May 26, 2009 6:40 pm US/Central
Pavement With Holes, And We're Not Talking Potholes
SHOREVIEW, Minn. (WCCO) ―
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The Shoreview Public Works Department will lay down about a mile of pervious concrete, pavement that allows water to run right through it.
CBS
The city of Shoreview is trying to control storm water without gutters, sewers or collecting ponds but with some creative concrete.
The city's public works department will lay down about a mile of pervious concrete, pavement that allows water to run right through it.
The neighborhood where Shoreview wants to try the new pavement currently sends storm water to Lake Owasso. That run-off is polluting the lake. There is no room in the area for a settling pond, so the special pavement may be the answer.
"The pavement itself is 7 inches of this pervious concrete. And below these 7 inches of concrete is about 2 feet of very large rock, a layer of large, I think, railroad-ballast-size rock. And that is the layer where the water collects," said Shoreview City Engineer Mark Maloney.
The city says ice will not form in the pavement in the winter because there will be no water there to freeze. A special vacuum street sweeper will keep the pervious pavement from plugging up with dirt.
(© MMIX, CBS Broadcasting Inc. All Rights Reserved.)
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