CHICAGO | Construction is moving forward on a train bridge in Chicago meant to help ease congestion that makes the city the worst choke point in the nation's freight rail network.
On Sunday, workers will pour concrete piers that will support the bridge, known as the Englewood Flyover. The span will separate rail lines that currently intersect at ground level.
Around 140 freight and passenger trains move each day through the intersection, which causes severe delays for Amtrak and Norfolk Southern freight trains.
The weekend construction work will shut down a portion of the outbound express lanes on the Dan Ryan Expressway on Sunday morning.
The flyover is one of 70 projects planned or under way in a program to untangle the train lines that make Chicago the nation's busiest rail hub.