Trucks gathered at Love's, the Weigh Station, and North Cimarron near the Fairgrounds. An unofficial head count on parked trucks brought an estimate of 300 or more trucks stranded in Boise City on Dec. 20-21. Icy conditions on Highway 287 north, plus the fact of Denver , Colo. and Raton , N.M. being snowbound brought traffic north and west out of Boise City to a halt. The roads were finally reopened late Thursday night.