September 23, 3:25 a.m.，The last box girder of the main line of Ningshao expressway across the Shichang Railway was successfully erected in place.，It marks the completion of the main line of Ningshao Expressway.。

Ningshao expressway crosses the existing Shichang Railway twice，Wherein, the main line is at the mileageK5+200.6 across the Shichang Railway in Henglongqiao Town, Heshan District, Yiyang City，The bridge is located between Yiyang East Railway Station and Ningxiang Railway Station.，Arrange 8 pieces of 35 pieces by frame across the iron spanmBox Girder，Maximum beam weight 140t，The 180t bridge girder erection machine is used for box girder erection.。

Shichang Railway is a national railway.IClass I busy trunk line，Designed as an electrified railway，A double-track railway，It is an important part of Hunan railway network.，To ensure construction safety，According to the careful arrangement of the railway department，The construction skylight period is set at 1 a.m.:35 points to 2:45 points，The construction must be completed safely within the specified time.，High risk of construction safety、The accuracy requirement is high，The technical difficulty of the whole line is the highest.、Most risk factors、The most concerned control link of all parties。

During construction，Ningshao First Bid Project Department of CCCC Third Highway Engineering Co., Ltd. uses adjacent span box girder for erection，Carry out the simulation drill of the whole construction process for many times，The process and time control of each process are summarized and analyzed.、Optimize；When erecting the iron crossing beam slab，Strict organization of site management personnel and operation personnel，Do a good job of safety technical disclosure，To the bridge erecting machine、Beam carrier、Comprehensive and meticulous inspection of large equipment such as cranes，Ensure the safety of each process、The quality meets the requirements，Successfully completed the erection of all eight iron box girders.。The successful completion of the beam and slab erection，It will provide favorable help for the smooth implementation of the beam and slab erection task of the Henglong Bridge Connection Line across the Shichang Railway in the next step.。

Li Zhiguo, project manager of Ningshao First Bid of CCCC Third Highway Engineering Co., Ltd., said.，The expressway from Ningxiang to Shaoshan is a key project in the province.，To achieve the goal of opening to traffic by the end of the year，The First Bid Project of CCCC Third Highway Engineering Co., Ltd. seriously implements the Hunan Provincial Party Committee、Decision-making and deployment of provincial government，Strengthen construction organization and resource allocation，Pay close attention to the progress、Quality and safety，Resolutely ensure that the deadline will be met。The main line of Ningshao Expressway crossing Shichang Railway Bridge is the control project of this project.。With the strong support of Guangzhou Railway Group Company，Changsha Railway Construction Co., Ltd., a professional subcontractor, plays its own advantages，Successfully completed the task of erecting the box girder across the railway at 4:00 this morning.，It has laid a solid foundation for achieving the goal of opening to traffic set by the provincial Party committee.。

It is understood that，Ningshao Expressway will be completed and opened to traffic by the end of 2022.。Ningshao expressway is located in the functional expansion area of Changsha-Zhuzhou-Xiangtan urban agglomeration.，The overall trend is north-south.，Connect with the completed Changyi Expressway，It is an important north-south transport corridor for Hunan Province to implement the strategic plan of Changsha-Zhuzhou-Xiangtan integration.。After the project is completed and opened to traffic，It will build a higher platform for regional tourism development，To improve regional traffic conditions，Alleviate the section from Changsha City to Ningxiang of Changyi Expressway、Traffic Pressure of Changsha Ring Expressway，It is of great significance to promote the economic and social development of Changsha-Zhuzhou-Xiangtan urban agglomeration.。Source：Red Net