Have you seen this rendering?

It is the megasized symmetrical stack interchange currently under construction at the eastern junction of Interstate 95 and 695 at Baltimore, Maryland! Construction began in 2006 on a multi-year project that will bring express toll lanes to the busy corridor. Presently Interstate 95 carries eight lanes between Interstate 895 and Maryland 24 (Exit 74). This project expands the overall lanes to 12 with the addition of four express lanes (two per direction) from the merge/split with Interstate 895 to Gunpowder Falls State Park east of Exit 67. Project completion is slated for 2011.

See the project site – http://www.i-95expresstolllanes.com/ for details