Il 171 over I-355

Fair Condition19 years old11,500 vehicles/day

Location

StateIllinois
CountyWill
Location0.62 M S Of 139th ST
CarriesIl 171
CrossesI-355
Coordinates41.63245, -88.01471

Condition Ratings

Overall ConditionFair
Deck6 (Satisfactory)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length322.2 ft (98.2 m)
Max Span131.9 ft (40.2 m)
Deck Width101.0 ft (30.8 m)
Deck Area3024.6 sq m
Main Spans2
Year Built2007

Traffic

Avg Daily Traffic11,500 (2023)
Truck Traffic12%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last Inspection823
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number099033300000000

Nearby Bridges

143rd ST over I-355 0.4 mi Good I355 NB over Long Run Creek 0.7 mi Good I355 SB over Long Run Creek 0.7 mi Good Smith RD over Long Run Cr. 0.8 mi Poor 135th Street over Long Run Creek 0.8 mi Good Il 171 over Long Run Creek 0.9 mi Good State ST over Long Run Creek 1.1 mi Fair 151st St. over I-355 1.4 mi Good 127th Street over I 355 1.7 mi Good High Road over Long Run Creek 1.7 mi Good