MetroNet is working in the downtown Zionsville area and on Mulberry St., near Pine Meadow Drive. The company also is constructing in northeast Zionsville, east of 421. The crews should cause little, if any, traffic disruption. Residents will see a series of messages before construction activity begins in their neighborhood, including a letter, postcard and yard marker. Next, they will see crews identifying underground utilities and marking their locations with temporary paint. In the following days, MetroNet contractor teams will begin building the fiber optic network.