New York will begin converting exit signs on Interstate 88 to a mile-based numbering system Monday, starting in Broome County and working east toward the Capital Region.
The $1.1 million state Department of Transportation project covers more than 117 miles through Broome, Chenango, Delaware, Otsego, Schoharie and Schenectady counties. Work is expected to continue through the end of 2026.
Crews will begin in Port Crane at the current Exit 3, which will become Exit 4 because it is about four miles from the highway’s western starting point. The project will then move east to the I-90 and New York State Thruway interchange in Rotterdam, where the current Exit 25 will become Exit 117. Exits 1 and 2 will keep their numbers because they already match their approximate mile locations.
To ease the transition, signs will temporarily show both numbers, with the new mile-based number above the old sequential number. The older numbers will be phased out after motorists have had time to adjust.
DOT says the system will help drivers judge distances and allow emergency responders to identify locations more quickly. Similar mile-based numbers were introduced on Interstate 81 in Broome County in 2025.
Most work will occur during the day on highway shoulders, and traffic is expected to continue flowing. Drivers should slow down and use caution when approaching crews. Current travel conditions are available through 511NY.
