2012 Top 10 Bridges: No. 9

Feb. 21, 2013
LOCATION: Cook County, Ill.
COST: $13 million
LENGTH: 3,354 ft
DESIGNERS: Alfred Benesch & Co.
CONTRACTOR: Lorig Construction 
OWNER: Illinois Tollway

Operating at just the try level was not going to be good enough here. Crews had to be successful on this Illinois Tollway Tri-Level project, which was on one of the most complicated and heavily traveled interchanges on the Illinois Tollway’s 286-mile system. Repairs to the ?yover ramps included the ?rst full replacement since the interchange opened and replacement of 53-yearold precast prestressed concrete beams in the approach spans.

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