The second of four ConocoPhillips megaloads was permitted Thursday afternoon to start moving Thursday night from the Port of Lewiston in Idaho.
The Idaho Transportation Department released the news just before 5 p.m. — about six hours before the move could legally begin.
ITD said Emmert International has made several significant changes to the travel plan to address problems with the first load, which sits near Lolo Hot Springs southwest of Missoula.
The four-night haul to Montana has been expanded to seven. Seven trucking companies have agreed to rearrange schedules to avoid encountering the big rig. To better negotiate curves, the load will be manually steered around them.
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It'll take two nights instead of one to travel the most problematic leg between Orofino and Kooskia, Idaho. Adjustments will be made in how the load crosses five bridges, and dollies will be required on two additional bridges.
ITD said it weighed the second load last week and determined it was 34,000 pounds heavier than listed by Emmert. Modifications were required to safely cross bridges. The load weighs approximately 705,000 pounds, or more than 350 tons.
If the plan works, the load will arrive in Montana next Thursday morning. The two loads then will be transported together across the state to the ConocoPhillips refinery in Billings.