Yeah there are a few colubrids that get over 10 ft. I have two babies that will get over 10 ft, a tiger rat and a blue beauty. I wouldn't count on them being sweetheart adults though. Both of these were born in summer 07.
Other colubrids that get over 10 ft are Ptyas carinatus (keeled rat snake), Drymarchon corais (yellowtail cribo), Pseustes sulphureus (giant bird snake), etc.
John