The Arizona Department of Transportation has scheduled several improvement projects over the weekend that will affect traffic along interstates 10 and 17 as well as Loop 303.

Drivers should allow extra time or plan alternate routes in the following areas from Friday night, Nov. 11, Monday morning, Nov. 14:

• Southbound I-17 will be closed between Loop 101 and Greenway Road from 10 p.m. Friday to 5 a.m. Monday for ADOT’s ongoing pavement improvement project. 

Both Loop 101 ramps to southbound I-17 will be closed as will southbound I-17 on-ramps at Pinnacle Peak and Deer Valley roads and Rose Garden Lane. Detours: Consider exiting ahead of the closure and using southbound 19th or 35th avenues to travel beyond the closure. Drivers also can consider using southbound State Route 51 as an alternate southbound freeway route.

• I-10 will be narrowed to one lane in both directions between Loop 202 and Riggs Road from 11:30 p.m. Friday to 8 p.m. Saturday and from 11:30 p.m. Saturday to 8 p.m. Sunday for pavement sealing. 

All ramps connecting I-10 and Loop 202 will be closed at times Saturday (ramps to reopen as soon as possible after pavement sealant dries). Also plan for I-10 on- and off-ramp closures between Chandler Boulevard and Riggs Road on Saturday (I-10 right lanes will be closed). 

• Westbound Loop 303 will be closed between I-17 and Lake Pleasant Parkway from 8 p.m. Friday to 5 a.m. Monday for construction. 

I-17 off-ramps at Loop 303 will have restrictions with access limited to using Sonoran Desert Drive (east of I-17). I-17 on-ramps at Loop 303 will remain open. Detour: Alternate routes include westbound SR 74 to southbound Lake Pleasant Parkway to enter Loop 303 beyond the closure.

• Westbound Thunderbird Road will be closed around-the-clock between the northbound I-17 frontage road and the Metro North Corporate Park road (west of I-17) from 9 p.m. Friday to 5 a.m. Monday, Nov. 21, for a regional drainage system project. 

Detour: Consider using Cactus or Greenway roads as alternate routes.  Note: The southbound I-17 off-ramp and southbound frontage road between Acoma Drive and Thunderbird Road is scheduled to be closed from Friday, Nov. 11, to spring 2023 for the drainage project. Local access routes will be available.