7. US Route 20
Length of highway: 3,364 miles (5,415 kilometers)
The highway which overtook US Route 6 for the longest highway in the nation, US Route 20 is a coast-to-coast highway that starts from Massachusetts and ends up in Oregon.
Length of highway: 3,364 miles (5,415 kilometers)
The highway which overtook US Route 6 for the longest highway in the nation, US Route 20 is a coast-to-coast highway that starts from Massachusetts and ends up in Oregon.
