100Route 100 - Somersworth / Berwick / Kittery (PNSY Gate 1)
The last day of COAST Route 100 will be Friday, October 3, 2025. No service will be available on this route after that day. COAST will continue to service the Portsmouth Naval Shipyard via Route 13 (the first run in the morning continues to the PNSY at 5:55am) and Route 44.
For current information on our services, including where the bus is in real time, short term stop closures/detours, or temporary service suspensions, please use the Passio Go app.
Schedule (Effective 07/15/25)
Weekday Schedule Notes:
- Parking at Eliot Commons is not free of charge. Contact the property managers for details on the fee structure.
- Northbound times after leaving the PNSY are estimates. The bus will not hold at stops and may leave early
- Please click on this link to see a full list of Route 100 Bus Stops that is printable.
Map
Food & Drink
Location Nearest Stop
Ay Jalisco Mexican Grill & Cantina
475 High Street, Somersworth, NH 03878
Hot n Fast Somersworth House of Pizza
52 Market Street, Somersworth, NH 03878
Services
Location Nearest Stop
11 Sullivan Street, Berwick, ME 03901
72 High Street, Somersworth, NH 03878
59 High Street, Somersworth, NH 03878
Apartments
Location Nearest Stop
Canal Street Mill (Chinburg Properties)
36 Canal Street, Somersworth, NH 03878
28 Franklin Street, Somersworth, NH 03878
Retail Stores
Location Nearest Stop
74 High Street, Somersworth, NH 03878
The Gathering Place Studio & Shop
82 High Street, Somersworth, NH 03878