YARD 1’s Post

Walsh Construction pours a new pier cap over the entrance ramp connecting I-88 to I-294/I-290; a marquee pour for the I-290/I-88 Interchange Project at I-294. The cap measures 100 feet long, 11 feet wide, and 12.75 feet tall and weighs approximately 2.2 million pounds. In a 12-hour shutdown of the ramp and lanes on I-88, crews poured 513 cubic yards on a formwork system that spanned 55 feet. This formwork system required multiple months of design and a month and a half to build. After a two-to-three week cure period, the cap will be post tensioned and the girders for the new 600-foot bridge over I-88 will be set. This entrance ramp is the Illinois Tollway's busiest, a daily connection for 300,000 cars to the interchange. #WalshAtWork