Have been using self-support conduit in northern KY and southwest OH since '99 or so. Remember replacing an aerial package that had been torn down across I-75 with it in 2000. Always use it for railroad crossings, interstates, and major state highways. Great stuff until you have to go back through it with an additional cable or fiber, then can be a pain in the butt.
Gary Vest
This is CABL.com posting #337591. Tiny Link: cabl.co/mbzZb