looking for info about these trails

i just started riding these trails this week and been there a few times now already but i have yet to see a single other person out there. anyone here still ride these trails? i read  there is teeter totters up by the water tower but i couldnt find them. anyone know if they are still up there and if so where?  i came across some bridges and a long log ride in the lower part that obviously arent used anymore since they had broken and missing boards. anyone maintain these trails cause im planning on going thru and fixing up whatever things i come across over the summer and maybe doing a lil work. i only found one northshore bridge, are there more?