A fire about 1:15 p.m. Tuesday destroyed a bathhouse near the 16th hole at River Oaks Golf Course, 201 Whitehaven Road, Grand Island, the Grand Island Fire Company said.

The structure was fully ablaze when firefighters arrived. Since it posed no hazard to life or other structures, firefighters waited until National Grid cut off power to the building before they extinguished the blaze.

Damage was estimated at $40,000. Fire investigators have not yet determined the cause.