How build in brige pillar foundation in sea?

Building a bridge pillar foundation in the sea typically involves several key steps. First, a detailed site survey is conducted to assess underwater conditions and soil stability. Then, specialized equipment, such as barges and drilling rigs, is used to install deep foundations, often using concrete piles or caissons that are driven or drilled into the seabed. Finally, the pillars are reinforced and connected to the bridge structure, ensuring they can withstand environmental forces like waves and currents.