Construction of a 1,500-unit planned community, one of the largest ever approved by the Prince William County Board of Supervisors, may begin as early as next year, said Tony Salla, an executive with Ridge Development Corp., developer of the Lake Ridge planned community and Tackett's Mill, the county's first multiuse development.

The 400-acre community, which will have 435 single-family homes, 560 town houses and 455 apartments/condominiums, received little adverse comment at public hearings and was recommended for approval by both the planning commission and the planning staff before its approval last month by the supervisors, county planner Keith Palmetier said.

The community, dubbed Westridge, will be built on Old Bridge Road on land formerly zoned agricultural. According to Salla, the proposal offers such amenities as a recreational facility that may include an Olympic-sized swimming pool; a commuter parking lot; offside road improvements and a 15-acre site dedicated to the Board of Supervisors to handle the student population expected to be generated by the size of the development.

In addition, Salla said, an eightfoot wide trail will cross the community and connect it to Lake Ridge Park and the Davis Ford Road complex, which holds a county administration complex, four softball diamonds and the Prince William Pirates professional baseball park.

Although the density of the development is slightly in excess of the density recommended by the county's comprehensive plan, this factor is offset by the "significant public improvements" offered by the developer, a staff report said.

The developer intends to rezone 30 additional acres without increasing the number of residential units, the report said, to keep the density consistent with the comprehensive plan.

Because the development will generate about 11,700 vehicles a day in new traffic, the developer-proposed road improvements were vital to this project, the planner said.

The developer has proposed providing $300,000 in money, materials and labor to the Transportation Department to upgrade Old Bridge Road and acquire additional right of way, the staff report said.