Great Bay Building Hours & Location
Portsmouth Campus
Monday to Thursday
7:00am – 9:00pm*
Friday
7:00am – 4:00pm*
Saturday & Sunday
Closed
*Monday to Friday the building closes after the last class is dismissed
Rochester
GBCC Rochester Building hours follow published course meeting times for instructors and students in Welding, CNC and NDT. All visitors and those seeking GBCC services should contact our Portsmouth Campus.
Directions, Maps & Contact Information
Great Bay Portsmouth
Main Campus
320 Corporate Drive
Portsmouth, NH 03801
Phone: (603) 427-7600
(800) 522-1194
Fax: (603) 334-6308
Email: [email protected]
TDD/Voice: Relay New Hampshire
(800) 735-2964 or 711
www.relaynewhampshire.com
Rochester Building
Welding and Advanced Manufacturing Labs
5 Milton Road
Unit 32
Rochester, NH 03867
Phone: (603) 427-7600
(800) 522-1194
Fax: (603) 334-6308
Email: [email protected]
HOLIDAYS & CLOSURES
Great Bay campuses will be CLOSED and NO CLASSES will be held on the following days:
Juneteenth Holiday (June 19)
Thursday, June 19, 2025
Independence Day
Friday, July 4, 2025
Labor Day
Monday, September 1, 2025
Veterans Day
Tuesday, November 11, 2025
Thanksgiving Holiday
Thursday, November 27 & Friday, November 28, 2025
Winter Recess Day
Wednesday, December 24, 2025
Christmas Day Holiday
Thursday, December 25, 2025
Winter Recess
December 26-31, 2025
New Year’s Day
Thursday, January 1, 2026
