Caltrans engineers are scrambling to replace Pfeiffer Canyon Bridge, a 317-ft-long, concrete continuous box-beam bridge on a key coastal highway after mudslides moved one of the support columns more than a foot, causing the span to crack and bow.

It was a risky job, subject to myriad variables, the least of which was the fickle currents of New York City’s tidal East River.

When the Trump administration finally reveals the details and timing of its much-touted infrastructure investment program, the American Society of Civil Engineers has a good idea of what needs to be done.

The architecture and structure of London’s emerging 62-story building at 22 Bishopsgate bear no resemblance to its predecessor, called the Pinnacle, initially intended for the same site but abandoned soon after coming out of the ground.