I-495 in MA Exit List

121 Miles, From I-195 to I-95 near NH Border

Interchange	Milepost	Current Exit Number	Future Exit Number
West - New Bedford, Providence, RI (SB)	0.1	1	1 (0)*
North - Carver, Plymouth	2.5	2	2
- Rock Village, S. Middleboro	7.6	3	8
- Middleboro Ctr, Lakeville	12.1	4	12
North - Bridgewater, Plymouth	14.3	5A	14A
South - Lakeville, New Bedford	14.3	5B	14B
- Middleboro, Plymouth	14.7	6	15
North - Boston	19.0	7A	19A
South - Fall River	19.2	7B	19B
- Stoughton, Taunton	21.7	8	22
Bay St - Taunton, Easton	24.5	9	25
- Norton, Easton	26.9	10	27
South - Norton (SB)	29.9	11	30
North - Mansfield	29.9	12	31
North - Boston	32.9	13A	33A
South - Providence, RI	32.9	13B	33B
North - Wrentham	35.6	14A	36A
South - N. Attleboro	35.6	14B	36B
- Wrentham, Plainville	37.6	15	38
King Street - Franklin, Woonsocket, RI	41.0	16	41
- Franklin, Bellingham	43.2	17	43
- Medway, Bellingham	45.8	18	46
- Milford, Medway	48.3	19	48
- Milford, Hopkinton	50.2	20	50
W. Main St - Hopkinton	54.2	21A	54A
W. Main St - Upton	54.2	21B	54B
- Boston, Albany, NY [Toll Road]	57.9	22	58
East - Framingham	59.4	23A	59A
West - Worcester	59.4	23B	59B
Simarano Dr - Marlboro, Southboro	61.8	23C	62
East - Northboro	63.2	24A	63A
West - Marlboro	63.2	24B	63B
To  - Hudson	65.0	25A	65A
West - Worcester	65.0	25B	65B
- Berlin, Hudson	67.3	26	67
- Bolton, Stow	70.0	27	70
- Boxboro, Harvard	74.7	28	75
East - Boston	77.6	29A	78A
West - Leominster	77.6	29B	78B
- Littleton, Ayer	79.2	30	79
- Groton, Acton	80.2	31	80
Boston Rd - Westford	83.3	32	83
- N. Chelmsford (NB)	87.3	33	87
( SB) - Chelmsford, Lowell	88.2	34	88
South - Burlington	89.1	35A	89A
North - Nashua NH	89.4	35B	89B
Lowell Connector - Lowell	89.4	35C	89C
Woburn St - S. Lowell, N. Billerica	91.2	37	91
- Lowell, Tewksbury	92.3	38	92
- Tewksbury, Andover	94.6	39	94
South - Boston	97.0	40A	97A
North - Salem, NH	97.1	40B	97B
South - Andover	99.4	41A (41 SB)	99A (99 SB)
North - Lawrence (NB)	99.4	41B	99B
East - N. Andover	100.2	42A	100A
West - S. Lawrence	100.2	42B	100B
Mass Ave - N. Andover	101.0	43	101 (101A)*
Marston St (NB) / Merrimack St (SB)	101.4	44	102 (101B)*
Merrimack St (NB) / Marston St (SB)	101.9	45A	103A (102A)*
Commonwealth Dr (NB) / Marston St (SB)	101.9	45B	103B (102B)*
Merrimack St - Pleasant Valley	103.1	46	104 (103)*
to North  - Methuen, Salem, NH	104.1	47	105 (104)*
- Ward Hill, Bradford	105.8	48	106
- River St	106.6	49	107 (107A)*
- Haverhill, Salem, NH	107.3	50	108 (107B)*
South - Haverhill	109.0	51A	109A
North  - Plaistow, NH	109.0	51B	109B
- Haverhill, Merrimac	111.2	52	111
Broad St - Merrimac, Merrimacport	114.9	53	115
- Amesbury	117.9	54	118
To South - Salisbury, Boston	118.9	55	119
Merge onto  North (NB)	121.0	--	--

This exit list contains both the current exit number and proposed future exit number when MassDOT converts I-495 to the Geographic Reference or Milepost Exit Numbering system. MassDOT plans to convert existing exit numbers starting in late summer 2020 with routes in the western and southern parts of the state. This project was first planned for 2016, but eventually postponed. The future numbers listed are those provided at the MassDOT Exit Renumbering Project website, downloaded Nov. 21, 2019.

*Numbers in ( ) listed for the postponed 2016 Renumbering Project.

Here's a sign plan for the current I-495 Sign Replacement Project for the northernmost section between Methuen and Andover:

The plans show wider exit tabs for future placement of milepost based exit numbers. The Exit 49 tab is wider since the proposed exit number is 107A. More sign plan photos in I-495 in Mass. Gallery.

       Go to I-495 in Mass. Photo Gallery (New)

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© Robert H. Malme 2013-2020