Tri-State Tollway - History

History

The Tri-State Tollway was built in the mid- to late 1950s as a bypass of Chicago, as the Indiana Toll Road-Chicago Skyway (opened in 1956) ran towards downtown. The first section opened August 28, 1958, running from Wisconsin south to and east along the Edens Spur. The rest of the road, from the Edens Spur south to the Calumet Expressway and Kingery Expressway, opened December 23 of the same year. It was at first marked as U.S. Highway 41 Toll, which continued east on the Kingery Expressway (now I-80/I-94) to Calumet Avenue (US 41) in Hammond, Indiana, and ended at the north end of the Tollway, where it merges with US 41. It was also marked as U.S. Highway 30 Toll between its south end (the Calumet Expressway was U.S. Highway 30 Alternate) and the East–West Tollway. In 1959 the Tollway was designated as parts of I-94 and I-294, and the short concurrency with I-80 was assigned.

In 1998, the authority removed the entire multilane Deerfield Toll Plaza on the Tri-State, then considered one of the worst snags on the tollway system. To make up for the lost tolls, the Tollway Authority built the Huehl Road Toll Plaza on the Edens Spur to charge traffic that followed Interstate 94 into Chicago. In addition, tolls at the Waukegan Toll Plaza were increased, and additional toll plazas built on exits south of Deerfield at Lake-Cook Road, Willow Road and Golf Road (Illinois Route 58). Toll collection facilities were also added to entrance ramps to the northbound Tri-State at those points.

Numerous projects to rebuild and widen the entire Tri-State Tollway were completed by early 2010.

As of December 30, 2009, Clearview Font signage was installed on the Tollway system, and the mileposts of the I-94 portion of the Tri-State Tollway and Edens Spur no longer use the original milepost signage from IL-394 and I-80. Milepost signs north of Lake-Cook Road now use I-94's mileage from south of the Wisconsin state line. Example: I-294 going north has milepost numbers going up to mile 53. I-294 mile 53 becomes I-94 mile 25 going north with the milepost numbers going down. Milepost numbers are now visible every 1/4 mile, as opposed to the previous signage at 1/2 mile intervals.