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. Traffic in our direction has been stopped so oncoming traffic can use the oncoming lane. After traffic in oncoming direction has traversed traffic zone, additional traffic in that direction will be stopped, and traffic in our lane will traverse zone. This reversing cycle continues until repair is completed and two lane traffic can resume. Bridge on US 197 across Columbia River between Oregon and Washington at the Dalles, 2005.