Big anniversary for the Lafontaine tunnel

A big milestone for the Lafontaine tunnel.

It's 50-years old.

It was inaugurated on March 11th, 1967.

More than 120,000 motorists take it daily to either go to the south shore or come from it by crossing the Saint Lawrence river.

It took four years to build without interrupting maritime travel.

The cost was $75,000,000 dollars.