Interstate 27

The route marker shield used for Interstate 27.

Interstate 27 is an Interstate route currently in progress that begins south of Vanderbilt City at the Vanderbilt Parkway (Interstate 127) and ends at the southern terminus of Oswalt State Route 27 in Suffolk Village, where the right-of-way and exit numbers continue on. Currently, exit numbers on this highway number from 33 until 37A. The highway traverses the Baldwin Tunnel, which runs under South New Nassau and West New Nassau, and the Major Thomas Jones Memorial Bridge, which connects the latter to Suffolk Village and, by extension, New Nassau.

Exit list

Location	mi	km	Exit	Destinations	Notes
Vanderbilt City	0.0	0.0	33	Interstate 127 (Vanderbilt Parkway) - Vanderbilt City	Commercial vehicles not permitted on Vanderbilt Parkway
West New Nassau	1.3	2.1	34	Belvedere County Route 27 (Lake Success Street) - West New Nassau	Southern terminus of County Route 27
South New Nassau	1.8	2.9	35	Lynbrook Circle - South New Nassau
West New Nassau	2.7	4.4	36	Belvedere County Route 427 (Hewlett Avenue) - West New Nassau
Suffolk Village	2.9	4.6	37 E-W	Colonia Route 31/Colonia Route 31B (Islip Avenue) - Vanderbilt City, Belvedere Village	Eastern terminus of Route 31B
			37A	Colonia Route 31/Oswalt State Route 27 (Main Street) - Cairo	Exit numbers / mile markers continue upwards on State Route 27; Route 31 and State Route 27 run concurrent until Alexandria St. in Cairo