Same thing up here in Canada.
The CN rail mainline has sagging sections (missing poles) and completely missing spans coming into my city.
On the other hand CP rail's mainline has gone underground west of the city and to the east they are using a telephone system style overhead cable attached to the old telegraph poles. All the old open wire system has been removed from those poles.
Both railways also have fibre along side their ROW as they were partners in a alternative long distance provider before selling out.
I wonder why the railways are not out reclaiming the copper or selling the rights to a salvage company at the current price?
And let's not forget the posting from 2003 with the unusual things found on railway poles.http://www.electrical-contractor.net/forums/ubbthreads.php/ubb/showflat/Number/114362/page/0/fpart/1