В среднем по США так —

Двухполосная в деревне и в городе —

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Nonetheless, here are the daunting numbers: constructing a two-lane, undivided road in a rural locale will set you back somewhere between $2 and $3 million per mile — in urban areas, that number jumps to between $3 and $5 million. In a rural area, you can essentially build a road wherever you please (local zoning and property laws abiding), but in a city, you have to avoid the surrounding firmament and infrastructure and comply with strict construction codes.

And remember, these are cost models — actual expenses can certainly rise far beyond these estimates.

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Четырёхполосный хайвей с разделением —

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And if you want wider roads, the costs understandably go up: for the production of a 4-lane highway, the cost per mile will run between $4 and $6 million in rural or suburban areas, and between $8 to $10 million in urban areas. For a 6 lane interstate highway, you’re looking at $7 million for a rural mile of road, and $11 million-plus in an urban locale.

Again consider the 4.09 million miles of navigable roadway, and you can start to paint a picture of the truly massive expenditures at hand.