Massachusetts Route Expressway Exit Lists

Current and Proposed Future Exit Numbers*

Image of MA 114 Exit signs on MA 128 in Peabody

On November 17, 2015 MassDOT announced the lowest bid on a contract (Project No. 608024) that would convert the state's limited access highway's exit numbers to the Geographic Reference or Milepost Exit Numbering system. The lowest bidder, Liddell Bros. Inc of Halifax, MA, was to have been awarded the contract in December 2015.

UPDATE 8/6/17: A Massachusetts legislator has filed a bill to make the state adopt milepost exit numbers for its interstates and other expressways according to this report from NPR Radio. MassDOT still says matter is under evaluation (as they have said since 2015).

UPDATE 10/5/16: It appears MassDOT has indefinitely postponed work to change exit numbers to those based on highway mileposts. Work was to start in January 2016 to convert highway exit numbers, first in the western part of the state then working eastward (except for numbers on the Mass. Turnpike/I-90 which will be changed under another contract) with a completion date for the entire project of early 2018. However, it appears the start of work is now on hold, with no specific start date announced. This appears to be the results of feedback from politicians and the public after news of the project got out. Officials on Cape Cod were publicly critical of MassDOT's plan (see this article in the Cape Cod Times) and the State Highway Administrator, Tom Tinlin is quoted in a Worcester Telegram & Gazette article saying he had not yet signed off on the project. In a public meeting in June, officials indicated the existing exit numbers would be used on the new signs, but that the exit tabs and gore signs would be designed to hold the larger milepost numbers if converted sometime in the future. Back in April, MassDOT announced the winning bidder for a project to replace exit signs on I-495. The contract was modified to include a clause whereby the state would inform the contractor whether to use milepost based numbers or keep the sequential numbers for the new signs at a later time.

On October 1, MassDOT re-advertised a project first advertised last year that would have replaced exit signs in the Big Dig and Mass Pike tunnels in Boston with those with new numbers. Based on a website forum comment from a MassDOT sign engineer, the new contract will now install signs with the existing numbers, but like with US 6, the signs will be designed to display milepost based numbers, if and when a switch is made. He also indicated that for the time being, this will be standard operating procedure for new signage replacement contracts. Signs on the Mass Pike designed for the use of milepost numbers will use the current sequential numbers as well. (1)

A MassDOT official quoted in this July 29 Article in the Cape Cod Times says “We continue to evaluate what would be in the best interest of Massachusetts taxpayers and drivers with the federal government’s milepost-based exit numbering initiative,” “Logistically, there are many questions which still need to be answered concerning how Massachusetts would transition to distance-based numbering and what the potential impacts could be on the communities we serve." For more details about the reluctance by MassDOT to start the conversion, see This Blog Post.

When/If the project starts it will not change exit signs, but will replace the numbers on the exit tabs, as shown in these diagrams from MassDOT(2):

Method of changing exit numbers on older highway signs, from MassDOT

Earlier on October 27, 2015 MassDOT posted two files to the Project 608024 bid page which contained the future 'proposed' exit numbers. The proposed numbers are, for the most part, based on a 'round down' philosophy. Thus the first exit, if at mile 0.2 would be Exit 0, while an exit between miles 1.01 and 1.99 would be Exit 1, etc. The following lists have the current number and the proposed exit number, based on the numbers in the 2015 contract documents, for each state highway listed:


 Thumbnail image of MA 2 shield from wikimedia Route 2, Greenfield to Cambridge                         


 Thumbnail of MA 3 shield from wikimedia Route 3 / Pilgrims Highway (Bourne to Braintree)       


 Thumbnail of MA 24 shield from wikimedia Route 24 / AmVets Highway, RI Border to I-93 in Randolph   


 Thumbnail of MA 25 shield, from wikimedia Route 25, I-195 to Bourne Bridge


 MA 28 shield from wikimedia Route 28, Bourne Bridge to Falmouth


 MA 57 shield from wikimedia Route 57, Henry E. Bodurtha Highway, MA 187 to US 5


Thumbnail of MA 128 shield, from wikimedia Route 128 / Yankee Division Highway, Peabody to Gloucester          


Thumbnail of MA 140 shield, from wikimedia Route 140  


Thumbnail image of MA 146 shield, from wikimedia Route 146, I-290 in Worcester to RI Border


Thumbnail of MA 213 shield, from wikimedia Route 213 / Loop Connector,  to Andover


                Lowell Connector, I-495/US 3 to Lowell

*Only Massachusetts Route Expressways with exit numbers are included in this list. As of now, MassDOT does not plan to add milepost exit numbers to highways without existing exit numbers, with the exception of MA 28 on the Cape and the MA 57 expressway near Springfield, when highway exits are converted to milepost based numbering. 

Lists include suggestions as to how some of the proposed exit numbers may be changed to more accurately reflect the mile posts.

(1) Post by Roadman in AARoads Forum, Northeast Group, I-90 / Mass Pike Signing Work thread, 5/10/2016, downloaded from: http://www.aaroads.com/forum/index.php?topic=16222.125

(2) Taken from p. A00803-5 from Project 608024, Project Drawings and Detail Sheets, Part 1, MassDOT, Highway Division, downloaded from:

https://www.commbuys.com/bso/external/bidDetail.sdo?docId=BD-16-1030-0H100-0H002-00000005477&external=true&parentUrl=bid, Link under 'File Attachments.'

Check Out Other Exit Lists:

MA Interstate Highways (and US Routes)

Check out Photos From Other Mass Highways

Check out MassDOT's Current and Planned Sign Replacement Contracts

Back to Massachusetts Highways for the 21st Century

Site Created: February 10, 2014

Last Updated: August 9, 2017

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