Here’s the update emailed Wednesday afternoon by Foothill Extension Construction Authority CEO Habib Balian:

There has been significant construction activity on the I-210 bridge the last two days, now that Caltrans approved our permit late last week. Preparations were completed early this week on the equipment and materials needed to drill the 110-foot deep foundations, and drilling began yesterday on the first of the three deep foundations. Over the next week, the 11 foot diameter hole for the first foundation (located on the southern shoulder) will be completed, the reinforcing steel cage will be installed and concrete will be poured and tested. Once drilling is complete on this first foundation, the drill rig and crane will then be moved to the center median of the freeway to start work on the remaining two, 110-foot deep foundations.

The photos below capture the equipment and activity happening at the site just this afternoon: