A lot! Infrastructure Rehab USA, (the Texas licensed contractor), is busy with Triplex Liner installations and manholes are being transformed daily. Several hundred manholes have been completely rehabilitated over the past two years and 71 more are currently being restored. The project will be complete within a month.
Before and after photos of one of the Plano, Texas manholes. There is severe deterioration. After the Triplex Liner is installed the manhole is better than new.