Hundreds of people from 20 units worked non-stop for 10 hours to transport the first section of the Thu Thien underwater tunnel to the site.
The section was 27,000 tonnes worth of concrete and traveled 22km down the Saigon river.
Below are some photos of the transportation on March 7.
Workers perform final checks before 5am departure
Leaders excited for the transportation
The press was kept busy reporting the transportation to readers
Departure shot was fired at 7.40AM
Transportation begins
This boat is in the forefront
A helicopter roams above to film the transportation process
A towboat from Thailand
A back-up pushing boat from Vietnam
Transportation team
Engineers were ecstatic with the successful transportation
Thousands of people observe
The section arrived at the site and prepared to be sunk