Transmute Ladder / Bridge

You create a ladder or bridge with a length of 15 feet that you can use to traverse the environment. The constructed ladder / bridge can hold up to 500 pounds of weight, and will break if anything heavier than 500 pounds is placed on it. It has an AC of 10 and is immune to poison and psychic damage. Any creature can use the ladder / bridge as part of their movement, but only the creature who casted the spell can pick up or move it, as the ladder / bridge will be firmly fixed in place if anything else attempts to move it. The ladder / bridge will remain summoned for a maximum of 1 day unless the caster chooses to dispel it early. Once a full 24 hours has passed, it will disintegrate and vanish, leaving behind a small pile of sawdust.  

At Higher Levels. When you cast this spell using a 3rd level spell slot or higher, you can increase the length of the ladder / bridge by 5 feet and it's AC by 1 based on the level of the spell slot you used to upcast it. (EX: If you spend a 5th level spell slot to cast this spell, the length of the ladder / bridge will increase to 30 feet and have an AC of 13. It's weight will remain consistent however, and the caster of the spell can easily pick up the ladder / bridge regardless of how large it is.)