The megaload made the trek from Hammett to Cat Creek Summit early Monday, arriving after 3 a.m.
It is expected to resume travel after 10 p.m. Monday.
The shipment spent most of last week in Marsing due to the Christmas holiday and to fog.
The Idaho Statesman reported that the New Year’s holiday also will slow its exit from Idaho, as it won’t resume travel until Thursday, weather permitting.
The load is limited to traveling between 10 p.m. and 6 a.m. It started in Oregon and is expected to pass through Montana before reaching the Canadian line.
It is the first of three massive shipments expected.
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