Following the successful rotation of the No. 1 swivel bridge over the Shide Railway on the Jinzhou bypass section of National Highway 307 on May 8, at 2:45 a.m. on May 28, the No. 2 separated overpass swivel bridge over the Shide Railway on the same project successfully rotated again. With a maximum span of 140 meters, this swivel bridge is the largest-span highway swivel bridge with a small curve radius in the province. The successful rotation of the bridge has laid a solid foundation for the project to be completed and opened to traffic in October this year.

The project manager from China Railway 14th Bureau Group, which undertook the construction, explained that this rotation involved the No. 2 separated overpass over the Shide Railway, with rotation angles of 42° and 36° for the left and right spans respectively. In the face of challenges such as the lateral eccentricity caused by the 600-meter curve radius of the rotating section and the offset of the centerline of the swivel bearings, on-site technical personnel had clear divisions of labor and each fulfilled their duties, monitoring and adjusting the rotation speed and bridge posture in real time, achieving the smooth rotation of the 10,000-ton bridge.

In coordination with the railway authorities, the rotation began at 1:45 a.m. on the 28th. At the command of the chief rotation commander, pulled by four 400-ton hydraulic jacks, the two cast-in-place swivel bridges with a total weight of 12,000 tons rotated slowly clockwise in sync at an angular speed of 1.2 degrees per minute for the left and right spans. Under the illumination of lights, the rotating bridges glided slowly over the Shide Railway like an eagle spreading its wings. After 60 minutes of continuous pulling and rotation, the two bridges successfully crossed the Shide Railway and were precisely positioned, facing the No. 1 swivel bridge over the Shide Railway 7 kilometers away. With a small curve radius of 600 meters and a maximum span of 140 meters, the bridge is a separated swivel bridge with the largest span and small curve radius in Hebei. The successful rotation of the bridge marks a major breakthrough in the key controlling works of the Jinzhou bypass section reconstruction project of National Highway 307.

The Jinzhou bypass section reconstruction project of National Highway 307 starts at the intersection of National Highway 307 and the East Ring Road of Jinzhou City and ends at the intersection with National Highway 307 north of Wangjiazhuang Village. The route is 11.597 kilometers long and is built to the standard of a two-way, four-lane first-class highway with a design speed of 80 kilometers per hour and a total investment of 718 million yuan.

To accelerate project construction, the Highway Construction and Development Center of the Shijiazhuang Municipal Transport Bureau, as the project management unit, carefully organized and planned and made every effort to advance project implementation. Together with all participating units, it worked in unity and close cooperation, coordinated with the railway authorities many times, and overcame difficulties such as land acquisition and demolition, railway-related approval procedures, and high-voltage line relocation, completing the preparatory work before rotation ahead of the scheduled time. It is understood that this project is a major transport corridor running east-west through Shijiazhuang and a key project in Hebei Province. Once completed, it will form the urban outer ring of Jinzhou City together with the Jinzhou bypass, effectively alleviating traffic pressure on the urban section of National Highway G307 passing through Jinzhou and further expanding the urban development framework, playing an important role in promoting Jinzhou's economic development.

A responsible person from the Highway Construction and Development Center of the Shijiazhuang Municipal Transport Bureau stated that next, the center will continue to coordinate all participating parties, strengthen project management, and, on the premise of ensuring safety and quality, promptly carry out the remaining construction to ensure the project is completed and opened to traffic as soon as possible.