. Most interstate highways in the United States cost just over $1 million per mile to build (Grossman, 1996). In 1996 dollars, the Federal Highway Administration has calculated the "weighted rural and urban combined" costs per mile of interstate highway to be $20.6 million.(9) Other highway construction normally ranges from $1 million to $5 million per mile, but in mountainous regions, like West Virginia, the costs can be as high as $15 million per mile (Brogan, 1997). The costs per highway mile in the expanding Los Angeles metropolitan area for four Ventura County projects were $1.7 million, $2.1 million, $2.4 million, and $2.9 million respectively (Green, 1996).
To so res highways, se prav 4 in več pasovnice.