Traffic Alert - Grant Road Improvement Project Phase II Stone to Park - Northbound Stone Avenue Weekend Closure at Grant Road - Through Travel Prohibited at Grant Road

Through travel on Stone Avenue at Grant Road will be prohibited beginning at 7 p.m. on Friday, October 20, 2017 through 4 a.m. on Monday, October 23, 2017.

Northbound Stone Avenue will be open to local traffic at Drachman Street. No through traffic will be permitted at the Grant Road intersection. The designated detour route for northbound traffic will be eastbound and westbound on Drachman Street; however, local traffic needing access to residents and businesses in the area will be permitted to travel north on Stone Avenue to Sahuaro Street.

Southbound Stone Avenue through traffic at the Grant Road intersection will not be permitted. Motorists will be required to turn east or west at the Grant Road intersection. The designated detour route for southbound through traffic will be eastbound and westbound on Glenn Street.

The closure will allow crews from Markham Contracting, under contract with the City of Tucson Department of Transportation (TDOT), to install an underground storm drain system at the intersection, as well as new water lines and new manholes.

Eastbound and westbound travel on Grant Road at Stone Avenue will be permitted, but travel is reduced to one-lane in each direction from east of Oracle to just east of First Avenue. Left turns in the construction zone are allowed only at signalized intersections except for north on Stone Avenue during the weekend closure. Tucson Police officers will be on site to help direct traffic if necessary. Pedestrians are urged to avoid crossing at the Grant Road and Stone Avenue intersection during this weekend closure. For safety considerations, bicyclists should avoid the construction area.

Work to widen Grant Road from Stone Avenue to Park Avenue began in March. The improvements include six vehicular travel lanes, protected bike/pedestrian street crossings, drainage improvements, indirect left turns at Stone Avenue and First Avenue, bike lanes and sidewalks, bus pullouts and bus shelters, and public art. For more information, please visit or email

The project is part of the $2.1 billion Regional Transportation Authority (RTA) Plan, which will be implemented through 2026. The multimodal plan, nearly halfway through implementation, includes roadway, safety, transit, environmental and economic vitality improvements. This project is managed by the City of Tucson. Details about the RTA plan are available at


Map of closure and detour route