Vanderbilt State Route 27

The route marker sign used for Oswalt State Route 27.

Oswalt State Route 27 is a highway route currently under construction that begins in Suffolk Village at the northern terminus of Interstate 27 at a concurrency with Colonia Route 31 and currently ends in Cairo with plans to continue northward. The exit numbers of this highway continue where Interstate 27 left off, starting at 38 and continuing upwards; currently the highest exit number is 39. The route starts on Main Street in Suffolk and heads north through the town square, before entering the town of Silvo. As it approaches the town, the route makes a turn westbound onto Dawson Highway and starts traversing into the Sansee Desert, where it soon after intersects with Colonia Route 31A (Levitt Road) at exit 38. At this intersection, State Route 27 turns to the north, where the highway eventually divides into a two-way divided highway. The route currently ends slightly north of Alexandria Street in Cairo, where the concurrency with Route 31 also ends as it turns east onto the local street.

Exit list

Location	mi	km	Exit	Destinations	Notes
Suffolk Village	2.9	4.6	37A	Interstate 27 (Sunrise Expressway) - Vanderbilt City	Exit numbers / mile markers continue downwards on Interstate 27; concurrency with Route 31 begins
			37 E-W	Colonia Route 31/Colonia Route 31B (Islip Avenue) - Vanderbilt City, Belvedere Village	Eastern terminus of Route 31B
		4.7	-	Belvedere County Route 8 (Hauppauge Boulevard) - Suffolk Village, New Nassau	No exit numbers assigned
				Riverhead Avenue - Suffolk Village
	3	4.8		Farmingdale Avenue - Suffolk Village
Silvo		4.9		Belvedere County Route 27 (Massapequa Avenue) - Silvo, West New Nassau	No exit number assigned, northern terminus of County Route 27
	3.4	5.4	38	Colonia Route 31A (Levitt Road) - Kareen	Eastern terminus of Route 31A
Cairo	4	6.5	39	Colonia Route 31 (Alexandria Street) - Cairo	Concurrency with Route 31 ends
			-	-	Route to be continued northbound