A small cave-in occurred around 1 p.m. today as during construction work on East Blithedale, according to Severin Ott, resident engineer at Bellecci and Associates.
The shoring used to support a trench where workers were placing a sewer line collapsed, Ott said. It caused a cave-in a few feet deep just west of Locust. No one was seriously hurt, but a worker who was in the trench at the time was treated for minor injuries, Ott said.
Our reader Leslie Cornelius posted a photo and information about the cave-in on Facebook.
The collapse caused traffic back-ups, but was stabilized by about 3:30 p.m., Ott said. It's not expected to cause any setbacks for the overall project.
The first phase of the project involves replacing the sewer lines, manholes and other features of the sewer, and should take about six weeks and cost an estimated $700,000. The second phase, which will take about three weeks, involves a two-part surface treatment to the road for about $50,000. In the first step workers will fill in the potholes and cracks and then apply a seal. In the second step, they’ll microsurface the street using a high-quality aggregate that’s designed to extend the life of the pavement.
The project itself is meant as a temporary fix prior a major overhaul of East Blithedale scheduled to start in 2018 – once the $20 million Miller Avenue Streetscape Plan is complete.
Find out what's happening in Mill Valleywith free, real-time updates from Patch.
Get more local news delivered straight to your inbox. Sign up for free Patch newsletters and alerts.
We’ve removed the ability to reply as we work to make improvements. Learn more here
