CAMBRIDGE (CBS) – The Massachusetts Avenue bridge was temporarily shut down Thursday because of a fire at a homeless encampment on nearby Storrow Drive.

Smoke billows from a fire on Storrow Drive near the Mass Ave. Bridge. (Image Credit: @Maggikelsey)

Video from a driver in the area showed black smoke billowing above the bridge along the Charles River.

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No one was injured. The bridge was closed to traffic for over an hour.

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State Police were concerned the heat from the fire could have compromised some of the concrete on the bridge and they wanted it inspected.