The chart above shows road lengths per thousand people in EU and US regions.  With the exception of the Northeastern US, every single US region bests every single EU region in this metric.  The Northern EU is the only EU region to rank higher than a US region.

The chart above shows road lengths per thousand people in EU regions.  The Northern EU has nearly double the length of roads per person that the Eastern EU has.

The chart above shows road lengths per thousand people in US regions.  The Midwest has more than triple the length of roads per person than the Northeast has.

The chart above shows road lengths per thousand people in EU and US states.  The top ten states are all from the US with the leading EU state in this metric showing up 12th.

The chart above shows road lengths per thousand people in US states.  The Dakotas are the only two states that have over 100 miles for every thousand inhabitants in their states.  Additionally, the top 12 states all are from west of the Mississippi.

The chart above shows road lengths per thousand people in EU states.  The Baltic states dominate in this metric as they have more roads per capita than any other state in the EU.  Meanwhile the Southern EU only has one state in the top ten and that is in the tenth spot.

The chart above shows the miles of roads per square mile of land in EU and US regions.  Only the Western EU has more than three miles of road for every square mile of territory.

The chart above shows the miles of roads per square mile of land in US regions.  Only the Northeast has more than two miles of road for every square mile of territory.  For comparison, a typical Manhattan square mile has approximately 25 miles of roadways.

The chart above shows the kilometers of roads per square kilometer of land in EU regions.  The Northern EU, with its vast expanses of land, is the least paved region per square kilometer.  It is also the only region that has less than half of a kilometer of road per every square kilometer of territory.

The chart above shows the miles of roads per square mile of land in EU and US states.  New Jersey, which has the dubious distinction of being a series of roads connecting New York to Pennsylvania, is the most paved state in the US but even it is no match for the Netherlands, Belgium, and Malta which are the most paved states in both the EU and the US.  Malta, which is essentially a city-state is the most paved having nearly three times as many roads relative to its territory as New Jersey has.