![Concrete pour for bridge pylons marks next step for the Mersey Gateway Project | The Mersey Gateway Project Concrete pour for bridge pylons marks next step for the Mersey Gateway Project | The Mersey Gateway Project](https://merseygateway.co.uk/wp-content/uploads/2015/08/Mersey-Gateway-cofferdam-concrete-pour-visualisation-1024x562.jpeg)
Concrete pour for bridge pylons marks next step for the Mersey Gateway Project | The Mersey Gateway Project
![The “cofferdam technique” is used for building the foundation for a bridge. In this method, a wall enclo… | Unbelievable facts, History facts interesting, Fun facts The “cofferdam technique” is used for building the foundation for a bridge. In this method, a wall enclo… | Unbelievable facts, History facts interesting, Fun facts](https://i.pinimg.com/736x/94/53/c4/9453c4c6c6e14561ded8eeeb7f89af43.jpg)
The “cofferdam technique” is used for building the foundation for a bridge. In this method, a wall enclo… | Unbelievable facts, History facts interesting, Fun facts
![One of the four cofferdams, the tidal river ment that the dam had to be pumped out before the next stage of the foundation was started Stock Photo - Alamy One of the four cofferdams, the tidal river ment that the dam had to be pumped out before the next stage of the foundation was started Stock Photo - Alamy](https://c8.alamy.com/comp/P676AN/one-of-the-four-cofferdams-the-tidal-river-ment-that-the-dam-had-to-be-pumped-out-before-the-next-stage-of-the-foundation-was-started-P676AN.jpg)
One of the four cofferdams, the tidal river ment that the dam had to be pumped out before the next stage of the foundation was started Stock Photo - Alamy
![I've been in cofferdams surrounded by ground, but being in one surrounded by water is almost too unnerving. : r/civilengineering I've been in cofferdams surrounded by ground, but being in one surrounded by water is almost too unnerving. : r/civilengineering](https://i.redd.it/w5wxs0pbw0j91.jpg)
I've been in cofferdams surrounded by ground, but being in one surrounded by water is almost too unnerving. : r/civilengineering
![BAY BRIDGE CHRONICLES / Piling it on -- loudly / Work on new span's foundation about to enter noisy next phase BAY BRIDGE CHRONICLES / Piling it on -- loudly / Work on new span's foundation about to enter noisy next phase](https://s.hdnux.com/photos/10/17/10/2159135/8/1200x0.jpg)