Interstate 15
...that the 30-mile (50-km) section of Interstate 15 in Arizona through the Virgin River Gorge was the most expensive section of rural freeway by mile?
...that the 30-mile (50-km) section of <b id="mwC8o"><a href="./Interstate_15_in_Arizona" id="mwC8s" rel="mw:WikiLink" title="Interstate 15 in Arizona">Interstate 15</a></b> in <a href="./Arizona" id="mwC8w" rel="mw:WikiLink" title="Arizona">Arizona</a> through the <a href="./Virgin_River_Gorge" id="mwC80" rel="mw:WikiLink" title="Virgin River Gorge">Virgin River Gorge</a> was the most expensive section of rural freeway by mile?