Wasn't the operation and maintenance of the Toll Road changed from INDOT to ITR Concession Company LLC (ITRCC) in 2006 when the state leased it out?
ISP TOLL Road which was the" old Dist 11" was on 154.755 before going to Safe-t before that all Dist 11 Toll Road Units had low band 42Mhz and did talk to Lowell Post on F-3 42.120.Also Dist 11 had their own VHF freq which was 154.755.You might listen to 154.755 as this was also a Toll Road channel.