Finally, Relief: Highway 99 and 120 Connection Opens for 180,000 Daily Drivers

If you’ve sat bumper-to-bumper at the Highway 120 and 99 interchange in Manteca, you know the feeling: gridlock that makes you question every life choice that led to that exact moment on that exact stretch of asphalt.

That frustration just got a major upgrade. The San Joaquin Council of Governments held an official ribbon-cutting ceremony on Wednesday morning to celebrate the completion of the State Route 99/120 Interchange Connector project, a $50 million-plus overhaul designed to untangle one of the region’s most persistent traffic bottlenecks. The project includes a new Austin Road overcrossing and a complete redesign of how vehicles transition between the two freeways—a critical improvement for the roughly 180,000 cars that make this connection daily.

What makes this particularly noteworthy isn’t just the congestion relief it promises (though trust us, that matters). This marks the first time the San Joaquin Council of Governments has led a construction project from concept straight through to completion. For a regional agency, that’s a significant milestone—proof of execution and staying power on a major infrastructure challenge.

The impact ripples outward. This corridor doesn’t just carry commuters; it’s the artery for agriculture, freight, logistics, and tourism flowing through San Joaquin County. Christina Fugazi, chair of the San Joaquin Council of Governments, framed it perfectly: when you reduce delays and congestion, you’re not just saving time—you’re supporting economic movement and cleaner air. Congressman Josh Harder joined the celebration, underscoring that this is the kind of regional connectivity that matters to state and federal leadership.

Here’s the thing worth noting: this is phase one. Two more phases are planned to continue improving the Highway 99 corridor in that area. So while you can celebrate smoother merges starting now, the work to transform this stretch into a genuine transportation hub is far from over. For now, though, those 180,000 daily drivers have one fewer reason to grip the steering wheel in frustration.