The A3611 was reserved on 13/11/2006 for an unknown route in Trowbridge, Wiltshire. The number suggests something relating to the A361 - as there are no plans for a bypass, one can only imagine that it relates to the unclassified road through Southwick and North Bradley that is signed as a (A361) primary route or the route through the town should the A361 be diverted onto this unclassified road.