SCARBOROUGH — The Scarborough Planning Board on Monday granted final approval for an assisted living project that drew opposition from neighbors on Black Point Road.

Wegman Cos., based in Rochester, N.Y., plans to build an 81-unit senior housing facility about 300 feet from the Oak Hill intersection of Black Point Road and Route 1, in a wooded area behind an existing Citgo gas station. The 59,000-square-foot building will include a mix of studio and one-bedroom apartments, as well as a 20-bed dementia unit.

The project proposal angered neighbors on Black Point Road, prompting them to form the Friends of Oak Hill group to fight the project. Members hung signs in their yards and said the facility would create traffic problems and change the character of the neighborhood.

The facility will be located in a zone that is considered a transition between residential and commercial uses and allows senior housing. It is across Route 1 from a commercial area that includes Hannaford and Walgreens stores and a number of smaller businesses. Project developers indicated during previous Planning Board meetings that the proximity to amenities is one reason Wegman chose the location.

As part of the project, Wegman will widen a two-lane section of Black Point Road to extend a lane for cars turning left onto Route 1. The lane will allow cars turning left and cars traveling straight across Route 1 to stack up closer to the intersection. Wegman also will build a sidewalk along the length of its property.