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The Arizona Department of Transportation advises drivers to plan for overnight lane restrictions along north- and southbound Interstate 19 between Ajo Way and Valencia Road and along east- and westbound Irvington Road between 15th Avenue and Landing Center Drive from 9 p.m. to 5 a.m. beginning Tuesday, Sept. 8, ending Friday, Sept. 11, as work on the I-19, Irvington Road interchange improvement project continues in Tucson.

Motorists can expect the following overnight restrictions:

  • North- and southbound I-19 will be narrowed to one lane between Ajo Way and Valencia Road.
    • A 16-foot vehicle width restriction will be in place.
    • The speed limit will be reduced to 45 mph in the work zone.
  • East- and westbound Irvington Road will be reduced to one lane in each direction between 15th Avenue and Landing Center Drive.
    • A 10-foot vehicle width restriction will be in place.
    • The speed limit will be reduced to 25 mph in the work zone. 

Drivers should allow extra time, use caution, be prepared to slow down and merge safely when approaching and traveling through all work zones.