I have a bridge that no one can cross. I sometimes run, but never walk. Im plain to see, right there in the middle. Can you answer this riddle?

A magazine with a high number of bullets. I am also used to store harmful chemicals. I can often be found in marching bands or be used to intimidate my enemies on the battlefield.

Cut off my head to see something to scale. Cut out my neck to make me much worse. With neither I'm in borrowed burrows through winter. Constant refilling is my miserable curse.

On the beach, I erase the day's damage and make all things new, In your laundry room, I do the same thing to your clothing, too.

Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters.