From Chattanooga: I-75 South to exit 333 (Walnut Avenue). Turn left at the top of the ramp. Continue on Walnut Avenue for approximately two miles to the intersection of Thornton Avenue. Turn left on Thornton Avenue and continue straight for approximately 1 mile - the courthouse is a large marble structure on the corner of Thornton Avenue and West Crawford Street. From Atlanta: I-75 North to exit 333 (Walnut Avenue). Turn right at the top of the ramp. Continue on Walnut avenue for approximately two miles to the intersection of Thornton Avenue. Turn left on Thornton Avenue and continue straight for approximately 1 mile - the courthouse is a large marble structure on the corner of Thornton Avenue and West Crawford Street.