<Li> Connecticut--Started a gradual transition from sequential to mileage - based exit numbers in 2015, with secret CT 695 and I - 395 converted that year, and Route 2A in early 2016 under the same contract . The next freeways to be converted to mileage - based exit numbering will be Routes 25 and 8, with each project scheduled for completion in 2017 and 2019, respectively . The Connecticut Department of Transportation let one contract to replace signage and renumber exits on the Route 25 freeway north of the Route 8 split in July 2015, and a second contract for Route 8 in September 2015 . Two short freeways whose exits are currently unnumbered, Route 184 and Route 349 in Groton will both receive mileage - based exit numbers starting in 2018 as part of a sign replacement project that includes I - 95 from New London to the Rhode Island state line (this section of I - 95 will retain sequential exit numbers for the time being until signs along the entire length of I - 95 are updated and ready for conversion). Exit numbers on other highways will be converted to mile - based numbering over a 20 - year period as existing highway signs reach the end of their serviceable life and are replaced with new signage . As highways are converted to mile - based exit numbers, sequential numbers will be posted on "Old Exit XX" placards on advance guide signs and gore signs for two years following the conversion . Mile - based exit numbers on Interstate 4 in Volusia County, Florida circa 2003 . In this case, mile - based exits 111A and 111B had been sequential exits 53CA and 53CB, as the' OLD 53CA' tab shows . The' OLD 53CA' tabs have been removed and the signs now solely use the mileage based exits . </Li> <Li> Florida--Began January 28, 2002; now complete . However, I - 110 retained its sequential exit numbers . </Li> <Li> Georgia--Began January 4, 2000, now complete; no "former exit" signs were used in the renumbering . (Interstate highways only). </Li> <Li> Illinois formerly did not number exits on its original Illinois Tollways, including those overlaid with Interstate highways . Starting with Interstate 355 (a toll road from its inception in 1989), toll roads began to be numbered according to standard mile - based exit signage . From the 1990s through the 2010s, Illinois gradually added exit numbers to its remaining toll interstates . </Li>

What is the distance between two exits on a highway