Any tricks for getting a timid pound puppy to walk near roads on a leash?

You might try using a gentle leader http://www.premier.com/pages.cfm?id=29 instead of a neck collar. The pressure on the nose relaxes the dog, and also they're more likely to follow you, because where the head goes, the body goes (at least, it's worked for my dog). Besides that, it just takes time and lots of treats.

treats are unquestionably the way to go. first of all, find out what treats are her favorite. likely possibilities are hot dogs, mild cheddar cheese, or apples. it's important to match the value of the treat to the value of the action performed by the dog... for example, my dog was very reluctant to hop into car by himself, so for a month we only gave him his favorite treat when he was in the car. sure enough, he leaps into the car now happily, even when there are no treats to be had.

next, don't lure with the treats. instead, simply give a treat the very instant the dog moves towards the sidewalk. even one step in the right direction gets a treat. expect this to take a very long time.

next, since your dog is so young, don't train for more than five minutes at a time. do five good minutes, then quit and play around or do something else for fifteen minutes. then back to training.

lastly, my wife is a dog trainer and the only book which she thinks is required reading is "don't shoot the dog." i think it should be required reading for anybody who has pets, children, or has a job requiring him or her to work with other people. basically, everybody should read this book.

treats, treats, treats.

Depending on where you live leave the door open, while you are outside or when you are around the puppy. Curiousness to the door and the outside may get to her, and if she sees you out there she will be more inclined to go out. Showing her lots of love can also help, show her that there is nothing to be afraid of. You are her friend, and she needs to know she can trust you. And of course the treats always help. And if the leash is the problem try letting her wear the leash around the house, in eye site to prevent any accidents. This way she will be used to wearing it, and be more inclined to let you lead her out on it. Good luck, I hope this works out for you. The above answers all sound really good too, so you have plenty of options.