The US 89A Box Culvert Extension project is widening five box culverts within an eight-mile segment of US 89A near Vermillion Cliffs (milepost 540 – 548). This project is expanding these drainage facilities in preparation for a future roadway improvement project in the area. All work will be performed within ADOT right-of-way and is anticipated to be completed summer, 2017.
Motorists traveling along US 89A near Vermillion Cliffs will encounter two temporary traffic signals to allow for alternating lanes of travel while the box culvert extension project is underway.
The temporary traffic signals are in place at all times and will be moved from west to east within the project limits as construction progresses. There is potential for stop-and-go traffic along US 89A at the signal locations. A 12-foot width restriction also is in place.
ADOT works to inform the public about planned highway restrictions and closures, but it’s possible that unscheduled impacts might occur because of weather or other factors. For the most current information about highway conditions statewide, visit ADOT’s Travel Information Site at www.az511.gov, follow ADOT on Twitter (@ArizonaDOT) or call 511, except while driving.