Contract awarded for Keystone and 146th Street interchange


The Indiana Department of Transportation last week announced a $35.7 million contract award for construction of new U.S. 31 Hamilton County interchanges at Keystone Parkway and 146th Street. As part of its bid, Walsh Construction Company reduced the closure of Keystone Parkway at U.S. 31 to just under three months in either direction.

Crown Point-based Walsh Construction submitted the lowest and best bid among three contractors, reducing the Keystone Parkway closures to 90 days southbound and 80 days northbound, weather and other factors permitting.

Starting next year, U.S. 31 construction will span the area from the Monon Trail crossing in Carmel to Greyhound Pass just across the border in Westfield. Crews currently are relocating utilities and clearing land to make room for the new roadway. Construction on the Keystone Parkway-146th Street interchange is expected to begin in the spring.

As traffic is shifted to facilitate U.S. 31 construction, either direction of Keystone Parkway will be closed to build four new bridges. Detour routes will direct motorists traveling on Keystone Parkway to alternative routes. An incentive will be offered for each day the bridges are reopened earlier than Walsh anticipates. Should it take them longer, the contractor will be liable for monetary damages.

The next construction contract, scheduled for bid in summer of 2012, will encompass U.S. 31 from the 146th Street bridge to 156th Street, with reconfigured access at 151st Street, Union Street and Greyhound Pass.

Graphic representations of the interchange system can be found at


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