I too have never had an issue with the smaller roads around (or on slightly rarer occasions when I use it, the actual path by) the railway at this point, but I am only normally there during daylight hours, as it so happens. However, I can sympathise with someone who doesn't want to use the footpath at night (I presume this is what you refer to when you say a "dark path"), as it is fairly quiet and even lonely at some times. As for lighting, I'm struggling to remember exactly what it's like.
If you want to do some night-time photography (perhaps you or another member might be after some long-exposure shots on footbridges?) then I would use Worple Road until you are near the bridge you want, then head up there and just stay vigilant. But I wouldn't say it's a major risk, from my personal experiences only.