In addition to other authority that a cultural arts, stadium, and convention center district possesses, a cultural arts, stadium, and convention center district may provide any public improvement as defined under RCW 39.89.020, but this additional authority is limited to participating in the financing of the public improvements as provided under RCW 39.89.050.

This section does not limit the authority of a cultural arts, stadium, and convention center district to otherwise participate in the public improvements if that authority exists elsewhere.