Farmers Bridge Junction doesn't really exist anymore. It originally was where the Newhall branch of the Birmingham & Fazeley headed off. After the Newhall branch was closed the name was transferred to the junction where the canal joined the main line. However later this was renamed Old Turn Junction. The original junction used to be just before the top lock of the Farmers Lock flight, the only bit that remains of the Newhall canal is Cambrian wharf, i guess you could say the junction does still exist but it only links through to a wharf now.