Top 5 Longest Tunnels in the U.S.

When you’re outside of the longest tunnels in the U.S., you can’t help but wonder how they were built. When driving through them, you hope they were built well. Both engineering marvels and logistical nightmares, tunnels provide transportation through mountains and rivers that once stood as boundaries to human advancement. Requiring the highest levels of both brains and brawn to build, tunnels are the arteries that connect America.

 

Here are the top five longest tunnels in the U.S.: