The road to the bridge is residential next to my street, but is mostly woods and light industry for the rest of it's length. There are no streetlights in that section, just exterior lights on some of the buildings, so it's frelling dark, and even a bit spooky. Fortunately there's rarely any traffic, so I can just walk down the middle of the road like I own it. There was a streetlight on the other side of the bridge, but it seems to be dead now, so it's pitch black near the bridge.
The only real problem is that walking alone out there in the dark is that it gives me way too much time to think about stuff. This is especially true if I'm obsessing about something. My imagination can really run riot if I've got nothing else around to distract it. That's usually not a good thing, because at some point I'll realize that all the good stuff I've been imagining will most likely never, ever, come to pass, and I get so depressed.