%
Lanes On Bridge1
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 Number016151200000000

Nearby Bridges

Il 171 SB First Av over I- 55 Stevenson 0.1 mi Good Il 171 NB First Av over I- 55 Stevenson 0.1 mi Good Il 171 SB First Av over S&s Canal 0.2 mi Fair Il 171 NB First Av over S&s Canal 0.2 mi Fair 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 I- 55 WB Rmp Il171 over Des Plaines River 0.2 mi Poor 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