I-90
/ Mass Pike Exit List
New
and Former Exit Numbers
138 Miles, from NY Border to MA 1A in East Boston (Exits Renumbered between 12/13/20 and 1/15/21)
Interchange |
Milepost |
New Exit Number |
Old Exit Number |
|
2.7 |
3 |
1 |
|
10.6 |
10
(11*)
|
2
|
|
40.4 |
41
|
3
|
|
45.7 |
45 (46*) |
4
|
|
49.0 |
49
|
5
|
|
51.2 |
51
|
6
|
|
54.8 |
54 (55*) |
7
|
|
62.6 |
63 |
8
|
|
78.3 |
78 |
9
|
|
90.1 |
90 |
10 |
|
93.6 |
94 |
10A |
|
96.3 |
96 |
11 |
|
106.2 |
106** |
11A |
|
111.2 |
111 |
12 |
|
116.6 |
117 |
13 |
|
123.4 |
123 (123A
WB)
|
14
EB / 15 WB
|
To
|
123.4 |
123B
|
15B |
|
125.2 |
125 |
16 |
Newton, Watertown |
127.6 |
127** |
17 |
Allston-Brighton / Cambridge |
131.0 |
131 |
18 WB / 20 EB |
Prudential
Center/Copley Square (EB)
|
133.3 |
133 |
22
|
South
Station/Chinatown (EB)
|
134.3 |
134A |
24A |
|
134.3 |
134B (134
WB)
|
24B
|
|
134.3 |
134C |
24C |
South
Boston (WB)
|
134.8 |
135 |
25 |
Logan
Airport (EB)
|
137.2 |
137 |
26 |
|
138.1 |
-- |
-- |
South - Worcester, New London CT
(
)
-
This
exit list contains both the new exit number and old sequential exit
number after MassDOT converted I-90 to the Geographic Reference or
Milepost Exit Numbering system in January 2021. MassDOT started
converting exit numbers in October 2020 with routes in the
southeastern part of the state. This project first planned for 2016,
but eventually postponed.
* These were different numbers from the postponed 2016 project obtained from documents for: Project 606619, downloaded on 10/7/15 (for Exits 1-10) and Project 606712 downloaded 4/12/16 (for Exits 11-18) and information from Project 606024, downloaded on 10/27/15, for Exits 20 to 26.
**
Numbers changed in new iteration of MassDOT Exit Renumbering Project
website exit list in June 2020.
See
photos of the I-90 Exit Renumbering at New England Exit Renumbering
Central
Travel the Length of the Mass Pike through these Videos, Courtesy of RoadwayWiz:
Eastbound: Exits 1 to 2 Exits 2 to 3 (1/3) Exits 3 to 6 Exits 6 to 8 Exits 8 to 9 Exits 9 to 10
Exits 10 to 11 Exits 11 to 11A Exits 11A to 13 Exits 13 to 15 Exits 15 to 18 Exits 18 to 26
Westbound: Exits 26 to 24 Exits 24 to 15 Exits 15 to 13 Exits 13 to 11A Exits 11A to 11
Exits 11 to 10 Exits 10 to 9 Exits 9 to 8 Exits 8 to 6 Exits 6 to 3 Exits 3 to 2 (1/3) Exits 2 to 1
History behind the postponed projects to put up milepost exit numbers in 2016:
In May 2015 the
MassDOT sign engineer responsible for the blanket contract indicated
that the two projects to put up replacement signage along the Mass
Pike may be using the existing sequential numbers due to the
reconsideration of changing the state's exit numbers by top officials
in the Highway Administration at MassDOT (see Interstate
Exits Page). The contractors were told to prepare the exit tabs
to be long enough to fit the milepost numbers, but may be told, when
submitting their final spec drawings, to use the existing numbers. In
October the same sign engineer indicated that for the foreseeable
future, all sign replacement projects will use the existing exit
numbers, but that the exit tabs and gore signs will be designed to
display milepost based exit numbers, if/when the state adopts the
system, this includes on the Mass Pike.(1) As of early January 2020,
the western project is still listed as 36% (as it was in June 2017)
but most of the new signs have been installed with the exception of
the ramp sign westbound for I-291 and at least 1 advance sign
westbound for Exit 1, most of the many new regulatory and auxiliary
signs have been put up (see I-90 in Mass
Photo Gallery). The eastern project is still listed at 13% as it
was in 2017. Almost all the overhead signs are up, at least 1 sign
support foundation needs to be created for a new advance sign for the
I-95/128 exit in Weston. The contractor (Liddell Bros.) put up support
posts for new ground-mounted signage in early 2019, but as of May has
not placed any new signage onto it. New signage for the I-495 ramps
was finally put up in early June 2019. Exit list revised due to
opening of two new ramps for I-95 and Route 30 at former Weston Toll
Plaza westbound. The new exits are numbered 15B and 15A but the exit
tabs have enough space to change this to a 3 digit number in the
future (photos in the I-90 Gallery linked above).
I have a more detailed summary of the issues above in This Blog Post.
(1) Information by post to AARoads.com Forum by 'Roadman' under the Northeast section, I-90/Mass Pike Signing Work thread, October 4. Available at:
http://www.aaroads.com/forum/index.php?topic=16222.125
© Robert H. Malme 2013-2021