The Androscoggin Brunswick-Topsham Riverwalk Advisory Committee will celebrate the opening of the newest segment of a walking trail that will loop through Topsham and Brunswick.

The recently-completed Mill Road and Summer Street sidewalk segment of the Androscoggin Brunswick-Topsham Riverwalk will be officially unveiled with a ribbon-cutting ceremony at 5 p.m. Monday, according to the advisory committee.

Dan Stewart, the statewide bicycle and pedestrian program manager for the Maine Department of Transportation, will speak about the importance of community projects such as the Riverwalk.

Representatives of the Topsham Heights Franco- American community, former mill workers who traveled between Topsham and Brunswick on the Swinging Bridge, will cut the ceremonial ribbon; and Woodside One Wheelers will perform on a variety of unicycles.

This phase of the Riverwalk, which cost approximately

$120,000, links the historic Swinging Bridge to the sidewalk on Summer Street with a paved, wooded path along the Topsham bank of the Androscoggin River.

It brings the project closer to meeting its objective of creating a safe, fully-accessible, four-season 1.25-mile loop on both sides of the river between the Frank J. Wood (“Green”) Bridge and the Swinging Bridge.

Future phases include a bicycle and pedestrian path along the river’s edge on Mill Street in Brunswick, separated from Route 1 traffic by a guardrail; improving the route along Maine, Cabot and Bow streets adjacent to Fort Andross; and creating a park and overlook at the Priority Business Center in Topsham.

The design for the Riverwalk was created by landscape architect Anthony Muench in consultation with officials from Topsham and Brunswick.

Engineering services were provided by Wright- Pierce. Harry C. Crooker and Sons Inc. constructed this portion of the Riverwalk.

Terracon Consulting Engineers and Scientists in Westbook donated testing and inspection.

In addition to a major grant from MDOT’s Quality Community Program, funding was contributed by the Fore River Foundation and the Alfred M. Senter Fund.

Technical support was provided by the National Park Service Rivers, Trails and Conservation Assistance Program. Davis Conservation Fund awarded a $25,000 grant to the project in 2010.