The Main Street Transitional District (MSTD) is located adjacent to the north and south ends of the Main Street District described above. At the south end, the MSTD begins at El Segundo Boulevard and ends at Grand Avenue (100-200 blocks); at the north end, it includes the one block area between Pine and Mariposa Avenues (500 block). (Photos 22, 23, & 24)

Photo 22 – Main Street Transitional District

Photo 23 – Main Street Transitional District

Photo 24 – Main Street Transitional District
These blocks are transitional in character and include institutional, light industrial and residential uses and parking, as well as some limited commercial uses. They do not have the feel and character of the core of Main Street and so they should serve as visual transitions into and out of Downtown. Immediate standards include:
- Street Trees -
These blocks of Main Street should place street trees at a spacing of 40 feet on center. Street trees should be the same as those in the Main Street District, but may be mixed with other appropriate trees.
For future long-term change, streetscape and urban design features similar to those proposed for the Main Street District (i.e., pedestrian amenities) are recommended for these transitional areas.