[3] The entire toll road is designated as part of Interstate 90 (I-90), and the segment from Lake Station east to the Ohio state line (which comprises over 85 percent of the route) is a concurrency with I-80.

The original number sequence was amended slightly in 1964 with the opening of the then-Burns Harbor, now Lake Station, exit.

[citation needed] Upon taking office in 2005, Governor Mitch Daniels began looking for ways to fund a backlog of Indiana highway maintenance and construction.

In lieu of SITR, I-69 was built using $700 million (equivalent to $1.02 billion in 2023[11]) of the Major Moves payout for the section from the I-64/I-164 interchange to Naval Surface Warfare Center Crane Division.

[citation needed] Some elected officials and candidates for office in the toll road counties expressed concerns that projects in and around Indianapolis would receive too large a share of the lease proceeds to the detriment of northern Indiana.

"Now that the deal is done, the governor and officials in his administration have traveled the state to claim that the sale has financed every major road project scheduled over the next decade", Bauer said.

[17] In December 2006, the ITRCC announced that a South Bend student, Andrea Hebster, would "receive $5,000[b] toward her educational expenses for being selected as the grand prize winner of the Indiana Toll Road logo design contest".

[20] Then-Democratic US Senator Joe Donnelly urged Republican Governor Mike Pence to return the road to public control.

However, Pence instead ordered a tender process to replace the operator and ultimately approved the purchase of the road by IFM Partners, an Australia-based firm.

[22] Originally, the entire toll road was on a closed ticket system, with Westpoint at current exit 5, roughly under the East 141st Street overpass.

A computer system switchover, scheduled for June 11, 1984, but not performed until July 14, 1986, replaced punch card tickets with magnetically encoded ones for the section from mile 24 eastward and instituted cash collection for the remainder of the highway.

The i-Zoom brand name was retired starting in September 2012 to take advantage of the already-existing E-ZPass brand and to avert confusion with the upcoming Ohio River Bridges Project in the Louisville metropolitan area, which is managed by the Louisville–Southern Indiana Bridge Authority and uses the E-ZPass system.

Originally, various oil companies included Standard, Sinclair, Pure, Gulf, Texaco, Citgo, ARCO, and Union 76 operating over the years at each of the travel plazas.

The westernmost snack bar at milepost 37.5 remained open until the mid-70s and is now used as a "Truck Only Parking" rest area[26] with no facilities.

[31] In June 2015, Ken Daley, the new CEO of the ITRCC, announced that all of the original travel plazas built in 1955 would be demolished and replaced within the next five years.

As of July 2020[update], there are eight restored travel plaza rest stops on the ITR, four eastbound and four westbound, situated across the divided highway from each other.

All travel plazas have modern restrooms, telephones, ATMs, vending, lottery machines, and electric vehicle charging stations.

The lease agreement also requires ITRCC to maintain or improve the condition of the Toll Road to standards set forth by state and federal law.