Danish worldwide marketing consultant Cowi final week efficiently moved a 290-foot-long metal network-tied arch bridge into place for a fancy grade separation challenge within the metropolis of Corona in southwestern California.
When full by early subsequent 12 months, the scheme will eradicate a critical site visitors choke level within the metropolis by carrying McKinley Road over two mainline rail tracks and the busy Sampson Avenue.
At the moment, passing trains cease site visitors on the degree crossing for a cumulative 2 hours and 35 minutes day by day. The wait had been forecast to develop to greater than 4 hours within the coming decade.
The arched bridge deck was constructed at a spot simply to the north of its ultimate vacation spot, and moved in a single day final weekend with self propelled modular transporters (SPMTs).
In addition to crossing over the tracks, the SPMTs needed to traverse Sampson Avenue and the Arlington Flood Management Channel.
Cowi was answerable for verification of the arch throughout all levels of development and transport.
That included the design of the momentary crossings used within the transfer and momentary trusses to assist the arch on the SPMTs.
Cowi’s North American president Thomas Dahlgren mentioned they used 3D evaluation and bridge info modeling to confirm bridge stability, arch capability and hanger stresses for the differential actions imparted throughout the transfer.
“The accelerated bridge development method utilised for this challenge restricted impacts to the touring public and rail operations, permitting the bridge to be erected over prepare and vehicular site visitors in a single weekend closure,” he mentioned.
The challenge began in early 2022 with an anticipated completion date in late 2024 or early 2025.
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