Just a question first. Why do you want a conventional for bridge work? I have used spinning gear for years and have had no problem. If you are seriously thing conventional I would go for something that you can cast from the surf as well.
Abu Garcia 4000 or 5000 series reels will work great, cast well and will allow you to crank to the height of any bridge or pier.
If you are going to pigeon hole your outfit you will be loosing out on a great fishing experience.
Happy Catching
Paul