Help with a prompt

hey, i need to make a model of a bridge for 3D printing, i dont know if its to complicated, but i need to make a prompt of it and i didnt succeed. i added a picture of the instructions and i will be appreciate if someone can help me. thanks!

Hey there,

If you have experience in CAD, it can be better to describe objects by their CAD operations instead of their name. For example, instead of "a bridge with … ", you can try “create a bridge that is extruded by 7 inches that lives on a __ inch radius. The end caps should extend flat by __ inches.” Hope that helps get you started.