Wikipedia says in 1838 they passed a law designating all current and future railroads as post roads, so it sounds like all the railroad network is.
Added: this is interesting: http://www.fhwa.dot.gov/infrastructure/origin.htm
Last edited by creaker; 8-7-12 at 11:56am.
The postal system seems so obsolete to me. Important papers/checks being delivered and taken away from box by the road. Right like I would still do that Gas powered cars driving from house to house to deliver stuff, when they for the most part could make one stop even on a designated corner for all. Daily trips to each home. Seems like in todays world what does still arrive could be delivered every few days. The rest could be run like UPS or FedEX.
Post service same as a news"paper",obsolete .
I can't remember the last time I put a check for a bill in the mail box. I am lucky the few that ever do arrive like property taxes, sewer bill, I just bike it up and pay. My 80+year old mom, will put a check in the box and wait to make sure it gets picked up. Like it is now is safe hands after it leaves her box.
Another reason to keep the P.O. around is the popularity of their new campaign "if it fits, it ships" using the free boxes the P.O. provides.
Some friends who used to use UPS or FedEx switched to the P.O. and claim it's much cheaper.