DIRECTIONS TO ONS IN GREENWICH, CT 06831

6 Greenwich Office Park, Greenwich, CT 06831  |  Open Monday- Friday | 8:00 a.m. to 5:30 p.m.
(Business office is located at 9 Greenwich Office Park)

Southbound

• Take I-95 SOUTH
• Take Exit 3/Arch St. Go RIGHT off the ramp onto Arch St.
• Follow directions from Arch St.

Northbound

• Take I-95 NORTH
• Take Exit 3/Arch Street. Go LEFT off the ramp onto Arch Street
• Follow directions from Arch Street

From Arch Street in Greenwich

• Continue straight on Arch St. At the Shell service station, turn LEFT onto Railroad Ave.
• At the second traffic light, turn RIGHT onto Prospect St.
• At traffic light, turn LEFT onto West Putnam Ave. and proceed to 2nd traffic light.
• Turn RIGHT at light onto Valley Drive. Proceed on Valley Drive (approximately .25 miles).
• Turn LEFT at sign for Greenwich Office Park. ONS is building #6.

From Northern Westchester

• Take I-684 SOUTH to Exit 3/ RT-22 NORTH for .2 miles.
• Turn LEFT onto NY-22 N/Armonk Bedford Rd. for .5 miles.
• Turn RIGHT onto North Greenwich Rd.which becomes Riversville Rd.
• Continue on Riversville Rd. for 6 miles.
• Turn LEFT at light onto Glenville Rd. for .2 miles.
• Turn RIGHT onto East Weaver St. for 1.5 miles. Enter Greenwich Office Park on the left. ONS is building #6

From Merritt Parkway N & S

• Take Exit 28 (Round Hill Rd.)
• Going SOUTH: turn LEFT onto Round Hill Rd.
• Going NORTH: turn RIGHT onto Round Hill Rd.
• Proceed 2.8 miles to intersection of Round Hill Rd. and Lake Ave.
• Turn RIGHT onto Lake Ave.and proceed 1.2 miles to rotary.  Turn RIGHT onto Glenville Rd. for .3 miles.
• Turn LEFT onto Valley Drive for .6 miles. (Valley Drive becomes Upland Drive, then turns back into Valley Drive.) Turn RIGHT into Greenwich Office Park. ONS is building #6

[Southbound] FROM I-95 SOUTH

• In New York, take Exit 18 B for Mamaroneck Avenue West toward White Plains
• In approximately 1.2 miles, go right at the 500 Mamaroneck Avenue, South Entrance.
• ONS is on the left. Parking is in front of the entrance.

​[Southbound] FROM MERRITT/HUTCHINSON RIVER PARKWAY SOUTH

• Take Exit 23 South to Mamaroneck Avenue South toward Mamaroneck.
• At the fourth traffic light, turn left into the 2nd entrance to 500 Mamaroneck Avenue, South. (Important: Google maps directs you to the 3rd light and North Entrance. Do not enter the North entrance.)
• ONS is on the left. Parking is immediately in front of the entrance.

[Northbound] FROM I-95 NORTH

• Take Exit 18B for Mamaroneck Avenue West toward White Plains.
• In approximately 1.2 miles, turn right into 500 Mamaroneck Avenue, South Entrance.
• ONS is on the left. Parking is in front of the entrance.

[Northbound] FROM HUTCHINSON RIVER PARKWAY NORTH

• Take Exit 23 South to Mamaroneck Avenue toward Mamaroneck.
• At the third traffic light, turn left into the 2nd entrance to 500 Mamaroneck Avenue, South. (Important: Google maps directs you to the 2nd light and North Entrance. Do not enter the North entrance.)
• ONS is on the left. Parking is in front of the entrance.