Truly massive and impressive 66kv (or possibly 34.5kv?) tower seen here with seven three-phase circuits! I have always been highly impressed with this architecture having seen lines of this sort on TV shows and in movies filmed in the LA vicinity. The other structures are double circuit 115kv and/or 138 kv. I believe Southern California Edison owns the 66kv lines and possibly the higher voltage lines that you see here. To this Easterner it is sometimes difficult to tell even with a fair amount of electrical utility experience...