The Soleil-Interruption Interchange as it exists today, was built in 2003, is one of the world's busiest junctions on two of South Blix's (and the world's) busiest roads: Soleil Boulevard (east-west) and Interruption Street (north-south). It is one of the few interchanges that exist between city streets at a freeway-configurtion.
The original interchange was built as a four-level interchange in 1957. In 1986, the interchange was closed because it was considered unsafe, instead motorists were forced to go to the Ohtalay-Interruption interchange, or use a signal light intersection that had been temporarily constructed. Due to this, the traffic in this end of the city became absolutely unbareable, and everything suffered as a result: tourism, employment, quality of life, etc.
In 1998, construction began on a massive new underground interchange, as the previous interchange had been completel destroyed, and new buildings had arisen over where the interchange was, so no room was available for a new interchange to be built, after massive public demand and demonstrations. Essentially, exits would be created wherever they could build them, and the traffic that wanted to change roads could use this new underground interchange, which is one of the world's largest interchanges in terms of area. The technical layout of the interchange is very complex, and signs are posted all over the roads in order to have a seemless interchange.
Now, only a double-decked bridge goes over the interruption street, instead of an intersection with the street. The Soleil Blvd.'s new lower-level carries through-way traffic, and the upper-level carries commerical traffic, each level carrying eight lanes. In 2012, Interruption street was painfully expanded from six lanes to fourteen lanes. This was accomplished by destroying the Interruption Park, and replacing it with asphault.