April 20，The First Double-deck Sea-crossing Highway Bridge in Fujian Province——Xidong Bridge officially opened to traffic in Xiamen, Fujian。This is also Xiamen City after the Dadeng Bridge and the Nangang Bridge.，The third important passage across the sea to and from Dadeng Island。

Xidong Bridge is 1 long..38 kilometers，It is part of Xidong Road, an important transportation project in Xiamen Xiang'an Airport Area, which was officially opened on the same day.，Its upper layer is a two-way six-lane vehicle bridge.、The lower layer is a pedestrian passage and a non-motorized vehicle lane.。 It is understood that，Xidong Road（Xiang'an South Road——Airport express section）It is built by Xiamen Municipal Group Development Company.。The project starts from Xiang'an South Road，Finally, the airport expressway，Total length 6.05 kilometers，Road width 50m，It is designed according to the standard of first-class highway and urban expressway.，Six lanes in both directions，The design speed is 80 kilometers per hour.，Citizens can save 20 minutes from Xiang'an South Road to Dadeng Island。

This upper and lower structure is both a point of view and a difficulty.。According to the construction process，The upper concrete structure of the main body of the project is constructed first.，This also foreshadows the erection of non-motorized lanes with steel box girders as the main body in the lower layer.，There is almost no space for hoisting.。

“Face the problem，The project department leads the construction with innovation，Design and manufacture an ultra-low integrated bridge erecting machine which can be normally transported and erected in a narrow and low space.，Steel box girders‘Plug’Into the lower main body。”Song Junjie, project manager of Xiamen Municipal Group Development Company, said.“Plug”，True to its name——The bridge erecting machine needs to be in a limited space.，Will be 42 in average length.The 5-meter steel box girder is accurately erected on the pier column，This is a test of the project construction in the machinery.、Electric appliance、Professional level in many fields such as control.。

BIMTechnical simulation analysis，Do enough preliminary inspection work to avoid beam collision；Simulate and guide construction in advance，Control the construction accuracy at the millimeter level。In the city airport area headquarters.、Overall planning of the Municipal Transportation Bureau and other departments、Coordinate，Xidong Road completed acceptance in December 2022，With the gradual improvement of supporting facilities，It was officially opened to the public recently.。

The benefits brought by the improvement of traffic pattern benefit the people's livelihood.，It has also been pressed for the construction of Xiamen Xiang'an Airport.“Accelerator key”——As the comprehensive traffic collection and distribution system of Xiamen Xiang'an Airport“Two high and two fast”An important link in，Xidong Road connects Xiang'an South Road in series、Binhai East Avenue and other important horizontal expressways in the city，And access to the airport expressway，Directly to the airport terminal。From now on，From Nan'an and other directions to Dadeng Island, there is no need to bypass the Dadeng Bridge.，It can be directly connected to Xidong Road from Maolin Interchange.，Almost“ Straight line ”There is no traffic light to enter Dadao Island.。

【Project business card】

Xidong Road starts from Xiang'an South Road.，Finally, the south section of the airport expressway.，Total length 6.05 kilometers，It is designed according to the standard of first-class highway and urban expressway.，Six lanes in both directions，The design speed is 80 kilometers per hour.，Along the line with Xiang'an South Road、Intersection node of Binhai East Avenue，Set up Maolin Interchange respectively、Grottoes Interchange Two Interchanges Interchange；Section crossing Nangang sea area，Set up Xidong Bridge to connect the two sides。