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)

Legend:
Stop Info
Connections

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

N
High St. (Tri-City Plaza #140)
S
High St. (Dollar Tree)

Hot n Fast Somersworth House of Pizza

52 Market Street, Somersworth, NH 03878

N
Market St. (Borderline Beverage)
S
Market / Winter Sts. (Stateline Minimart)

Services

Location Nearest Stop

Berwick Town Hall

11 Sullivan Street, Berwick, ME 03901

N
Berwick Town Offices
S
Sullivan St. (Berwick Town Hall)

Digital Ink Printing

72 High Street, Somersworth, NH 03878

N
High St. (VFW / City Hall)
S
High St. / Government Way (City Hall)

Leroy's Styles

59 High Street, Somersworth, NH 03878

N
High St. (VFW / City Hall)
S
High St. / Government Way (City Hall)

Apartments

Location Nearest Stop

Canal Street Mill (Chinburg Properties)

36 Canal Street, Somersworth, NH 03878

N
High St. (VFW / City Hall)
S
High St. / Government Way (City Hall)

Charpentier Apartments

28 Franklin Street, Somersworth, NH 03878

N
High / Washington Sts.
S
High / Noble Sts.

Retail Stores

Location Nearest Stop

Poppy Seed Studio

74 High Street, Somersworth, NH 03878

N
High St. (VFW / City Hall)
S
High St. / Government Way (City Hall)

The Gathering Place Studio & Shop

82 High Street, Somersworth, NH 03878

N
High St. (VFW / City Hall)
S
High St. / Government Way (City Hall)