Hehe, fitting name for an old stone bridge i guess, here's a bridge model i made in just a few days, it overhangs over the lot, and crosses a 2 tile long gap, be aware that it WILL take some precission and time to place this correctly.

Dependancies:

You will need this for the gravel path approaching the bridge.
https://community.simtropolis.com/files/file/13100-meandering-bike-paths/

Have fun now!   Mod Edit: Fixed dependency link.