Which tunnel on Route 17 runs underneath the Hudson River?
Lincoln Tunnel The Lincoln Tunnel is an approximately 1.5 mi set of three tunnels under the Hudson River, connecting Weehawken, New Jersey and Midtown Manhattan in New York City. An integral conduit within the New York Metropolitan Area, it was designed by Norwegian-born civil engineer Ole Singstad and named after U.S. President Abraham Lincoln. It is one of two automobile tunnels built under the river, the other being the Holland Tunnel. In 2016, the Lincoln Tunnel carried a daily average of approximately 52,632 motor vehicles (or 19,210,919 for the year).
St. Clair Tunnel The St. Clair Tunnel is the name for two separate rail tunnels which were built under the St. Clair River between Sarnia, Ontario and Port Huron, Michigan. It was the first full-size subaqueous tunnel built in North America. (By full-size it is meant that it allowed a railroad to run through it.) It is a National Historic Landmark of the United States, and has been designated a civil engineering landmark by both US and Canadian engineering bodies.