Meridian Intersection Gets New Signal, Turn Lanes
Ada County Highway District is upgrading McMillan and McDermott with a traffic signal and dedicated left-turn lanes while a separate sewer project closes part of McMillan Road.
Updated on Nov. 4, 2026 in Home Renovation
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The Ada County Highway District is installing a new traffic signal and dedicated left-turn lanes at McMillan and McDermott in Meridian to improve pedestrian safety. Separately, a stretch of McMillan Road farther west is completely closed for sewer work tied to the Can Ada Lift Station project.
Why it matters
The city says the Can Ada Lift Station infrastructure is needed to accommodate growth in the area. The intersection upgrades address pedestrian safety at a corridor where road work is already underway in multiple places.
McMillan Road remains open with lane restrictions at McDermott, while a stretch farther west is completely closed for sewer work. The intersection improvements are expected to be complete in early November.
The players
Ada County Highway District
The regional highway agency responsible for roads in Ada County, which is leading the intersection signal and turn-lane project at McMillan and McDermott.
The details
Fred and Mary Roberts, who have lived in this part of Meridian for about two years, have watched the area change as two neighborhoods were built nearby. A crosswalk at the intersection was previously grass and weeds, and the upgrades add a signal and left-turn lanes to the intersection.
Timeline
Early November 2026: McMillan and McDermott intersection improvements expected to be complete.
December 4, 2026: Final phase of the Can Ada Lift Station project expected to wrap up.
Roadmap
Growth in Meridian's residential neighborhoods is driving a pattern of road and utility upgrades along corridors like McMillan Road. The Can Ada Lift Station project and the McMillan and McDermott intersection work both reflect infrastructure being built ahead of new housing.
Drivers on McMillan Road should expect lane restrictions at McDermott and plan around a full closure farther west during the sewer work. The new signal and left-turn lanes will change how traffic moves through the intersection once complete.
The takeaway
Drivers heading through McMillan and McDermott should allow extra time and watch for lane restrictions until the November upgrades are finished.
What happens next
The McMillan and McDermott intersection improvements are expected to be complete in early November, and the Can Ada Lift Station final phase is expected to wrap up December 4.
Further reading
Explore more local projects in Home Renovation for Meridian residents.
Source note: This article includes information reported by Idaho News 6 Boise Twin Falls (KIVI).
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