The Dual Corridor Era: What Two Bridges Changed for Wuyi

For more than a century, the west bank of the Pearl River estuary was the shore people left. From Taishan (台山, Táishān) and Kaiping (开平, Kāipíng), emigrants sailed out of small river ports bound for North America, Australia and the Nanyang, and the money they sent home came back as the fortified diaolou towers that still crowd the rice fields. Today that same shore is a thirty-minute drive from the core of the Greater Bay Area — and the region has a name for what happened: the dual-corridor era (双通道时代, shuāng tōngdào shídài).

The two crossings that opened in 2024 did more than shorten commutes. They collapsed the distance between Wuyi’s quiet emigration coast and the most densely built economic corridor on the Chinese mainland — and in doing so, they reversed the oldest axis of the region’s story. For a descendant of Wuyi, “going home” no longer means a voyage. It means a drive.

Two Bridges, One Year

In June and December of 2024, two of the most ambitious sea crossings ever built came online within six months of each other, both touching the same stretch of the Pearl River estuary.

The Shenzhen–Zhongshan Link (深中通道, Shēn–Zhōng tōngdào) opened first, on June 30. It is not a single bridge but a 24-kilometre chain of bridge, artificial island, and undersea tunnel — one of the most difficult cross-sea engineering projects ever attempted, and one that plugs Shenzhen directly into the estuary’s western shore. The drive from Shenzhen to Zhongshan, once a two-hour detour up and around the delta, fell to thirty minutes. The project cost roughly ¥46 billion, and the toll for a standard car is ¥66. Guangdong’s transport authorities framed the crossing as the “key horizontal” (关键一横) of the estuary’s A-shaped road network — the missing bar that turns a pair of parallel city-clusters into a single, drivable whole, and the first link in what planners call the estuary’s “golden inner bay” (黄金内湾, huángjīn nèiwān).

Five and a half months later, on December 11, the Huangmaohai Cross-Sea Corridor (黄茅海跨海通道, Huángmáohǎi kuàhǎi tōngdào) opened to traffic. At 31 kilometres with a roughly 14-kilometre stretch over open water, it runs from Zhuhai’s Gaolangang area westward across the Huangmao Sea and into Taishan, ending at Doushan town. Built at a cost of ¥12.9 billion, with six lanes, a design speed of 100 kilometres an hour and a century-long design life, it is the third national-level cross-sea passage in the Greater Bay Area, after the Hong Kong–Zhuhai–Macau Bridge and Shenzhen–Zhongshan. The practical number that mattered most to Jiangmen: the drive from Zhuhai to Taishan, once an hour, is now thirty minutes. Taishan sits thirty minutes from Zhuhai and about an hour from Hong Kong and Macau.

Put the two crossings together and the arithmetic is stark. Before 2024, a traveller from the estuary’s eastern cities to Wuyi’s west bank faced a long detour or a ferry. After 2024, the entire region plugs into the “one-hour life circle” (一小时生活圈) that Guangdong has spent two decades building — and the four points of Hong Kong, Macau, Zhuhai and Jiangmen now sit on one continuous line of road.

The two crossings are not twins, and the difference matters. Shenzhen–Zhongshan is the strategic bridge: it plugs the estuary’s richest city into the west bank’s cheap land, and it carries the industrial argument. Huangmaohai is the family bridge: it is the one that lands in the qiaoxiang itself, at the emigration coast, and it carries the emotional one. Both were billed, in the run-up, under the same collective noun — the “dual corridors” (双通道) — and it is that pairing, not either crossing alone, that changed the region’s posture.

A World Record Over the Huangmao Sea

The Huangmaohai crossing’s centrepiece is the Huangmaohai Bridge (黄茅海大桥), and it holds a title worth pausing on: at a main span of 2×720 metres, it is the world’s largest-span three-pylon cable-stayed road bridge — not the biggest bridge in the world, but the biggest of its specific, technically unforgiving kind.

Three-pylon bridges are harder than the familiar two-tower kind for a reason. With a middle tower instead of a single pair of anchors, the deck can move in ways that a two-tower bridge resists; the central pylon has to hold the road steady against wind and traffic without the deep anchor of land on either side. The Huangmaohai engineers solved it with a tower design that has become the crossing’s visual signature: three concrete pylons, the central tower rising about 264 metres — roughly eighty storeys — that taper at the waist like the Canton Tower’s “slender waist” (小蛮腰, xiǎomán yāo). The double-curved single-column towers aren’t decoration. In the typhoon-prone waters of the South China Sea, their shape breaks up the vortex shedding that can set a bridge oscillating in high wind.

The crossing carries a second, smaller superstructure too — the Gaolangang Bridge (高栏港大桥), a two-pylon span of 700 metres nearer the Zhuhai side. Between them, the two bridges represent a deliberate escalation in what Guangdong’s road-builders will attempt over open water. The main span was closed in June 2024, and the record it holds is the quiet kind: a technical superlative that means, in plain terms, that the roads of Guangdong can now cross a stretch of open water that once had to be sailed around. The approach, tellingly, was not imported — the bridge was designed in China, by the CCCC Highway Consultants, and its tower form is a first-of-its-kind structure rather than a copy of an existing one.

What Jiangmen Calls It: the “Bridge Economy”

Jiangmen’s government has a phrase for all this, and it is doing a lot of work in the city’s official language: the bridge economy (大桥经济, dàqiáo jīngjì). The framing is that the two crossings don’t just move cars — they move capital, technology and talent westward across the estuary, out of the saturated core of Shenzhen and Zhuhai and into the cheaper, emptier land of the west bank.

The numbers Jiangmen cites to make the case: its GDP has passed ¥400 billion, and it is openly targeting ¥1 trillion within a decade. The model it borrows is “Shenzhen headquarters + Jiangmen base” (深圳总部 + 江门基地) — Shenzhen’s firms keep their front offices on the east bank while manufacturing and land-hungry operations settle in Jiangmen. It is the same playbook Zhongshan and the rest of the west bank are running, and the bridges are what make it plausible: a factory in Taishan is now a commuter drive from the Shenzhen airport’s catchment, connected by the Zhongshan–Kaiping Expressway and the new crossings. Jiangmen has also opened the “Shenzhen Airport Jiangmen air port” (深圳机场江门航空港) — a check-in terminal inside Jiangmen with shuttle coaches to Shenzhen Bao’an Airport — so a west-bank passenger can check in and ride across the new crossing to catch a flight.

The most concrete claim in the whole pitch is about time. By the government’s own accounting, the crossings pull Jiangmen into Shenzhen’s “one-hour economic circle” (一小时经济圈) — close enough that a west-bank morning and an east-bank afternoon can happen on the same working day, and close enough that “Shenzhen headquarters, Jiangmen base” becomes a daily commute rather than a relocation. That is the threshold the region spent years working toward, and it is the number that turns a slogan into a spreadsheet.

Whether the “bridge economy” delivers on its own rhetoric is a separate question — and the honest answer, for now, is that it is too early to say. Jiangmen’s own framing is explicit that the crossings are an opportunity, not a settled outcome; the industrial relocation the slogan predicts will take years to measure. What is not in dispute is the physical fact underneath the slogan: the west bank is no longer the end of the line.

The Villages at the End of the Bridge

The corridor’s first stop in Jiangmen is Chixi (赤溪镇), a town that sits almost literally where the bridge touches down. It is an unusual place in Taishan for a specific reason: it is the county’s only Hakka-settled town, a pocket of Hakka speakers in a landscape otherwise defined by the Cantonese-speaking majority — a history the Heshan Hakka story traces in more depth. Chixi stretches across 282 square kilometres with 76 kilometres of coastline, and it already hosts the Taishan Nuclear Power Plant and the Guoneng power station.

In the months before and after the bridge opened, Chixi was a construction site. The provincial transport department’s own write-up noted that land that was once tidal flats and fish ponds is now “machines roaring every day.” The town is the landing point for the first-phase zone of a planned RCEP trade, technology and cultural cooperation centre — a mouthful that, stripped down, means the bridge’s western landing is being built out as a logistics and industrial node aimed at the trade bloc that runs from East Asia down to Australia.

At the corridor’s terminus, Doushan (斗山镇) is taking a different route. It is leaning into what it already knows: green food and aquaculture — eel (鳗鱼, mányú) and the region’s silk-milled rice (丝苗米, sīmiáomǐ) — angling to become a “national-brand” agricultural supplier to the enormous market now a bridge-ride away. The town’s official posture is deliberately humble: play the “shop assistant” (店小二, diànxiǎo’èr) to the businesses the corridor brings, keep the land cheap and the welcome warm. The contrast between the two towns is the story of the corridor in miniature: one town betting on heavy industry and trade, the other on the products of the land, both newly connected to the estuary’s core.

The First Port of Emigration, Now the First Stop Home

The most resonant detail of the whole project is not an engineering figure. It is that the Huangmaohai corridor lands in the same landscape where the emigration story began.

Duanfen town, not far east of the corridor’s route, was home to Haikoubu (海口埠), the port the region still calls the “first port of Cantonese emigration” (广府人出洋第一港) — the riverside quay from which much of Wuyi’s overseas population set out toward Hong Kong, Macau, and then the wider world. That story, and the town built from the money that came back, is told in the Duanfen article. What the corridor adds is a literal return path: the same water that carried emigrants away is now crossed in minutes by a road.

In November 2024, weeks before the bridge opened, 35 Taishan community leaders — qiaoling (侨领), returned overseas-Chinese representatives from 19 countries and regions including the United States, Brazil, Hong Kong, Macau and Taiwan — walked the finished deck. Taishan is the Jiangmen county with the largest and most widely scattered overseas population, and the provincial record of that visit is blunt about what it meant: the delegates “called on more overseas Chinese to return, invest and build together.” The appeal, in official media, was rendered as a simple hope — that the bridge gives the diaspora a more convenient road home (回家).

That is the inversion the whole lane rests on. The infrastructure built by the state, in two years, now runs across the very water that once took a generation’s worth of emigrants away. The port that marked the beginning of the exodus and the bridge that marks its end sit within sight of each other. Both are, in their own way, monuments to the same fact: that Wuyi’s story has always been written across the water.

Going Home in Half an Hour

For the people this site is written for, the concrete question underneath all the policy language is simple: what does this mean for the trip home?

The answer is that the geography of the roots trip has quietly changed. A visitor flying into Macau or Zhuhai can now be in Taishan in thirty minutes, or in the Diaolou country around Kaiping not long after — where the pre-2024 journey was an hour’s detour or a ferry. Hong Kong and Macau, the two cities that once loomed as the departure gates for Wuyi’s emigrants, are now an hour’s drive from the ancestral villages they supplied with so many of their residents. In practical terms, the “longest” leg of a roots trip is no longer the last one; it is the flight. The ground game — how to get around once you’re on the ground, what the trip costs, and the Taishanese phrases worth learning before you meet relatives — now sits on top of a journey that just got structurally shorter. The change shows up in small ways: the old advice to land in Guangzhou and budget a full day to reach the village no longer holds, because a morning flight into Macau can put you in Taishan for lunch, and the drive from Zhuhai’s airport to Doushan is now shorter than the taxi queue at some bigger hubs.

None of this erases the older distances. The bridge shortens a drive; it does not shorten the gap between a diaspora family and the village it left three generations ago. But it does change one thing that the letters home were never able to: the sheer friction of the return. The remittance letters that crossed the Pacific carried money and news but not a body. The bridge carries the body back — and a family reunion that once had to be planned around a boat schedule is now a matter of a rental car and a map.

The Same County, One Generation Apart

There is a way to read the last two years as the closing of a strange arc.

The same counties that sent laundrymen and railroad workers to North America now host the world’s largest neutrino detector — JUNO, buried seven hundred metres under Kaiping — and run the EPR nuclear reactors of the Taishan Nuclear Power Plant on the coast at Chixi. The Huangmaohai corridor is the third leg of that arc: the region that once exported people now imports physicists and, increasingly, capital. Emigration country has become, in the space of a single generation of infrastructure, a science-and-logistics destination.

There is a symmetry here worth naming. The first generation of emigrants powered the goldfields, the railroads and the laundries of the Pacific rim; the money they wired home built schools and watchtowers. A century later, the region runs on the reverse flow — the physics, the reactors and the bridges are imported, in the sense that the world comes to Wuyi to use them, rather than Wuyi sending its people out to be used by the world. It is not a moral reversal; the old hardships are not redeemed by a bridge. But it is a structural one, and it happened inside the working lifetime of a single grandparent.

It would be tidy to call this a redemption story. It is not quite that. The villages still thin out as young people leave for the cities; the diaolou that stand as monuments to remittance are half-empty, their descendants scattered across three continents. What the corridor changes is not the past — it is the reach of the place. A century ago, Wuyi’s connection to the wider world ran one way, through the people who left. Now the wider world runs into Wuyi along a bridge, and the physics is reversed: the village is no longer only a point of departure.

Where the Bridges End

The honest limits deserve stating.

Nobody searching the internet in large numbers is yet looking for “the dual-corridor era” — this is a story about what is happening now rather than a proven search topic, and whether readers find it will become clear over the coming months. The past still does the heavy lifting for this site’s readers; the migration and surname and village stories remain the reason people arrive. What a piece like this can do is answer a question the archive cannot: what is my family’s region like now?

And the corridor itself is not finished. The Zhongshan–Kaiping Expressway and the Shenzhen Airport Jiangmen air-port project are already in place; the deeper integration — the industries that choose to land on the west bank, the diaspora capital that does or does not follow the qiaoling home — will unfold over the next decade, not the next quarter. The bridges are the hardware. The bridge economy is still being negotiated.

The Voyage Became a Drive

There is a scene worth holding onto from the coverage of the Huangmaohai opening: the 35 qiaoling, standing on a bridge deck over open water, looking west toward the villages their families left from.

For most of a century, the defining fact of Wuyi’s relationship to the world was that leaving it was hard and returning to it was harder. A family separated by the Pacific stayed separated by weeks of sea. Now the two crossings have collapsed that distance to a half-hour drive — and the region, in its own official language, has declared a new era.

“Going home” was always the emotional pole of the diaspora story. The bridges don’t change what home means. They change how close it is. And for a reader whose family once measured that closeness in months at sea, that is not a small thing. A bridge is, in the end, only steel and concrete and time saved. What it carries — who crosses it, and in which direction — is the story the next decade will write.

Continue Reading

• JUNO: The World’s Largest Neutrino Detector, 700 Metres Under Kaiping — science has come to the emigration country.
• Duanfen, Taishan: The Emigrant Town That Built a School — the town at the first port of Cantonese emigration.
• Getting Around Wuyi: Trains, Buses, and Hiring a Driver — the ground game, now thirty minutes shorter.
• Taishanese Phrases: 30 Things to Say to Your Wuyi Relatives — arrive able to greet them.
• Budgeting Your Wuyi Roots Trip: What It Actually Costs — the numbers behind the trip.

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Sources

• Guangdong Provincial Government — “Huangmaohai Cross-Sea Corridor opens to trial traffic” (2024-12-12). gd.gov.cn
• Jiangmen Municipal Government — “Huangmaohai builds the world’s largest-span three-pylon road cable-stayed bridge” (2024-12-06). jiangmen.gov.cn
• The Paper (澎湃新闻) — “Shenzhen–Zhongshan Link officially opens” (2024-06-30). thepaper.cn
• Jiangmen Municipal Government — “New chapters as continuations: the Huangmaohai crossing opens, Taishan 30 minutes to Zhuhai” (2025-01-01). jiangmen.gov.cn
• Panyu District Government — “Huangmaohai crossing opens, Jiangmen’s leapfrog opportunity stacks up” (2024-12-30), incl. the 35 qiaoling visit. panyu.gov.cn
• Taishan Municipal Government — “Chixi Town: Taishan’s only Hakka-settled town, gateway at the Jiangmen exit” (2024-07-26). cnts.gov.cn
• Jiangmen Municipal Government — “Huangmaohai bridge closes, Shenzhen–Zhongshan passes acceptance: the dual-channel opportunity” (2024-06-19). jiangmen.gov.cn
• CNR (China National Radio) — “World’s largest-span road three-pylon cable-stayed bridge closes” (2024-06-21). cnr.cn