A section of a concrete pillar known as a tetrapod fell on the shoulder of South Tacoma Way around 2 p.m. today. This occurred during demolition activities on the Interstate 5/State Route 16 Eastbound Nalley Valley project. A safety buffer was in place, per standard practice, at the time. Traffic was safely rerouted around the construction zone. No one was injured. The fallen tetrapod, one of many that held up the old Nalley Valley bridge, ruptured a water line. A natural gas line is suspected to be compromised. Utility and emergency responders are on the scene to ensure safety. Washington State Department of Transportation and contractor Mowat Construction have stopped demolition pending a thorough review of the operation.