Does soil type under and around a bridge matter if its found

Does soil type under and around a bridge matter if its foundation touches bedrock?

Solution

No. It does not matter. Because the bridge is supported by cassions or piers. And these cassions or piers transfers the load from the bridge to the soil below them. The foundation touches bedrock means cassions or piers transfers the load to the bed rock. The strength and stability of the structure is bed rock only. so, soil type under and around a bridge does not matter.