If you are the defender and have a ranged AE ability you can cast it across if you stand in the center and reach some people but the bridge cap device . It's a dangerous endeavor though since if you stand out there enemies can jump across to you.
No, wrong area.
I'm talking about the pinkish force field controls PASSED the 2nd doors (the 2nd doors are after the bridge controls, the bridge controls are after the 1st doors). Until those force fields are down, no one is supposed to be able to shoot or move through them.