I recall my Dad saying that one of the railway lines that ran through Jarrow, past the end of Beech Street was known as the Pontop Line, or Bowes-Lyon line.
A snippet of family history: my grandad retired from the railway (he was a driver) but used to visit the signal box there, taking a mash-can & scones, to chat with old mates.
One day, as he exited the box, he was run over by a shunter, lost both legs, & died. That was in 1935.
By a strange twist of fate, his wifes' sister suffered exactly the same fate, in about 1910, she had been scavaging for coal that had fallen from wagons, near the rails. The wagons were being shunted, she slipped under the wheels, both legs fatally crushed!