Work on bridge for high speed rail project stopped by errors
Construction errors, along with possible design problems, have halted work on a major bridge for California’s high speed rail project in Central California, the Los Angeles Times reports. The bridge in Madera County, north of the town of Madera, will carry traffic over the high speed and adjacent BNSF Railway tracks. Work started in 2016 and was supposed to be finished in 12 months, but has been stopped since last November because steel strands supporting the structure began snapping. No plan has been finalized to repair the bridge, which is being supported by temporary structures to keep it from collapsing.
https://trn.trains.com/news/news-wi...n-on-bridge-for-california-high-speed-project
https://www.latimes.com/california/story/2020-08-10/california-bullet-train-bridge-snafu
A series of errors by contractors and consultants on the California bullet train venture caused support cables to fail on a massive bridge, triggering an order to stop work that further delayed a project already years behind schedule, the Los Angeles Times has learned.
On the Madera County bridge project, the reporting lines are complex.
Tutor Perini is the so-called design builder of the bridge, though its team member Parsons actually designed the bridge.
Tutor’s work is overseen by an independent check engineer, the New York-based firm STV. And Parsons’ work is partly reviewed by an independent site engineer, also STV.
Above STV is a so-called project and construction manager, a joint venture of Bay Area firms PGH Wong Engineering and Harris & Associates, which manages the day-to-day contract.
Under its contract, Tutor was supposed to grout the ducts within 10 days of the strands’ installation in April. Tutor’s design firm, Parsons, wrote a “field change notice” that called for a delay in the grouting until all the strands in all of the ducts were installed, Fernandez said.
It was submitted to STV, where it sat. Fernandez and Christine Inouye, the rail authority’s director of engineering, said in an interview that STV never sent that notice to Wong Harris or to the rail authority.
Construction errors, along with possible design problems, have halted work on a major bridge for California’s high speed rail project in Central California, the Los Angeles Times reports. The bridge in Madera County, north of the town of Madera, will carry traffic over the high speed and adjacent BNSF Railway tracks. Work started in 2016 and was supposed to be finished in 12 months, but has been stopped since last November because steel strands supporting the structure began snapping. No plan has been finalized to repair the bridge, which is being supported by temporary structures to keep it from collapsing.
https://trn.trains.com/news/news-wi...n-on-bridge-for-california-high-speed-project
https://www.latimes.com/california/story/2020-08-10/california-bullet-train-bridge-snafu
A series of errors by contractors and consultants on the California bullet train venture caused support cables to fail on a massive bridge, triggering an order to stop work that further delayed a project already years behind schedule, the Los Angeles Times has learned.
On the Madera County bridge project, the reporting lines are complex.
Tutor Perini is the so-called design builder of the bridge, though its team member Parsons actually designed the bridge.
Tutor’s work is overseen by an independent check engineer, the New York-based firm STV. And Parsons’ work is partly reviewed by an independent site engineer, also STV.
Above STV is a so-called project and construction manager, a joint venture of Bay Area firms PGH Wong Engineering and Harris & Associates, which manages the day-to-day contract.
Under its contract, Tutor was supposed to grout the ducts within 10 days of the strands’ installation in April. Tutor’s design firm, Parsons, wrote a “field change notice” that called for a delay in the grouting until all the strands in all of the ducts were installed, Fernandez said.
It was submitted to STV, where it sat. Fernandez and Christine Inouye, the rail authority’s director of engineering, said in an interview that STV never sent that notice to Wong Harris or to the rail authority.