Trying to catch a dog...(dachshund)

There's been a little dachsund (sp??) hanging around the perimeter of our office building for about 2 weeks. He stays on the other side of the fence most days sitting in the sun along the grassy bank of the drainage culvert away from the view of the busy road and away from the interstate. He (or she, I can't get close enough) won't come to you when you call, and runs when you try to approach it. When it is approached, he runs into the drainage culvert and through it (under one of the busiest roads in Norman) and comes out across the street at the hotel. I spent Saturday chasing him from one side of the culvert to the other (having to drive around to both sides of the street) just so I could possibly feed him. He doesn't have any tags on. The sad part is almost every day he is in the same spots along the drainage culvert sunning himself and hiding amoung the weeds/sunflowers. He looks to be healthy but I worry about him. It's starting to get cold at night (down in the mid 30's) and yesterday we had a strong north wind all day making it feel colder than it actually was outside. Kaitlyn and Michael have both searched around my building but haven't had a siting of the dog. Joe has even come and looked and tried to catch him. It's going to take the whole family to split up and get on both sides of the drainage culvert to nab him, I think. I'm such a softie when it comes to dogs. For someone that was deathly afraid of dogs as a child, I have such a connection to them. I can usually get a dog to come to me, but this one is really elusive and apparently afraid of humans. I don't know where he's sleeping at night or if someone is feeding him but I hope the dog catcher doesn't catch him or that he doesn't eventually try to cross the interstate - that would mean certain death. I hope his owners, if he even has any, get off their ASS and take care of him. I'm still patiently waiting. If I can catch him, he's coming home with me.