Permafrost is ground that remains at or below 0°C for at least two consecutive years. Much of northern Manitoba, including the area around Churchill, is underlain by permafrost. When warm infrastructure — such as a rail embankment — sits on permafrost, it can transfer heat into the ground, causing the frozen soil to thaw, soften, and shift. This can cause tracks to buckle, sink, or crack.
Engineers have developed a range of proven technologies to build on permafrost. The most effective include:
Thermosyphons: These are passive cooling devices — essentially sealed metal tubes — installed vertically alongside the track. They draw heat out of the ground during cold weather and transfer it to the air, keeping the permafrost frozen. Thermosyphons have been widely used across Russia, Alaska, Canada, and China (most notably on the 2,000-km Qinghai–Tibet Railway). Recent research has led to improved versions, including L-shaped and horizontal thermosyphons that can protect wider zones.
Insulated Embankments: Rigid foam insulation boards (such as Penoplex, used in Yakutia, Russia) are laid at various depths within the rail embankment to reduce heat penetration into the underlying permafrost.
Geocell Stabilization: A honeycomb-structure mat called Tough Cell has been successfully used on the existing Hudson Bay Railway itself. It provides lateral restraint of the ballast (the gravel beneath the tracks) and causes the entire track to settle evenly rather than in dangerous, uneven patches. This technique reduced repair costs to 20–25% of what traditional methods would have required on the Hudson Bay line.
Snow and Solar Sheds: Overhanging sheds on embankment slopes reduce solar heat absorption in summer and control snowmelt, helping maintain stable ground temperatures. Used in Yakutia, Russia.
Elevated Structures: In extreme cases, rails can be built on elevated pile structures — essentially pillars driven deep into the permafrost — allowing cold air to circulate beneath the track and prevent heat transfer.
Qinghai–Tibet Railway (China): The world's most ambitious permafrost rail project, covering approximately 550 km of permafrost terrain at extreme altitude. China has more real-world data on permafrost rail construction than almost any other country. However, that railway is now showing strain as permafrost degrades under climate change, with sections requiring costly ongoing maintenance.
Yakutia Railway (Russia): The Amur–Yakutsk Mainline crosses ice-rich permafrost in Siberia. Russian engineers have deployed a combination of thermosyphons, Penoplex insulation, and snow sheds with measurable success, though costs remain high.
Alaska Railroad: Operates across permafrost terrain and has extensive experience with thaw-related track failures and remediation. Alaska's Department of Transportation estimated permafrost-related road maintenance costs of $11 million per year in just its northern district by 2013.
Hudson Bay Railway (existing): The existing line to Churchill already crosses permafrost terrain in its northern half. In May 2017, spring flooding washed out 30 sections totaling two kilometers, cutting Churchill off from land transport for 18 months. The Arctic Gateway Group and the federal government have since invested over $170 million in rehabilitation, and geocell technology has been applied.
This is the most serious engineering concern. Climate change is actively degrading permafrost across northern Canada. Research shows that 30–50% of critical circumpolar infrastructure is expected to be at high risk by 2050. A Northern Hemisphere-wide study estimated that maintaining permafrost-zone infrastructure through 2085 could require an additional $205–572 billion globally. For rail specifically, repairs to thaw-damaged track in the Arctic are projected to cost approximately $2 billion under current emission trajectories, dropping to roughly $1 billion if emissions are aggressively reduced.
In practical terms, any new Churchill spur line must be designed with ongoing maintenance budgets that assume increasing permafrost thaw. Thermosyphons and geocell will help, but they are not permanent solutions without continued investment. A spur line of even 50–100 km over permafrost terrain would likely require tens of millions of dollars in annual maintenance by mid-century.
The Port of Churchill was built by the Canadian federal government and remained in public hands until 1997, when it was sold — along with the Hudson Bay Railway — to the American company OmniTRAX for just $10. Under OmniTRAX, the port and railway declined steadily due to underinvestment. Freight service was suspended entirely in August 2016, and the May 2017 floods that destroyed sections of the railway were the final blow. The Canadian government filed an $18 million lawsuit against OmniTRAX for breach of contract.
In 2018, the Arctic Gateway Group (AGG) — a private entity representing 29 First Nations and Hudson Bay communities — purchased the port and railway. By 2021, full community and Indigenous ownership was achieved when AGG's corporate partners transferred their shares to OneNorth, a consortium of northern communities.
The port has undergone significant rehabilitation. As of 2024–2025, the Port of Churchill has three times the critical mineral storage capacity it had the previous year, and it completed its second consecutive season of shipping critical minerals to Europe. The Hudson Bay Railway now operates two weekly freight trains, and Transport Canada has committed $175 million over five years (beginning 2025–2026) plus a further $180 million for ongoing railway and port development. Prime Minister-level support has been confirmed.
The Arctic Gateway Group signed a memorandum of understanding with Fednav, a major international dry bulk shipping company, to explore year-round shipping seasons — a significant step beyond the port's traditional July-to-November window.
The port's wharf is undergoing refacing. To handle significantly increased freight volume — the kind of volume a BRI-funded expansion would aim for — the port would require deeper berth dredging, upgraded cargo handling equipment, expanded storage facilities, improved cold-weather operations infrastructure, and potentially a second dedicated rail connection to handle simultaneous unloading and loading. Estimates for full-scale modernization to international competitive standards would likely run into the hundreds of millions of dollars beyond what has already been committed.
Climate change is, paradoxically, both a threat and an opportunity for Churchill. Permafrost thaw threatens rail infrastructure (as described above), but melting Arctic sea ice is extending the shipping season. Hudson Bay is becoming navigable earlier in spring and later in autumn each decade. By mid-century, year-round shipping through Hudson Bay may be realistic, which would transform Churchill from a seasonal grain-export port into a viable year-round Arctic trade hub.
Churchill's geographic position is genuinely strategic: it is the shortest deep-water port route connecting the Canadian Prairies to Europe, and it sits at the entry point of the Northwest Passage corridor. For shipping grain, potash, critical minerals, and northern supplies, it has real competitive advantages over the Port of Vancouver or eastern seaports.
China is not an Arctic nation, but it has declared itself a "near-Arctic state" and published a formal Arctic policy. In its 2018 white paper, China introduced the concept of the "Polar Silk Road" — an extension of the BRI through Arctic shipping lanes — and has stated its ambition to become a "polar great power" by 2030.
China's strategic objectives in the Arctic include developing commercial shipping routes (the Northern Sea Route between Asia and Europe is approximately 7,000 km shorter than via the Suez Canal, reducing transit time by 40% and fuel costs by more than 20%), accessing natural resources including critical minerals, oil, and fish, and expanding scientific research with dual-use applications. In October 2025, Russia and China signed a formal agreement to jointly develop the Arctic passage as the backbone of the Polar Silk Road.
In August 2025, China's icebreaker Xue Long 2 led a five-vessel research mission that operated just 290 nautical miles from Alaska. While described as scientific, the scale and proximity drew immediate concern from both Washington and Ottawa.
The most instructive example is Sri Lanka's Hambantota Port. Facing a serious debt crisis in 2017, Sri Lanka entered a debt-for-equity swap with China, granting China a 70% stake in the port under a 99-year lease. While Sri Lanka's government offered assurances the port would not be used for military purposes, enforcement mechanisms were vague. India and the United States remain concerned that China could use Hambantota as a resupply node for the People's Liberation Army Navy. Sri Lanka has since sought to renegotiate the agreement.
Similar dynamics have played out across Africa. Kenya, Zambia, Ghana, and others have faced debt distress tied to BRI loans, with Zambia and Ghana both defaulting in 2020. Developing nations now owe China at least $1.1 trillion in outstanding obligations. Twenty-three BRI countries are considered at risk of debt distress.
It is important to note that some scholars dispute the most extreme characterizations of "debt-trap diplomacy." Research by Deborah Brautigam and others at Johns Hopkins argues that China has never actually seized an asset from a country — it has restructured loans — and that the Hambantota narrative is partly overstated. However, even critics of the "debt trap" label acknowledge that BRI agreements frequently favour Chinese firms, Chinese labour, Chinese equipment, and Chinese strategic interests in ways that may not benefit the host country equally.
Canada faces a distinctive set of risks that differ from vulnerable developing nations:
Sovereignty signalling: Granting China a 99-year lease on Arctic infrastructure would be read internationally — and by China — as a significant symbolic concession of Canadian Arctic sovereignty. Canada has been asserting Arctic sovereignty more forcefully in recent years; this deal would contradict that posture.
Five Eyes and NATO concerns: Canada is a member of the Five Eyes intelligence alliance (with the US, UK, Australia, and New Zealand) and NATO. American officials have been outspoken about Chinese infrastructure in the Arctic. A Churchill dock lease would create serious friction with Washington and could affect intelligence-sharing arrangements.
Dual-use infrastructure: Port facilities, deep-water docks, and rail lines are inherently dual-use. Even with a military-use restriction clause, any dock operated by a Chinese state enterprise would be visible to Chinese intelligence, subject to Chinese personnel security protocols, and potentially used for intelligence-gathering activities short of military deployment.
Supply chain leverage: If China constructs and maintains the rail spur and leases the dock, it gains leverage over northern Manitoba's supply lines and the communities that depend on them. In a deteriorating geopolitical environment, this leverage could be weaponized.
The scenario is not without legitimate benefits. China commands the largest infrastructure construction capacity in the world and could fund and build the rail spur faster and more cheaply than Canadian or Western alternatives. A genuine trade corridor through Churchill could revitalize northern Manitoba's economy, create Indigenous employment, reduce the cost of goods in remote communities, and position Canada advantageously in Arctic trade routes. Critical minerals — increasingly in demand globally — could reach European markets more efficiently. If structured correctly, this partnership could bring real development to one of Canada's most economically marginalized regions.
The most direct precedent is, again, Hambantota. The Sri Lankan government insisted on and received assurances that the port would not be used for military purposes. The agreement was delayed for months specifically because of concerns about military use. Despite these assurances, Indian and American strategists consider the restriction essentially unenforceable over a 99-year horizon, given the difficulty of verifying cargo, the change of governments, and China's growing naval ambitions.
The 99-year lease structure itself has deep historical roots — most notably in the 1898 lease of the New Territories from China to Britain (Hong Kong), which expired in 1997. The Hong Kong experience illustrates that over a 99-year period, the political, legal, and strategic landscape can change entirely, rendering original restrictions either obsolete or unenforceable.
Cuba's Guantanamo Bay lease to the United States offers a different lesson: even when a host country wishes to terminate a lease, enforcement can be effectively impossible if the leaseholder simply refuses to leave.
Canada's Investment Canada Act (ICA), updated by Bill C-34 in 2024, gives the government sweeping authority to review and block foreign investments that pose national security risks. Critical infrastructure — explicitly including ports — is listed as a priority sector for national security review. Under current law, a 99-year dock lease to a Chinese state enterprise would almost certainly require a national security review and could be blocked outright.
Any such agreement would also require parliamentary approval, treaty registration, and likely provincial consent from Manitoba. Indigenous consent from the 29 First Nations communities that own the Arctic Gateway Group would be a legal and moral requirement under the duty to consult and, arguably, under the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP), which Canada has adopted.
A "no military use without explicit Canadian permission" clause faces the following enforcement challenges:
Definitional ambiguity: What constitutes "military cargo"? A dual-use vessel carrying communications equipment, fuel, or scientific instruments could serve both civilian and military purposes. Definitions must be exhaustive and legally precise.
Inspection rights: Canada would need treaty-level rights to inspect any vessel, cargo, and personnel at the leased dock on demand, with no notice requirement and no right of refusal by the lessee. This is diplomatically unusual and would likely be resisted.
Government change: Over 99 years, Chinese and Canadian governments will change many times. A future Chinese government may not consider itself bound by an agreement signed by a predecessor. A future Canadian government may lack the political will to enforce restrictions. The restriction needs to be embedded in domestic law and treaty-level international law, not just a bilateral contract.
Sanction mechanisms: The agreement must specify what happens if China violates the military-use clause — immediate lease termination, financial penalties, and automatic referral to international arbitration. These provisions need teeth.
Monitoring infrastructure: Physical surveillance of the leased dock — including 24/7 camera monitoring, vessel tracking, cargo manifests subject to Canadian review, and no-notice Canadian Coast Guard boarding rights — must be written into the agreement. Intelligence-sharing with Five Eyes partners should also be formalized.
| Dimension | Assessment | Key Concern |
|---|---|---|
| Engineering (Rail over Permafrost) | Feasible with Conditions | Climate-driven permafrost thaw increases long-term maintenance costs significantly |
| Economic (Port Viability) | Feasible and Improving | Port revival is already underway; BRI funding could accelerate but is not the only option |
| Geopolitical (BRI Partnership) | High Risk | Conflicts with Canadian Arctic sovereignty, Five Eyes obligations, and NATO alignment |
| Legal (99-Year Lease Enforceability) | Very Difficult to Enforce | No BRI country has successfully enforced meaningful military restrictions over time |
| Overall Scenario | Not Advisable As Proposed | Benefits achievable by other means; risks are severe and long-lasting |
Yes. Building a rail spur to Churchill over permafrost is an engineering challenge but not an impossible one. The techniques exist — thermosyphons, geocell, insulated embankments — and have been proven in Russia, Alaska, and on the existing Hudson Bay Railway itself. The construction costs would be high (hundreds of millions of dollars for even a modest spur line), and ongoing maintenance costs will rise as permafrost degrades. A 99-year infrastructure commitment over permafrost in a warming climate is a significant engineering gamble, but it is manageable with adequate investment and modern design.
The Port of Churchill has genuine long-term economic potential. The federal government has already committed over $350 million in recent years and is actively supporting modernization. Growing Arctic shipping routes and critical mineral exports make Churchill's geographic position increasingly valuable. However, Canada does not need Chinese BRI funding to achieve this. Western allies, the Canadian pension fund sector, and Indigenous development corporations represent alternative financing pathways that do not carry the geopolitical risks of BRI involvement.
No — not in its current form. The geopolitical costs outweigh the economic benefits. China's Polar Silk Road strategy is explicit: it seeks permanent infrastructure footholds across Arctic nations. Granting a 99-year lease at Churchill would advance that strategy at Canada's expense. Canada's closest ally, the United States, would view this as a serious breach of alliance trust at a moment when Arctic security is a top military priority. The Five Eyes and NATO dimensions of this decision cannot be separated from the economics.
If Canada were to pursue a modified version of this scenario — for example, a shorter-term agreement with a non-state Chinese entity or a multilateral Arctic development fund that includes China — the following safeguards would be the minimum required:
The scenario as proposed — a BRI-funded permafrost rail spur to Churchill with a 99-year Chinese dock lease restricted from military use — is technically achievable but geopolitically inadvisable and legally very difficult to enforce over its full term.
The Port of Churchill has genuine strategic and economic value, and Canada should invest in its development. The permafrost rail challenge is real but solvable with proven engineering. The Arctic shipping opportunity is growing. None of this requires Chinese BRI involvement.
The economic benefits of this particular partnership could be obtained through Canadian federal investment, Indigenous development capital, Canadian pension funds, or a Western-aligned multilateral Arctic development mechanism. The geopolitical costs — a permanent Chinese foothold in Canadian Arctic infrastructure, friction with the United States and NATO, and a 99-year enforcement challenge — are not offset by those benefits.
If Canada nonetheless chooses to explore a modified, shorter-term, and more limited arrangement, the safeguards outlined in Section 6 represent the minimum that responsible governance would require. Any arrangement that falls short of those safeguards should be refused.