Perhaps surprisingly, there are at least three short factory spurs off the old New Haven Railroad main line Between Bridgeport and New Haven, Connecticut (17 miles and now operated by Metro-North Commuter Railroad) that are still in use. I often see boxcars on two of them (one delivering wood products) and another with five or six hopper cars removing trash off a short wye. It is interesting to see fallen flag road names on the boxcars and the ownership reporting marks on the hoppers.
MELGAR