In Utah, Riley joins a crew of more than 300 engineers, contractors and laborers as they gamble on an innovative installation technique: demolishing a crumbling concrete bridge and installing a new throughway bridge in just four days (WTF!). This fix involves huge remote-controlled trailers, enormous hydraulics, and a 4 million-pound, five-lane bridge that must be transported almost two miles before it is installed in one piece on Interstate 80 in Salt Lake City.

在犹他州，赖利加入了300多名工程师、承包商和工人的团队，他们赌上了一种创新的安装技术:在短短四天内拆除了一座摇摇欲坠的混凝土桥并安装了一座新的公路桥(WTF！).这种修复包括巨大的遥控拖车、巨大的液压装置和一座400万磅的五车道桥梁，必须运输近两英里才能在盐湖城的80号州际公路上完整安装。