by Leanan » Mon 09 May 2005, 13:07:04
$this->bbcode_second_pass_quote('', '.')..I seem to recall numerous reports that the national highway system is degrading rather badly, and has been for some years. Interesting, is it not, that the system was built and finished...but we can't even maintain it anymore.
Very true. I think you see "diminishing returns" at work there.
Our interstate system was built in the 1950s and 1960s. It was designed with a 30-40 year life. Back then, we never imagined that one day, we wouldn't have the money to replace it all. You should see the plans from that time. A lot of them were built "to grow on," with provisions made for extra bridges and the like, somewhere down the line.
Someday never came. Our roads are now carrying loads they were never designed to carry, much longer than they were supposed to carry them. Women went to work, basically doubling the traffic load. And trucks are now humongous, much heavier than '50s engineers imagined.
But we don't have the money to replace the highway system. Our economy hasn't boomed like it did back in the '50s, so we don't have that kind of money. Plus, the traffic load and crowding mean it's much harder to close the roads down to maintain them, or build new ones. Back in the '50s, the highway plans show chicken coops and apple orchards as roadmarks. Now, we'd have to take out a few subdivisions to build a new highway.
So no, you aren't imagining it. We were supposed to replace the highway system completely by now.