The learning curve developed from building the first bridge helped McHugh complete the work so early, said Michael Gould, McHugh vice president of infrastructure, as did a good rapport with the Tollway.
"We had an excellent relationship with the Tollway
, built during construction of the first bridge, and that made a difference," Gould
worked from the river's banks and built temporary access structures, including a temporary bridge, to deliver materials and perform work while maintaining the river's flow, said Gould
While building the new eastbound span, McHugh
persevered through a 500-year flood event and two 100-year flood events.
As a result, the team was better prepared for the changing dynamics of the Fox River during construction of the westbound bridge.
Demolition, which was not a part of the first bridge, posed an even greater challenge.
To keep the bridge balanced and stable during demolition, McHugh
had to reduce the weight on the bridge deck as much as possible, and then demolish each arch "barrel" from north to south, carefully reducing the width of each arch while maintaining its stability, Gould