Arizona has started construction on a $613 million Loop 303 extension in Goodyear, expanding one of the Valley’s most important transportation corridors and preparing the southwest Valley for decades of additional growth.
The approximately four-mile project will extend Loop 303 south from Van Buren Street to Maricopa County 85. On its own, that may sound like a short stretch of freeway. On a regional map, it is the missing connection between the established Loop 303 corridor, south Goodyear’s industrial districts, Buckeye’s emerging employment land, and the future State Route 30 freeway.
In simple terms: Arizona is creating the transportation backbone for where it expects more people, jobs, warehouses, manufacturing facilities, and housing to go.
What Is Being Built?
The four-year project includes:
- Extension of Loop 303 from Van Buren Street to Maricopa County 85
- Three general-purpose lanes in each direction between Van Buren Street and Lower Buckeye Road
- Two lanes in each direction between Lower Buckeye Road and MC 85
- A full diamond interchange at Yuma Road
- Half-diamond interchanges at Lower Buckeye Road and Elwood Street
- Completion of the southern half of the Van Buren Street interchange
- New frontage roads to preserve local and business access
- Elevated freeway sections over railroad tracks and major intersections
- A signalized intersection where the new freeway initially ends at MC 85
Construction began in June 2026 with corridor clearing. A new northbound frontage road is expected to carry Cotton Lane traffic while the freeway is built along the existing Cotton Lane alignment.
Drivers should expect nighttime and weekend restrictions, along with some longer cross-street closures. Business access is expected to remain available throughout construction.
The project is funded through the regional freeway plan that includes Proposition 400, the half-cent transportation sales tax approved by Maricopa County voters in 2004.
The Bigger Story: What Loop 303 Will Tie Together
The Loop 303 extension matters because of the larger network surrounding it.
South Goodyear’s industrial and logistics corridor
The Yuma Road, Lower Buckeye Road, and Elwood Street interchanges will provide direct freeway access to an area already becoming a major employment center.
Elwood Logistics Center alone contains approximately 1.3 million square feet of industrial space. It became home to the largest Phoenix industrial lease of 2025 when CEVA Logistics took over the property.
The surrounding corridor also includes distribution, manufacturing, and logistics operations near Phoenix-Goodyear Airport, Union Pacific rail service, and thousands of acres of additional employment land.
This is part of a much larger trend. Metro Phoenix recently ranked second in the country for industrial construction, with much of that activity concentrated in Goodyear, Buckeye, Glendale, and other West Valley communities.
Buckeye’s next major employment district
Just west of the Loop 303 extension, Grand View Arizona is being marketed as a 2,500-acre advanced manufacturing and industrial site.
The property is bordered by Broadway Road, MC 85, Dean Road, and Perryville Road. It includes Union Pacific rail frontage and is positioned near the future Loop 303 and State Route 30 interchange. The project is expected to compete for large manufacturing, energy, aerospace, battery, technology, and logistics employers and has been projected to create more than $1 billion in economic impact.
This is exactly the type of development that benefits from freeway access. Large employers need efficient connections for workers, freight, suppliers, and customers before they commit to a location.
Interstate 10 and the established Loop 303 corridor
From Van Buren Street, Loop 303 already continues north through its major interchange with Interstate 10. That connects the new extension to:
- Goodyear and Buckeye employment centers
- Verrado and surrounding master-planned communities
- Surprise and the Prasada retail corridor
- US 60 and Northern Parkway
- Northwest Valley industrial land
- North Phoenix and Interstate 17
The growth is not theoretical. New housing, retail, and mixed-use projects are already appearing along the freeway, including a 600-unit development planned near Loop 303 in Surprise.
TSMC, NorthPark, and Interstate 17
At the northern end of Loop 303, a separate $129 million project is building direct freeway-to-freeway ramps at Interstate 17 and widening Loop 303 to three lanes in each direction between I-17 and 51st Avenue.
That project is scheduled to take approximately two and a half years and is intended to improve access around TSMC, NorthPark, and other major north Phoenix developments. TSMC recently acquired another 900 acres near its semiconductor campus, while NorthPark is expected to combine industrial development with thousands of future homes.
Taken together, the northern and southern projects are turning Loop 303 into a more complete employment and transportation spine across the outer West Valley.
State Route 30 Will Create the East-West Connection
The Loop 303 extension is also being built to connect with State Route 30, also known as the Tres Rios Freeway.
The central portion of SR 30 will eventually run east from Loop 303 through Goodyear, Avondale, and southwest Phoenix to Loop 202 South Mountain Freeway. It is intended to provide an alternative to Interstate 10, improve east-west travel, and give the southwest Valley a second major freeway corridor.
Construction is planned in phases from east to west:
- The first section, between Loop 202 and 97th Avenue, is scheduled to begin in fiscal year 2027.
- Additional phases will move west through Avondale and Goodyear.
- The final central connection between Estrella Parkway and Loop 303 is planned for the early 2030s.
That timeline is important. The Loop 303 extension should be completed well before the entire SR 30 connection is open. Investors should view this as a long-term transportation buildout—not an overnight transformation.
MC 85 and SR 85 Are Not the Same Road
One detail that can cause confusion is the project’s southern endpoint.
The current Loop 303 project ends at Maricopa County 85, commonly called MC 85. It does not yet connect directly to State Route 85.
Long-range plans call for a western segment of SR 30 between Loop 303 and State Route 85. Preliminary design and environmental work is expected to begin sooner, but construction is not currently anticipated until after 2046.
Eventually, the full SR 30 system is planned to stretch west toward SR 85 and east beyond Loop 202 toward Interstate 17. The center section between Loop 303 and Loop 202 is being prioritized because it can provide the most immediate relief for I-10.
Housing Growth Must Accompany Job Growth
New freeways make more land accessible, but roads alone do not create an affordable or balanced housing market.
The West Valley will also need enough housing near these emerging employment centers. Otherwise, new jobs can create longer commutes and additional pressure on existing home prices and rents.
Fortunately, housing construction is already expanding throughout the region:
- Verrado remains one of the nation’s top-selling master-planned communities, with thousands of additional homes and new retail development planned.
- Teravalis is moving forward in Buckeye with a long-term vision that includes up to 100,000 homes and 55 million square feet of commercial development.
- Goodyear, Surprise, Avondale, and Buckeye continue to approve new subdivisions, apartments, build-to-rent communities, and commercial projects.
More housing supply may limit how quickly rents and home prices rise in the short term. That is not a negative sign. It is how a growing region remains competitive and gives workers more choices near expanding job centers.
What This Means for Real Estate Investors
Infrastructure projects create long-term opportunities, but investors should avoid assuming that every property near a freeway will automatically appreciate.
Important factors to watch include:
- Interchange access: Properties near usable interchanges generally benefit more than properties that are merely close to the freeway.
- Job delivery: Track employers that actually open and hire—not just projects that are announced.
- Housing supply: Strong construction can support population growth while also creating competition for landlords.
- Construction disruption: Noise, closures, truck traffic, and changing access may affect nearby properties before the long-term benefits arrive.
- Infrastructure timing: Roads, utilities, water, schools, and commercial services rarely arrive at the same time.
- Current cash flow: Underwrite investments using today’s realistic rent and expenses. Treat future infrastructure as a possible tailwind, not the reason a weak deal works.
The strongest investment areas are likely to be places where transportation, employment, housing, retail, and utilities develop together.
The Bottom Line
The $613 million Loop 303 extension is more than a four-mile road project.
It will provide new access to south Goodyear’s industrial corridor, position Buckeye’s employment land for future development, strengthen the existing connection to Interstate 10, and prepare the region for State Route 30.
Looking north, the same freeway connects Surprise, Northern Parkway, NorthPark, TSMC, and Interstate 17. Looking west, future transportation investments will support Verrado, Teravalis, State Route 85, and Buckeye’s next generation of residential and employment growth.
Not every piece will arrive at once, and no freeway guarantees property appreciation. But when Arizona commits hundreds of millions of dollars to one corridor, and plans billions more around it, it provides a clear indication of where the region expects growth to continue.