Quote:
Originally Posted by ATLswede
Nevermind, I just saw the picture and saw the wooden power lines coming out of the middle of the sidewalk. You're both right. Why on earth wouldn't they bury those???
|
They probably will be replacing the old wooden poles with the new poles being installed. There's a valid reason why they don't want to bury the existing utility lines: so they will not have to install cathodic protection equipment. Often water and sewer lines are moved away from light rail or streetcar lines for this very reason.
More information on cathodic protection:
http://en.wikipedia.org/wiki/Cathodic_protection
All metals will rust in the ground unless they are protected. Copper, aluminum, and steel are all metals. The electric currents used to run streetcars and light rail vehicles will effect the corrosion rates of metals nearby, unless they are protected. That protection costs money!