Capping, breakthrough...
These transportation projects
have recently made new progress
All three cable towers of Dongwuyang Grand Bridge on Ningde-Shangrao Expressway capped
On December 9, with the successful capping of the last cable tower section, construction of the Dongwuyang Grand Bridge entered a new stage. The three cable towers, shaped like "large yellow croakers," now stand fully above the sea surface. The unique artistic design of the towers complements Xiapu County's reputation as the "Hometown of Chinese Ecological Large Yellow Croaker," showcasing regional cultural characteristics.
As a controlling project of the Ningde-Shangrao Expressway, the Dongwuyang Grand Bridge has a total length of 2,546.6 meters and adopts an extradosed cable-stayed bridge design, with a navigable-span bridge of 560 meters. The bridge's cable towers are of variable cross-section rectangular solid structure, constructed in 7 segments, with a tower height of 33.5 meters above the deck, consolidated with the box girder and equipped with lightning protection devices. Cable tower construction faced challenges including complex cross-section variations, high precision requirements for cable saddle embedment, difficult alignment control, and high safety risks. To smoothly advance the construction task, the project team optimized the construction plan through scientific planning and precise measures, strictly controlled construction procedures, and ensured high-quality completion of the cable towers.
The successful capping of the three cable towers means the focus of bridge construction has shifted to the main girder segment construction and stay cable installation. At this point, the overall progress of the Dongwuyang Grand Bridge has exceeded 75%, bringing the project one step closer to completion and opening to traffic.
Huyu Grand Bridge and Menqi Bridge on Ningde-Shangrao Expressway achieve full-width completion
On December 10, the prefabricated T-girders of both the Huyu Grand Bridge and Menqi Bridge were fully erected on the same day, successfully completing the target milestone of the 100-day sprint. This not only paved the way for the comprehensive construction of subsequent bridge ancillary works but also laid a solid foundation for the opening and operation of the Ningde-Shangrao Expressway.
The Huyu Grand Bridge has a total length of 2,018 meters and is designed with a total of 445 prefabricated T-girders of 35m and 40m. The Menqi Bridge has a total length of 457 meters and is designed with a total of 150 prefabricated T-girders of 30m.
The Ningde-Shangrao Expressway project is the first expressway project to commence construction in our province during the "14th Five-Year Plan" period, and is also a key component of the "National Expressway Network" and the "First Horizontal" line of the province's expressway network. After completion and opening to traffic, it will become an economic artery connecting the Sandu'ao Port Area with Ningde, Fu'an, Fuding and other old revolutionary base areas, injecting strong momentum into coordinated regional economic development and holding important strategic significance for promoting the province's economic development and regional coordinated development.
Total length 3,975 meters! Right tube of this extra-long tunnel in Youxi, Sanming successfully breaks through
On December 12, with the successful breakthrough of the last layer of rock and soil, the right tube of the Gongshan Tunnel of the Youxi West Interchange and Connecting Line Project of the Shaxian-Xiamen Expressway was successfully holed through.
The Gongshan Tunnel is a separated tunnel, with a left tube length of 3,970 meters and a right tube length of 3,980 meters. It is an extra-long tunnel and a controlling milestone of the Youxi West Interchange and Connecting Line Project of the Shaxian-Xiamen Expressway, as well as an important controlling project of Section B of the Youxi Xiacun to Yuchi Highway of the Hengwu Line (S308) of the national and provincial trunk road network.
The Youxi West Interchange and Connecting Line Project of the Shaxian-Xiamen Expressway has a total length of approximately 25.67 kilometers and is divided into two sections for construction: the Taixi to Chengnanyuan section and the Chengnanyuan to Expressway Interchange section. Among them, the Chengnanyuan to Expressway Interchange section (also Section B of the Hengwu Line) has completed the asphalt pavement paving of the Xinlian section, the breakthrough of the right tube of the Gongshan Tunnel (left tube completed 3,718 meters), the excavation of the Zhengyang Tunnel, and 18 pile foundations of the Bushiyang Middle Bridge, laying a solid foundation for achieving the main works target.
After the project is completed, it will facilitate residents in the Chengnanyuan Economic Development Zone, Taixi Township and surrounding areas to access the expressway through the Youxi West Interchange of the Shaxian-Xiamen Expressway within 30 minutes. At the same time, the project will broaden the urban layout of Youxi, Sanming, open up the urban transit line, and effectively alleviate traffic pressure in the main urban area.
New progress on the Luoyuan section highway project of National Highway G228
On December 6, the Provincial Highway Center held a preliminary design review meeting in Luoyuan County for the Luoyuan Songshan Jitou to Xuanyu section highway project of National Highway G228. Experts and representatives at the meeting unanimously agreed that the preliminary design of the project is generally reasonable and the design depth meets the requirements, and agreed to pass the preliminary design review.
The project starts at the intersection of National Highway G104 and National Highway G228 in Jitou Village, Luoyuan County, and is routed along the inner subgrade of the existing reclamation embankment. After reaching Sanyu, a new 486-meter bridge will be built upstream of the existing sluice to cross Songshan Lake to Eryu, intersecting at grade with the proposed Tongyu Road, with the endpoint connecting to the existing National Highway G228. The route has a total length of 2.23 kilometers, adopts the technical standard of a first-class highway with urban road functions, with six lanes in both directions, and a total project investment of approximately 345 million yuan.
After the project is completed, it will further improve the layout of the ordinary national highway network within Fuzhou and the regional port collection and distribution system, and is of great significance for enhancing the traffic capacity of the national highway and promoting the in-depth integrated development of transportation and tourism.
Both tubes of the Jiufeng Tunnel on National Highway G205 holed through
Recently, the 1,411-meter left tube of the Jiufeng Tunnel in Yanping District, Nanping City, on National Highway G205 was holed through. At this point, both tubes of the Jiufeng Tunnel have been fully holed through, laying a solid foundation for subsequent opening to traffic.
As an important transportation infrastructure in the Yanping urban area, the Jiufeng Tunnel connects to the Minjiang Bridge in the north and National Highway 316 in the south. After completion, it will greatly shorten the travel time from Gongye Road in the urban area to National Highway 316, open up a new route corridor for transit freight traffic in the Yanping urban area, effectively alleviate traffic pressure in the central urban area, and improve urban traffic efficiency.
At present, the Jiufeng Tunnel project department is making full use of the current golden construction period to accelerate construction progress, injecting new vitality into the economic and social development of Yanping District, Nanping City, and providing citizens with a more convenient and efficient transportation environment.
This task of the Zhenghe-Yong'an Expressway Dehua Section Project has been successfully completed
On December 6, Contract Section A1 of the Zhenghe-Yong'an Expressway Dehua Section Project reached a key victory moment, as Precast Girder Yard No. 2 completed the casting of the last 40-meter T-girder. This marks the completion of all 629 T-girders prefabricated at Precast Girder Yard No. 2, laying a solid foundation for subsequent T-girder erection, bridge deck system construction, and the opening of the entire line to traffic.
Precast Girder Yard No. 2 covers an area of approximately 9,802 square meters and undertakes the T-girder prefabrication tasks for important bridges including the Shizhu Grand Bridge, Hunei Grand Bridge, Nanchéng Grand Bridge, Longbian Grand Bridge, and Ramp A and Ramp C bridges of the Nanchéng Service Area. Since the successful casting of the first precast T-girder on March 8, a total of 26,427 cubic meters of concrete has been poured over 273 days of intensive construction.
During construction, the project innovatively adopted assembled precast T-girder pedestals, new slider-positioned web formwork frames, embedded square grout-stop strips, etc., improving construction efficiency and quality. In terms of rebar processing and T-girder prefabrication, MEP intelligent rebar bending machines, fully automatic CNC stirrup bending machines, intelligent tensioning machines, intelligent grouting machines, and automatic spray curing facilities were introduced. The introduction of these digital devices significantly improved construction quality and efficiency. At the same time, the project team held multiple special meetings and discussions on each technical difficulty and complex procedure to ensure the T-girders are "solid inside and beautiful outside," achieving the goal of a "Safe Century Quality Project."
As of now, Contract Section A1 has completed a cumulative total of 1,204 girders, accounting for 92% of the total 1,307 girders. As an important component of regional transportation development, the Zhenghe-Yong'an Expressway Dehua Section Project will further promote regional connectivity and economic and social development after completion, and is of great significance for enhancing the public's travel experience.
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