I-490 Tollway

I-490/I-90 Interchange Project

Project Overview

The Illinois Tollway is building a new, full-access interchange that will connect the new I-490 Tollway to the Jane Addams Memorial Tollway (I-90) in Des Plaines.

Construction began in the summer of 2018 and is scheduled to be complete in 2023.

In 2020, work is scheduled to construct the new ramps that will connect I-490 to westbound I-90 and the I-490 bridge that will carry traffic over the Touhy Avenue Reservoir. Work is also scheduled to continue constructing the collector-distributor roads along I-90, retaining walls and barrier walls, as well as drainage and utility work.

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Construction Update (9/18/20)

On I-90 east of Elmhurst Road traffic in both directions is shifted. Traffic is scheduled to remain in this configuration through the end of the year.

In addition, at the Elmhurst Road Interchange, shoulders are closed on the ramps.

Please check the Daily Construction Alert for up-to-date closure information.

Construction Site Image

Customer Impacts

Lane closures and traffic shifts are necessary to provide a work zone and safely accommodate traffic during construction.

To accommodate interchange construction, shoulders in both directions on I-90 between Elmhurst Road and Mount Prospect Road will be closed and traffic will be shifted. In addition, overnight lane closures will be scheduled as needed.

Work Zone Safety

The Illinois Tollway is committed to ensuring that the Jane Addams Memorial Tollway (I-90) remains safe for both drivers and workers during construction, which is part of the agency’s overall commitment to roadway safety.

Work zone speed limits are in effect in all construction zones 24/7 and drivers should continue to watch for changing traffic patterns and use caution, especially when workers are present.


The new I-490 Tollway, coupled with the Illinois Route 390 Tollway which was completed in 2017, will connect businesses and communities with one of the nation’s busiest airports, transit facilities, major freight transportation hubs, distribution centers and multiple interstate highways including the Jane Addams Memorial Tollway (I-90) and the Central Tri-State Tollway (I-294).


The Tollway is committed to building green and minimizing the environmental impact of construction by reducing, recycling and reusing materials. In addition to reducing the cost of this work, reuse of these materials reduces the need for virgin asphalt materials and reduces energy consumption, greenhouse gases and the volume of material that would otherwise be sent to landfills.