If you're coming from LaGrange just go to West Point get on Alabama 50 in Lanett through LaFayette to Camp Hill where you get on US 280 toward Dadeville and then turn left onto AL 63 at the giant US flag in Alex City.
For a short cut, when you top the hill coming up from the Tallapoosa River Bridge at Flint Hill Church take Coven Abbott Highway south at the sign for Wind Creek Park. Keep on CA Highway past the entrance to Wind Creek until it dead ends into AL 63 at Mount Zion Church. Go left on 63 for about 8 miles to K Bridge.
This way will save you a couple of hours by not going all the way to Tallassee.
Kowaliga Bridge is on Alabama 63 twelve miles south of Alexander City. Go over the new Kowaliga bridge and take the first right and you will see Russell Marina on your left, Church in the Pines on your right and a barracade straight ahead. Park at the Church, gear up and enter to the left of the barracade.
Go straight out until you hit about 25 feet and bear right. You will intersect with wooden bridge rubble. Bear north on the wooden rubble and you will find the concrete roadbed. We usually go out with the rubble on our right, cross-over and come back with the bridge on our right. Look closely in the Christmas trees for thousands of bass fingerlings and the occasional sleeping catfish. If you see something that looks like a blob of floating snot focus on it for it might be a freshwater jellyfish. That big thing - no its not a Tarpon, just a stripe.
You will need a dive flag or you will most likely get a ticket. You will also need to bring all the breathing gas that you think you will need because there is no place to get fills.
Have lunch at Sinclairs on the point. Just be wary of AUCade and the clan. They are totally a wonderful bunch of folks who will overwhelm you with enthusiasm.
If you choose to stay the night there is camping at Wind Creek and inexpensive motels in Alexander City. (My home town)