Abstract: 2nd true Continuous Flow Intersection in the USA. Left turns from Route 228 have crossover. The crossed over lefts then enter a merge lane because southbound traffic on Indian Head Hwy is free-flowing.
Abstract: Bridge structure, but subjects all approaches to a signal (no "freeway" movements). Functions similar to Town Center Intersection (intersecting couplets), but does so vertically rather than laterally. Good choice when seeking to avoid freeway precedent, and both streets have similarly high volumes.
Won an AASHTO award for innovative design somewhere around 2002.
Abstract: This is one of the strangest intersections ever! Five mini roundabouts inside of a large, awkward traffic circle. Wonder what it looks like at 5 pm? Quite a number of other traffic circles in the general area.