On September 20, after 10 hours of intensive work, the concrete pouring for Block 0 of the main pier of the No. 10 continuous girder of the Huodibao double-track extra-large bridge on Section 3 of the Yuwanzhou-Wanzhou High-Speed Railway (Yuwang HSR) undertaken by China Railway No. 3 Engineering Group was successfully completed, marking that the bridge engineering construction of Section 3 of the Yuwang HSR has shifted to the superstructure construction stage.

The Huodibao double-track extra-large bridge has a total length of 1,024.11 meters, with a total of 232 pile foundations and 29 pier columns, and the tallest pier is 40 meters. The completed pouring this time was for Block 0 of the No. 10 main pier of the bridge's continuous girder, with a designed concrete volume of 335.82 cubic meters.

According to reports, the "Block 0" of a continuous girder is the first construction unit poured during the segmental construction of the bridge's continuous girder. It is located at the top of the main pier and is the first segment extending from the pier body to both sides, as well as a key node in continuous girder construction. After the poured concrete sets, the cantilever casting method with form travelers will be adopted for subsequent construction, gradually extending from Block 0 as the foundation and support point toward both ends, ultimately completing the construction of the bridge's continuous girder.

The Huodibao double-track extra-large bridge is the first bridge in the entire Yuwang HSR bridge engineering to complete concrete pouring for Block 0 of a continuous girder main pier. The smooth completion of this pouring construction has accumulated valuable experience for the continuous girder construction of bridges on the Yuwang HSR.

Section 3 of the Yuwang HSR undertaken by China Railway No. 3 Engineering Group has a total length of 36.013 kilometers and is located within Zhongxian County and Fengdu County. It includes subgrade engineering, bridge and culvert engineering, tunnel engineering, track engineering, signaling engineering, etc., with bridges and tunnels accounting for 76% of the total.