Bridge construction, highway construction, flag zone: Flag zone to maintain and control traffic during repair of pavement on one lane of two lane highway/bridge. Oncoming traffic has been stopped so our traffic can use the oncoming lane. After traffic in our direction has traversed traffic zone, additional traffic in our direction will be stopped, and oncoming traffic in this lane will traverse zone. This reversing cycle continues until repair is completed and two lane traffic can resume. Netting on right protects river and shipping from possible falling debris from work zone. Bridge on US 197 across Columbia River between Oregon and Washington at the Dalles, 2005.