Sign structures come in 3 different styles; Cantilever, Bridge or Butterfly (“T” shape) and in various sizes ranging from 18” in diameter up to the larger 40” diameter structures.The basic components of any sign structure installation consist of a drilled shaft; rebar cage, bolt assembly, 3000 psi concrete, sign structure and the sign(s) themselves.  Some drilled shafts can reach up to 65’ in depth depending on the terrain and size of the structure.  Anyone who has traveled the interstate systems here in New Mexico has either passed by or gone under a sign structure that San Bar has installed.  Variable Message Systems are becoming more popular across the States interstate system and San Bar is installing the structure for these as well.