A windmill transformer headed for a windfarm in Goldendale will be the largest commercial load recorded in Washington state history. The Washington State Patrol Commercial Vehicle Division was set to weigh the transformer Wednesday when it is removed from a train at Sundale Road off Highway 14 at milepost 28. It’s estimate to weigh 1,034,000 pounds, and is 21-feet high and 360-feet long. After it’s weighed, troopers will escort the trailer and transformer up Highway 14 to milepost 100. It will then travel up Highway 97 to milepost 3 and break overnight. On Thursday evening the load will make its way from milepost 3 to Hoctor Road, and then carry on to the Goldendale windfarms. Drivers who travel on Highways 14 and 97 should be aware that because of the transformer’s significant size and difficult terrain, both highways will have traffic impacts Wednesday evening from 10:00 p.m. to 4:00 a.m.