I’m usually good at deciphering my dreams but this one I have no idea - so a lot happened in the dream I can’t remember but one part sticks out for me:

I was travelling across a bridge in the sky (which was a beautiful blue with white clouds); I was in a cart and the bridge was made of silver type of track like when you board a roller coaster ride; the bridge itself was heading towards a huge old school yellow factory with one set of double doors and a few small windows on it but it was very tall and very wide across the whole horizon

The whole scene felt very familiar; the “factory” and the bridge in the sky.

Halfway across the bridge I fell of the bridge along with the cart but from memory I didn’t feel scared or worried, I just felt emotionless. I feel as though there could be meaning behind it.

Also at some point in the dream I saw a slug amongst kitchen plates.

TL;DR fell off familiar bridge heading to a factory in the sky.