Recently，The left side of the Ba River Bridge of Cangba Expressway, supervised by the supervision company of the Provincial Highway Design Institute, was successfully closed.。Bahe River Bridge is the longest single span continuous rigid frame bridge in Cangba Expressway.，Total length 504.5 meters，The maximum bridge height is 75 meters.，The main bridge adopts(104+185+104)Meters prestressed concrete continuous rigid frame，Double-limb thin-wall pier is adopted for the main pier。The bridge has a high technical standard.、The construction is difficult、High security risk，It is the key control project of the whole line.。To ensure the precise closure of the whole bridge，JL4. Director Office strengthens process control，Strengthen elevation and linear control，Assemble the formwork、Steel bar binding、Every process such as bellows installation is strictly checked.，Efficient、The closure of the main span is precisely realized.。（Sichuan Traffic News）