(Portland, OR)  --  An Oregon Department of Transportation worker is hurt following a series of crashes on Highway 26.  Police say the worker was injured after someone crashed their car into their incident response truck.  Police say snow and icy conditions led to multiple crashes last night just west of the Vista Ridge Tunnel near Washington Park.  Westbound lanes were blocked after a TriMet bus crashed, while a two-car crash shut down all but one of the eastbound lanes.