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Published July 29, 2012, 10:03 PM

Hot summer days causing street and sidewalk damage

GRAND FORKS, N.D. (WDAZ TV) - The long stretch of hot weather is taking its toll on some Grand Forks streets and sidewalks.

By: David Schwab, WDAZ, WDAZ

GRAND FORKS, N.D. (WDAZ TV) - The long stretch of hot weather is taking its toll on some Grand Forks streets and sidewalks.

Officials say there are a dozen damaged spots around town.

Mark Aubol, Grand Forks Streets Superintendent: "With the heat we always deal with the concrete pop."

Superintendent of the Street Department Mark Aubol says buckling of streets on hot days it not a new thing. But this summer, where there has been little rain to cool things down, it's definitely brought more of the problem.

Aubol: "When we carry heat into the day and into the night and into the next day, that is what makes the pavement stay at a higher degree."

Aubol says last week the North Dakota Department of Transportation measured pavement temperatures of 120 degrees in Grand Forks.

Aubol: “The pavement is really, really hot, but the ground below it where the road base or even the clay is almost to a boiling temperature. It is so hot underneath there."

The results of that can be a road rise like on 38th Avenue South which happened earlier this month.

Mike Roufs, Grand Forks City Street Department: “It all depends on the heat in there and sometimes we see them just pop right out.”

Aubol: "You might notice a little bump, a little heave starting and then within two to three hours it can be sticking out of the ground."

Low riders beware. On at least half a dozen of identified sidewalks, the buckling demands a higher clearance.

Because city crew and contractors are tied up with summer time projects, damaged side walks like one on 34th Avenue South will have to wait until later this fall before it will see repairs.

Aubol: “We will take a cement saw and we will take a little bit of it out and get it back down so it is just a gradual bump more so than it is a ramp."

Aubol says until they have time to make the repairs, the city will try to mark the most serious buckling with signs and cones to help everyone steer clear of an expected jump.

Asphalt roads don't buckle but are more prone to softening in the heat.

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