Phnom Penh – Siem Reap – Poipet Expressway: Cambodia’s $4.2 Billion Game Changer for Business and Connectivity.
In a country poised for rapid economic transformation, Cambodia’s third and most ambitious expressway project is set to revolutionize the landscape of domestic and regional trade, tourism, and investment. The Phnom Penh – Siem Reap – Poipet Expressway, a $4.2 billion mega infrastructure initiative, is more than just a road—it is a new lifeline that promises to redefine connectivity across Cambodia’s key economic and cultural corridors.
Backed by a completed feasibility study and currently awaiting final governmental approval, the expressway will run from Win-Win Boulevard in Phnom Penh through Siem Reap, the kingdom’s cultural heartbeat, and terminate in Poipet, a bustling border city linking Cambodia with Thailand. Spanning approximately 400 kilometers, this expressway will be the longest and most impactful highway ever constructed in the country.
In this story, we dive into the full story of this expressway—from its conception and construction plans to its economic implications—and explore how it will supercharge local and regional businesses across multiple sectors.
The Road to Cambodia’s Third Expressway
Cambodia’s expressway development journey began with the Phnom Penh–Sihanoukville Expressway, inaugurated in 2022. It was a landmark project, cutting travel time and boosting logistics efficiency between the capital and the country’s most important deep-sea port. The success of this initial project laid the groundwork for the second expressway, Phnom Penh–Bavet, which connects Cambodia to Vietnam and is currently under construction.
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Now comes the third and most ambitious leg in this national development plan: the Phnom Penh–Siem Reap–Poipet Expressway, also known as the PP–SR–Poipet Expressway. Spearheaded by China Road and Bridge Corporation (CRBC), the expressway is part of a broader national goal to improve transportation networks, stimulate economic growth, and enhance Cambodia’s integration into regional supply chains.
According to Cambodia’s Minister of Public Works and Transport, the expressway’s feasibility study has been completed, and the government is preparing to greenlight the project in the near future. The expressway will cover a distance of about 400 kilometers, reducing the travel time between Phnom Penh and Poipet from 8–9 hours to around 5 hours, with Siem Reap becoming a key stopover hub along the route.
Route and Key Stops: A Strategic Blueprint
The expressway will start at Win-Win Boulevard in Phnom Penh, pass through Skun in Kampong Cham, then continue to Siem Reap, before reaching Poipet, a vital border city in Banteay Meanchey Province.
This route was deliberately chosen for both economic and strategic reasons:
- Phnom Penh is Cambodia’s economic, political, and population center.
- Siem Reap is the cultural heartland and a global tourism magnet, thanks to Angkor Wat.
- Poipet serves as a vital trade gateway with Thailand and connects to major highways into Bangkok.
This alignment creates a high-potential economic corridor linking domestic and international trade routes, tourism destinations, and emerging industrial zones.
10 Ways the Expressway Will Benefit Local and Regional Businesses
1. Boosting Domestic Trade and Logistics
Currently, transporting goods from Phnom Penh to Poipet takes over 8 hours on congested national roads. The expressway will dramatically reduce delivery times and logistics costs. It will streamline the movement of agricultural products, textiles, electronics, and machinery across provinces, improving supply chain efficiency for local manufacturers, exporters, and importers.
“Time is money in logistics. This expressway will cut delivery times in half, which can transform our competitiveness,” said Chan Boramey, a logistics consultant based in Phnom Penh.
2. Empowering SMEs Along the Corridor
Small and medium-sized enterprises (SMEs), particularly in Kampong Thom, Siem Reap, and Banteay Meanchey, will benefit from increased accessibility. Farmers will be able to bring products to markets faster, artisans can access more tourists, and food producers will reach national retailers more easily.
Increased connectivity also means rural entrepreneurs will gain better access to financing, training, and digital tools from the capital and international partners.
3. Reviving and Reimagining Siem Reap’s Tourism Sector
Post-pandemic, Siem Reap has been eager for a tourism revival. The expressway will make it significantly easier for both local and international tourists—especially those coming via Phnom Penh or Thailand—to travel to Siem Reap. Travel times from Phnom Penh to Siem Reap will fall from 6–7 hours to just around 3.5–4 hours.
Tour operators, hotels, and local artisans will benefit from more predictable travel patterns and increased visitor volumes. Weekend travel will also surge, encouraging a boom in short-stay domestic tourism.
4. Strengthening Regional Integration with Thailand
Poipet, which borders Thailand’s Sa Kaeo Province, is a major cross-border trade and transit point. The new expressway will reinforce this economic bridge by facilitating smoother flow of goods, services, and people between Cambodia and Thailand.
With upgraded transport logistics, Cambodia will attract Thai businesses seeking cheaper labor and access to Vietnam, creating new opportunities for industrial parks and service hubs along the corridor.
5. Enhancing Foreign Direct Investment (FDI)
Infrastructure is a key determinant for foreign investors. The expressway will make Cambodia more attractive for regional and global investors looking to set up operations in central and northern Cambodia.
Industrial zones and special economic zones (SEZs) in Kampong Thom, Siem Reap, and Poipet are likely to see new investment in manufacturing, logistics, hospitality, and renewable energy.
6. Job Creation and Human Capital Development
The construction and operation of the expressway are expected to generate thousands of jobs—from engineers and technicians to local suppliers and service providers. Once operational, the increased economic activity along the route will require a larger, more skilled workforce in tourism, logistics, retail, and maintenance sectors.
“Infrastructure creates both direct and indirect jobs. It changes the skill dynamics of entire regions,” said Sokha Neary, a Phnom Penh-based economist.
7. Unlocking Property and Real Estate Potential
Areas around major interchanges and rest stops—especially in Skun, Kampong Thom, and Siem Reap—are likely to become real estate hotspots. Investors are already eyeing these regions for hotels, gas stations, logistics centers, and housing developments.
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The expressway will also reduce congestion in urban centers by encouraging suburban development in areas along the corridor.
8. Catalyzing E-Commerce and Digital Economy Growth
Faster and more reliable transportation will support Cambodia’s growing e-commerce ecosystem. Online retailers will benefit from faster delivery times and wider reach, especially to previously underserved provinces.
This will also encourage more people in rural areas to engage in online selling, digital payments, and mobile logistics platforms.
9. Climate Resilience and Green Transport Opportunities
Although roads can increase carbon emissions, expressways like this one—with regulated traffic flow and better fuel efficiency—can actually lower emissions per vehicle. The expressway can also serve as a testbed for green transport, including electric vehicle infrastructure.
“Strategic expressways with good design and rest areas can integrate solar charging stations and EV-friendly services,” said an official from Cambodia’s Ministry of Environment.
10. Strengthening National Unity and Accessibility
Finally, perhaps the most profound long-term benefit is social integration. The expressway will allow people from different regions—urban and rural, rich and poor—to connect more easily. Access to healthcare, education, and emergency services will improve significantly in underserved provinces.
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This kind of infrastructure not only boosts the economy—it helps build a more inclusive and connected nation.
Economic and Political Implications
At an estimated cost of $4.2 billion, the Phnom Penh–Siem Reap–Poipet Expressway represents one of Cambodia’s largest infrastructure investments to date. Much of the financing is expected to come through a build-operate-transfer (BOT) model involving Chinese partners, similar to the Phnom Penh–Sihanoukville expressway.
Politically, the project underscores Cambodia’s ongoing partnership with China under the Belt and Road Initiative (BRI). It also strengthens Cambodia’s ASEAN regional integration strategy, linking its trade and tourism sectors more deeply with those of Vietnam, Thailand, and beyond.
Development Timeline and What’s Next
As of mid-2025, the feasibility study has been completed and submitted to the Cambodian government. The project is awaiting formal approval and final agreements on financing, construction responsibilities, and timeline.
Assuming approval is granted in late 2025, construction could begin in early 2026 and take approximately 4–5 years, meaning the expressway may be operational by 2030—just in time to support Cambodia’s Vision 2030 goals for becoming a middle-income country.
A Road to the Future
The Phnom Penh–Siem Reap–Poipet Expressway is more than a transportation project—it’s a visionary national asset that will reshape Cambodia’s economic geography, empower local businesses, and deepen cross-border collaboration with Thailand. From farmers in Kampong Thom to hoteliers in Siem Reap and exporters in Poipet, the benefits will ripple far and wide.
If Cambodia hopes to compete regionally and uplift its citizens economically, such strategic infrastructure investments are essential. This expressway is not just a road—it’s a bridge to prosperity.
What do you think about Cambodia’s upcoming Phnom Penh–Siem Reap–Poipet Expressway? Do you believe it will bring long-lasting benefits to your community or business?
Share your thoughts in the comments or connect with us for more updates on Cambodia’s infrastructure future.
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