Long time and unlimited resources is usually the way to go. Sure machinery would make it fast, but you can get 10 guys to hammer for 2 years to drive it. Then move on. Even today it’s a huge logistics and financial problem to build bridges which is why typically it’s always governments that did it.
The machine that shows up about 3 seconds in looks to me like a manual piledriver, uses pulleys and cranks yo pull the weight up, then just gravity to drop it down the track.
But like… how did they even do the first step of ramming the wood piles into a deep ass river without big machinery of some kind?
Long time and unlimited resources is usually the way to go. Sure machinery would make it fast, but you can get 10 guys to hammer for 2 years to drive it. Then move on. Even today it’s a huge logistics and financial problem to build bridges which is why typically it’s always governments that did it.
The machine that shows up about 3 seconds in looks to me like a manual piledriver, uses pulleys and cranks yo pull the weight up, then just gravity to drop it down the track.
Sledgehammers (or similar) and lots and lots of manpower I’d guess. It’s how they made it watertight before they drained it I’m interested in
The weight of the water will push wooden pilings together. The flow of water though the gaps will also bring mud and debris into the cracks.
It’s not perfect, and would need a lot of pumping/water removal, but it’s just a case of manpower, at that point.