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"slug": "g15-shenyang-haikou-expressway",
"title": "G15 Shenyang–Haikou Expressway",
"updated": "2026-10-15",
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"excerpt": "The G15 Shenyang–Haikou Expressway, known as the Shenhai Expressway, is a national expressway in China running along the coast from Shenyang, Liaoning, to Haikou, Hainan.",
"snippet": "The G15 Shenyang–Haikou Expressway, known as the Shenhai Expressway, is a national expressway in China running along the coast from Shenyang, Liaoning, to Haikou, Hainan.",
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"markdown": "# G15 Shenyang–Haikou Expressway\n\n**G15 Shenyang–Haikou Expressway** (沈海高速, G15 沈阳–海口高速公路) is a national expressway in China that runs north to south along the coast from Shenyang, Liaoning, to Haikou, [Hainan](https://www.edgepedia.org/hainan). It is one of the two-digit north–south trunk routes of the National Expressway Network, which is why it carries the number G15 rather than a four-digit city-ring or connector number[1](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/glj/202006/t20200623_3312189.html). The route links the major coastal control points of Dalian, Yantai, Qingdao, Shanghai, Ningbo, Fuzhou, Shenzhen, Guangzhou, Zhanjiang, and Haikou[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/).\n\n| Key fact | Detail |\n|---|---|\n| Route type | National north–south trunk expressway from Shenyang to Haikou, numbered G15 under the two-digit rule for north–south and east–west national expressways[1](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/glj/202006/t20200623_3312189.html) |\n| Major control points | Dalian, Yantai, Qingdao, Shanghai, Ningbo, Fuzhou, Shenzhen, Guangzhou, Zhanjiang, and Haikou[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/) |\n| Shanghai section | About 91.6 km from the Jiangsu border to the Zhejiang border through Jiading, Qingpu, Minhang, Songjiang, and Jinshan districts[3](https://jtw.sh.gov.cn/jyjabljg/20210906/6aa587f436074b6c99d3a9d1c1c658da.html) |\n| Section standards | Published sections range from the 13.727 km, six-lane Haikou section at 80 km/h to the 131.45 km, eight-lane Nan'cun–Qingdao/Rizhao boundary section at 120 km/h[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/) |\n| Traffic load | The Rizhao section carries roughly 20,000–30,000 vehicles per day, rising to about 100,000 on holidays[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/) |\n| Expansion program | Large-scale reconstruction and expansion is under way in Shanghai, Zhejiang, Fujian, and Guangdong, including a RMB19,230 million Shenzhen project approved in June 2025[4](https://www1.hkexnews.hk/listedco/listconews/sehk/2025/0916/2025091600576.pdf) |\n| Cross-sea gaps | The route uses the Hangzhou Bay bridge in Zhejiang and ferry crossings across the Bohai Strait and Qiongzhou Strait[5](https://news.cnnb.com.cn/system/2026/02/18/030746540.shtml) |\n\n## Route and numbering\n\nThe Ministry of Transport's numbering scheme gives capital radial routes one-digit numbers and north–south and east–west trunk routes two-digit numbers; the Shenyang–Haikou route is G15, alongside examples such as G20 Qingdao–Yinchuan[1](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/glj/202006/t20200623_3312189.html). Because the alignment follows the coast, it crosses several climate regions, and rainfall intensity, terrain, road width, and gradients differ significantly between sections[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/).\n\nIn Shanghai, the G15 is described by the Shanghai Municipal Transportation Commission as an important north–south trunk road of the national expressway system. The Shanghai section runs about 91.6 km from the Jiangsu boundary in the north to the Zhejiang boundary in the south, passing through Jiading, Qingpu, Minhang, Songjiang, and Jinshan districts, and connects to Jiangsu in the north and Zhejiang in the south[3](https://jtw.sh.gov.cn/jyjabljg/20210906/6aa587f436074b6c99d3a9d1c1c658da.html).\n\n## Major sections and standards\n\nPublished project data show how widely the standards vary along the corridor. The Nan'cun to Qingdao/Rizhao boundary widening section in Shandong is 131.45 km long, designed as an eight-lane expressway with a 120 km/h design speed. In Zhejiang, the Ningbo stretch runs 69.055 km, likewise carries eight lanes, and features 41–42 m roadbeds permitting design speeds between 100 and 120 km/h. Stretching 13.727 km, the Haikou stretch offers six lanes, speeds designed up to 80 km/h, and a roadbed 33.5 m wide.[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/)\n\n**Shanghai.** The Shanghai section is divided for implementation into the Jiali, Jiajin, and Chusheng sections. The Jiali section widening began construction after the city launched it in 2019, and the Jiajin section (between the G1503 and S32 roads) was included in the 14th Five-Year Plan with project proposal preparation under way[3](https://jtw.sh.gov.cn/jyjabljg/20210906/6aa587f436074b6c99d3a9d1c1c658da.html). In Songjiang's Xinqiao town, local congestion around the G15 is severe, with morning peaks from 7:00 to 9:00 toward the west and evening peaks from 16:00 to 18:00 toward the east[6](https://qrd.songjiang.gov.cn/contents/131/12651.html). In Qingpu, plans call for raising the elevated G15 and adding a ground-level auxiliary road system as part of the Hongqiao International Opening-up Hub strategy[7](https://www.shqp.gov.cn/shqp/zwgk/tabl/sbljg/20220708/950654.html). On 31 July 2025 the Xinliuhe Bridge on the Jiali section, the boundary-river bridge between Shanghai and Jiangsu on the connection to the Huzhao Expressway, opened after widening from six to eight lanes, with the deck widened to 49.25 m[8](https://www.shanghai.gov.cn/nw31406/20250813/50053c59d0f44dfb9baaf98aa2610271.html).\n\n**Zhejiang.** The Yongtaiwen (Ningbo–Taizhou–Wenzhou) line of the G15 is being rebuilt in multiple sections. The Wenzhou Beibaixiang to Nanbaixiang section, approved by the Ministry of Transport in 2023, runs 14.783 km along the existing expressway with four interchanges and a total investment estimate of RMB6.58978 billion, with completion planned for the end of 2027[9](https://www.wzcd.cn/contents/26/68993.html). Zhejiang's 2025 major project list also includes G15 reconstruction sections at Ningbo Xiwu to Mayinling, Sanmen Mayinling to Linhai Qingling, and several Wenzhou segments of the Yongtaiwen line[10](https://fzggw.zj.gov.cn/module/download/downfile.jsp?classid=0&filename=e0c79ddde9b34f7b82095ea34f426852.pdf).\n\n**Fujian.** The Fuding Yangzhong to Xiapu Sansha expansion in Ningbo (Fujian) was approved in July 2026: about 40.3 km, with a new six-lane alignment at 100 km/h for the northern part and eight-lane widening of the existing road at 100 km/h for the southern part, a total investment estimate of RMB8.16 billion, and a 48-month construction period[11](https://fgw.fujian.gov.cn/zfxxgkzl/zfxxgkml/zdjsxmpzhss/202607/t20260708_7175476.htm). Farther south, the Zhangzhou Longhai to Zhao'an expansion runs 132.747 km to the [Guangdong](https://www.edgepedia.org/guangdong) boundary at a 120 km/h design speed, combining 83.503 km of new six-lane road with 49.244 km of eight-lane widening[12](https://gcjyzx.zhangzhou.gov.cn/gcxx/001001/001001001/20260318/e9e125ec-ac42-4284-ae92-2009cfa600df.html). The Quanzhou–Xiamen section expansion, listed among the first batch of key projects of the 14th Five-Year Plan for building a transport power, was endorsed in principle in May 2025 under a \"smart expansion + section expansion + node reconstruction\" scheme[13](https://jtyst.fujian.gov.cn/zwgk/jtyw/gzdt/202505/t20250515_6914559.htm).\n\n**Shenzhen.** The Jihe Expressway, an integral part of the G15, runs about 43 km from He'ao Interchange in Longgang District to Hezhou Interchange in Bao'an District[4](https://www1.hkexnews.hk/listedco/listconews/sehk/2025/0916/2025091600576.pdf). Shenzhen Expressway intends to invest approximately RMB19,230 million in reconstructing and expanding the He'ao to Shenzhen Airport section, and the 47.07 km Shenzhen section of that work was approved by the Guangdong Provincial Development and Reform Commission in June 2025[4](https://www1.hkexnews.hk/listedco/listconews/sehk/2025/0916/2025091600576.pdf). The national plan describes this section as the east–west central axis of the Guangdong–Hong Kong–Macao Greater Bay Area: it is being rebuilt as a two-level composite corridor, with a single-tube double-deck shield tunnel passing under Longgang new town, the first such application in Chinese expressway construction[14](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/zhghs/202205/P020240709556037645191.pdf).\n\n## Cross-sea links and terminal sections\n\nThe coastal alignment relies on several water crossings. At [Hangzhou Bay](https://www.edgepedia.org/hangzhou-bay) in Zhejiang, holiday traffic management on the G15 bridge has imposed speed limits of 80 km/h on the bridge and 100 km/h on its south connection during peak-flow responses[5](https://news.cnnb.com.cn/system/2026/02/18/030746540.shtml). Across the Bohai Strait between Dalian and Yantai, no fixed road link exists, and the corridor's northern end depends on ferry services; a proposed cross-strait tunnel remains at the study stage[15](https://www.engineering.org.cn/sscae/EN/PDF/1160098132728012950). At the southern end, vehicles reach Haikou by ro-ro ferry across the [Qiongzhou Strait](https://www.edgepedia.org/qiongzhou-strait), whose service is periodically suspended and restored around tropical weather systems[16](https://zjhy.mot.gov.cn/zzhxxgk/jigou/jsdw/202508/t20250819_4175028.html).\n\nIn Haikou itself, the G15 section includes a ground-level auxiliary road built alongside the elevated mainline, intended to connect with the G98 ring expressway and improve access to the urban area[17](https://www.hkexnews.hk/listedco/listconews/sehk/2023/0912/2023091200347.pdf).\n\n## Traffic and congestion\n\nThe corridor carries heavy and growing demand. Published information for the Rizhao section reports approximately 20,000–30,000 vehicles per day, with holiday traffic reaching as high as 100,000 vehicles[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/). On the Yongtaiwen line in Ningbo, police estimated about 40,000 vehicles per day during the 2013 National Day holiday, up 5 to 7 percent year on year, with peak days possibly reaching 65,000 to 70,000[18](https://news.cnnb.com.cn/system/2013/09/28/007861014.shtml). Real-time reports from the Shenzhen section show recurring peak-hour congestion near interchanges such as Paihang, Qinghu, and He'ao, with queues of 0.5 to 9 km and average speeds as low as about 10 km/h during incidents[19](https://www.modiauto.com.cn/lukuang/100.html). The Shanghai commission states that traffic on the G15 has grown rapidly with Yangtze Delta integration and that congestion on holidays has become routine, which is the basis for its widening program[3](https://jtw.sh.gov.cn/jyjabljg/20210906/6aa587f436074b6c99d3a9d1c1c658da.html).\n\n## Reconstruction and expansion program\n\nThe dominant development on the G15 since the early 2020s is capacity expansion of busy sections. In Shandong, a safety and resilience improvement project covers the [Sutong Bridge](https://www.edgepedia.org/sutong-bridge) section in Jiangsu[20](https://jsggzy.jszwfw.gov.cn/jyxx/003002/003002003/20250822/8dfe3bd9e3754d13a756cf99eef07210.html), and the Nan'cun to Qingdao/Rizhao boundary widening is designed at eight lanes and 120 km/h[2](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/). In Yantai, the municipal plan includes reconstruction of the G15 Fushan toll station to improve service to urban traffic[21](https://www.yantai.gov.cn/art/2021/10/21/art_99959_18808.html). In Fujian, the Quanzhou–Xiamen expansion will place elevated carriageways on both sides of the existing expressway, half cantilevered over the hard shoulder and half outside the existing roadbed, with conversion ramps between levels[14](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/zhghs/202205/P020240709556037645191.pdf), and the project appears in Fujian Expressway's 2024 annual report as work in progress[22](https://big5.sse.com.cn/site/cht/www.sse.com.cn/disclosure/listedinfo/announcement/c/new/2025-04-19/600033_20250419_TK7X.pdf). In Shenzhen, the He'ao–Shenzhen Airport project combines the double-deck tunnel with a ground-level expressway[14](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/zhghs/202205/P020240709556037645191.pdf). The Fuding–Xiapu expansion is explicitly included in the national program for expanding busy national expressway sections under the 15th Five-Year Plan[11](https://fgw.fujian.gov.cn/zfxxgkzl/zfxxgkml/zdjsxmpzhss/202607/t20260708_7175476.htm).\n\n## References\n\n1. [解讀“國家高速公路網命名與編號實施工作”, Ministry of Transport](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/glj/202006/t20200623_3312189.html)\n2. [Project Reference: G15 Shenhai Expressway Drainage System Application, MEA (China Municipal Engineering Association)](https://www.cmsa-mea.com/project-reference-g15-shenhai-expressway/)\n3. [市交通委对市十五届人大五次会议第0107号代表建议的答复, Shanghai Municipal Transportation Commission](https://jtw.sh.gov.cn/jyjabljg/20210906/6aa587f436074b6c99d3a9d1c1c658da.html)\n4. [Management Discussion and Analysis, Shenzhen Expressway (HKEX filing)](https://www1.hkexnews.hk/listedco/listconews/sehk/2025/0916/2025091600576.pdf)\n5. [滚动：杭州湾跨海大桥大流量一级预案结束, 中国宁波网](https://news.cnnb.com.cn/system/2026/02/18/030746540.shtml)\n6. [关于支持G15沈海高速嘉金段改扩建工程跨民益路段改造的建议, Songjiang District People's Congress](https://qrd.songjiang.gov.cn/contents/131/12651.html)\n7. [对市十五届人大六次会议第0264号代表建议的答复, Qingpu District People's Government](https://www.shqp.gov.cn/shqp/zwgk/tabl/sbljg/20220708/950654.html)\n8. [G15嘉浏段重要节点新浏河大桥建成通车, Shanghai Municipal Government](https://www.shanghai.gov.cn/nw31406/20250813/50053c59d0f44dfb9baaf98aa2610271.html)\n9. [甬台温高速公路（G15沈阳至海口国家高速公路）改扩建工程温州北白象至南白象段招标公告, Wenzhou Communications Development Group](https://www.wzcd.cn/contents/26/68993.html)\n10. [浙江省扩大有效投资“千项万亿”工程2025年重大建设项目实施计划项目表, Zhejiang Development and Reform Commission](https://fzggw.zj.gov.cn/module/download/downfile.jsp?classid=0&filename=e0c79ddde9b34f7b82095ea34f426852.pdf)\n11. [福建省发展和改革委员会关于G15沈海高速公路宁德福鼎洋中至霞浦三沙段扩容工程可行性研究报告的函, Fujian Development and Reform Commission](https://fgw.fujian.gov.cn/zfxxgkzl/zfxxgkml/zdjsxmpzhss/202607/t20260708_7175476.htm)\n12. [沈海线漳州龙海至诏安段扩容工程路基土建工程保险服务招标公告, Zhangzhou Engineering Project Trading Center](https://gcjyzx.zhangzhou.gov.cn/gcxx/001001/001001001/20260318/e9e125ec-ac42-4284-ae92-2009cfa600df.html)\n13. [G15沈海高速泉厦段扩容工程工可修编报告咨询评估会在北京召开, Fujian Provincial Department of Transportation](https://jtyst.fujian.gov.cn/zwgk/jtyw/gzdt/202505/t20250515_6914559.htm)\n14. [关于扎实推动“十四五”规划交通运输重大工程项目实施的通知（节选）, Ministry of Transport](https://big5.mot.gov.cn/gate/big5/xxgk.mot.gov.cn/2020/jigou/zhghs/202205/P020240709556037645191.pdf)\n15. [渤海海峡跨海通道桥隧方案比选研究, 中国工程科学 (Strategic Study of CAE)](https://www.engineering.org.cn/sscae/EN/PDF/1160098132728012950)\n16. [琼州海峡客滚运输复运信息, 交通运输部珠江航务管理局](https://zjhy.mot.gov.cn/zzhxxgk/jigou/jsdw/202508/t20250819_4175028.html)\n17. [Hainan Meilan International Airport Company Limited Interim Report 2023, HKEX](https://www.hkexnews.hk/listedco/listconews/sehk/2023/0912/2023091200347.pdf)\n18. [高速交警发布G15沈海高速甬台温线国庆出行红色预警, 中国宁波网](https://news.cnnb.com.cn/system/2013/09/28/007861014.shtml)\n19. [G15沈海高速深圳段最新路况实时查询, 无敌电动网](https://www.modiauto.com.cn/lukuang/100.html)\n20. [G15沈海高速苏通大桥段安全韧性提升工程设计项目, 江苏省公共资源交易网](https://jsggzy.jszwfw.gov.cn/jyxx/003002/003002003/20250822/8dfe3bd9e3754d13a756cf99eef07210.html)\n21. [烟台市“十四五”综合交通运输发展规划, 烟台市人民政府](https://www.yantai.gov.cn/art/2021/10/21/art_99959_18808.html)\n22. [福建发展高速公路股份有限公司2024年年度报告, 上海证券交易所](https://big5.sse.com.cn/site/cht/www.sse.com.cn/disclosure/listedinfo/announcement/c/new/2025-04-19/600033_20250419_TK7X.pdf)\n\n---\n*Topic: Encyclopedia › Technology and the built world › Architecture, buildings, and civil works › Civil and water works › Tunnels › Named tunnels and people › Proposed tunnel projects › Proposed tunnel projects — overview and cross-regional schemes*\n\n*Initially written Sep 17, 2026 · Reviewed: Oct 15, 2026 · Edited: Oct 15, 2026 · Last review: Oct 15, 2026*\n\n*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*\n\nLicense: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license\n",
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"speakable": "The G15 Shenyang–Haikou Expressway, known as the Shenhai Expressway, is a national expressway in China running along the coast from Shenyang, Liaoning, to Haikou, Hainan."
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