Here are some more specific terms depending on the type of support:
* Abutments: These are the massive structures at either end of a bridge that hold the bridge deck in place. They are often made of concrete or steel.
* Piers: These are the intermediate supports that hold up the bridge deck between the abutments. They can be made of concrete, steel, or even stone.
* Retaining walls: These are walls that are built to hold back soil or rock, and they are often used to support roadways that are built on slopes.
* Culverts: These are pipes or tunnels that allow water to flow under a road. They can be made of concrete, metal, or plastic.
The specific terms used to describe roadway supports will depend on the type of road, the type of support, and the location.