Officials in southwest Ohio are warning drivers that crews hauling several unusually oversized loads will slow traffic to a crawl on some roadways this week.
Four massive metal boxes used to produce industrial gases are being transported from the Ohio River near Cincinnati to a supplier in Middletown, about 30 miles away.
The so-called "cold boxes" measure up to 175 feet long and 19.5 feet high. The smallest weighs 119 tons, roughly the same as a dozen Asian elephants.
The trailer will travel no more than 5 mph and take a roundabout route to avoid highway overpasses and other potential obstacles. It will be accompanied by state troopers and by power company trucks that can raise utility lines to clear the way as needed.
The first two-day shipment starts Wednesday.