Highway Exit Renumbering Set To Begin On I-93 North Of Boston

ANDOVER, MA — The renumbering of Interstate 93 exit signs between Boston and Methuen is due to begin Monday, six months after it began across the state.

Renumbering between old exit 13 to exit 27, between Dorchester and the Tip O'Neill Tunnel, was underway as of Thursday.

Work will proceed between old exit 28 and 48 beginning Monday and could take up to four weeks, officials with the Massachusetts Department of Transportation said.

Sign installation will take place between 8 p.m. and 5 a.m. each night.

The project will switch current exit numbers to ones based on mileage, bringing the state in line with federal highway mandates. Massachusetts, Delaware and New Hampshire are the only three states to not have started work on converting to a mileage-based system.

The Massachusetts Department of Transportation said it's making the changes to comply with a federal mandate. If it does not fall in line, it could risk federal funds. Federal funds in this case will pay for 90 percent of the cost of changing sign numbers.

I-93 exit numbers 1 through 12 will remain the same exit numbers as they are already consistent with the existing mile markers.

The old exit signs will remain up for two years after the replacement signs are installed.

Here are the new exits to help I-93 commuters get used to the change: