The first underwater tunnel for cars had to solve a seemingly impossible, life-or-death challenge: build a tunnel with enough ventilation to prevent it from becoming a deadly gas chamber.
Aired:07/23/18
10 that Changed America is made possible, in part, by The Joseph & Bessie Feinberg Foundation. Major funding is also provided by Joan and Robert Clifford, The Walter E. Heller Foundation, and other generous supporters.