North Gate Sound Wall

Crews were scheduled to begin work on the foundation of two walls along southbound I-405 adjacent to North Gate Road Tuesday. Workers will use an auger to drill large holes, install forms and steel cages, and pour concrete into the holes to form 130 cast-in-drilledhole (CIDH) piles. The work will begin on the north end of the wall and will proceed south. The job is expected to take about six weeks. For more information, see 405 Improvement story, page 3.