Vandalism along Chattanooga's Riverfront causes ten-thousand dollars in damages to the Market Street Bridge.
The span has been closed since 2005 for renovation.
Mountain States Contractors has put up a one-thousand-dollar reward for information leading to the arrest of those responsible for damaging the bridge three times in the last four months.
The latest vandalism involved setting a porta-let on fire.
It melted and broke the concrete on the bridge deck.
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