Glendale, AZ – A new fourth lane on Loop 101 has opened, easing congestion and improving traffic flow along a key West Valley corridor.
According to the Arizona Department of Transportation, the newly completed general-purpose lane is now open on the Agua Fria Freeway west of Interstate 17, stretching between 27th Avenue and 51st Avenue. The expansion is part of a broader freeway widening project aimed at reducing delays and accommodating long-term population growth in the Phoenix metro area.
ADOT officials said the improvement marks a visible milestone in the ongoing project, which began construction in September 2024. Additional work remains underway, including the construction of a new freeway entrance turn lane along southbound 75th Avenue.
The full project is expected to improve traffic flow across multiple segments of Loop 101 once completed. Officials estimate construction will continue through spring 2026.
Funding for the project comes from Proposition 400, a regional transportation plan approved by Maricopa County voters in 2004 and administered by the Maricopa Association of Governments.
Drivers traveling through the corridor may still encounter intermittent construction activity and are advised to use caution and allow extra travel time, particularly during peak commute hours.
The Loop 101 corridor is a major route for commuters, freight traffic, and students traveling across the West Valley, making the expansion a significant upgrade for daily travel reliability.
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