Just up the street from my place - an older 69kV suspension line with a 13.8kV distribution circuit down below (and which was originally a 23.9kV transmission circuit for several towns west of Sioux Falls). This is the only pole along this segment that still has insulators that are correct for 23.9kV; the rest of this leg has had the insulators replaced with bowl types for 13.8kV or posts for 34.5kV (both voltages are used on different parts of this old circuit).