Did old streetcar/interurban lines ever connect up to or share the main freight lines, or were they entirely independent? If they weren't independent, could they have been used for freight spur lines?

>>2045596 (OP)
Some did, like the Pacific Electric did a lot of interchange with railroads, and some systems continued as freight haulers after passenger service ended.
In general though, interurbans were a separate entity, with their own freight cars , specializing in smaller loads and more local service rather than bulk commodities. In Pennsylvania, street railways had to use a broad gauge track just to keep steam trains and long freights off the street.

>>2045624
By the way, pic related IS hooked up to the main line (would require backing up and re-backing up) as well as Memphis. Something like Galveston or Dallas (heritage trolleys installed later) aren't.

>>2045596 (OP)
The issue is that two rails use to much space for inner city traffic, I suggest using a monorail sorta like bike paths maybe under them like a mini metro system

With individual electric cars who will use less electricity space and can move faster

>>2048183
Shut the fuck up

>>2045624
>street railways had to use a broad gauge track just to keep steam trains and long freights off the street.
every time i see this explanation, i picture massive freight trains and their crews slowly passing near street car tracks, frowning and flipping off any nearby streetcar and thinking of ways they could get onto the streetcar network, block off all streetcar depots and ram all remaining streetcars off the track, establishing the city as freight train territory