A Tisbury homeowner’s effort to build a 100-foot private pier in the Lagoon Pond has been rebuffed again by a superior court judge.

The ruling in a dispute that has been going on for five years is seen as a victory for the town’s ability to impose environmental restrictions that are stricter than those established by the state.

The case involved a challenge to the Tisbury wetlands protection bylaw that was designed, among other things, to protect valuable shellfish resources in town waters.