Excessive heat in Missouri might cause pavement problems

Monday, June 21, 2010 | 8:43 a.m. CDT

HANNIBAL — The Missouri Department of Transportation says the excessive heat that's hit the state could cause road damage.

MoDOT says roadways have already begun to buckle in parts of Missouri since the sweltering weather arrived last week. For the rest of this week, the forecast calls for high humidity and temperatures in the 90s in most of the state.

MoDOT says pavement buckles when moisture builds up under weakened joints, then heats up and expands.

The agency says motorists should drive cautiously on roadways where buckling has occurred.

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