Construction Update for July 16, 2021

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In this issue:

  • Underground pipeline work continuing on Chanate Road
  • Reminder: Westbound upper Chanate Road detour through September

* Scheduling information shown is subject to change due to weather or unforeseen circumstances

Underground pipeline work continuing on Chanate Road
Along Chanate Road between Terra Linda Drive and Humboldt Street, sewer pipeline installation is continuing, at a depth of up to 40 feet below the surface. This part of the project utilizes trenchless technology, which offers less excavation, reduced costs, and shorter, more efficient construction periods.

A lot of this work is taking place underground, but on the street there are work crews, drill rigs, cranes, excavators, trucks, and a lot of other associated equipment (see pictures below). Underground, the work generally consists of drilling a launch pit at one end of a desired section of pipeline, and a reception pit at the other end. These bore pits are 14 feet in diameter to allow equipment access. A large auger drill is used to drill a horizontal underground shaft connecting the launch pit to the reception pit as pipe sections are inserted into the shaft. The bore pits will be developed into manholes upon completion for maintenance access. Click here for a cross section of typical bore pits similar to the work on Chanate Road.

Installation of shoring at upper Chanate Road bore pit

Installation of shoring at upper Chanate Road bore pit

Installation of shoring at upper Chanate Road bore pit – click images to enlarge

Reminder: Westbound upper Chanate Road detour through September
The detour of westbound traffic on Chanate Road between Terra Linda Drive and Humboldt Street will be in effect into September, 2021. This detour, which also applies to bicyclists, is necessary to allow for installation of a large sewer pipeline under Chanate Road. When possible, motorists, bicyclists, and pedestrians should avoid the general area of construction throughout the project period. Click here for a map of the detour.

During the detour, only one-way travel in the eastbound direction of Chanate Road is available. Pedestrian access is maintained on the north side of Chanate Road. Motorists on eastbound Chanate Road are urged to use extra caution. All traffic control signs and measures must be observed. Watch for flaggers and intermittent traffic delays near the construction locations. When using the detour route, please allow plenty of extra travel time.

In coordination with the City’s Fire, Police, and Public Works departments, the project team has prepared contingency plans to facilitate emergency situations that may occur during the detour. If an evacuation is called for, construction on the project will be halted and, if necessary, the travel direction on Chanate Road (eastbound only during the detour) will be reversed to provide westbound-only movement for travel out of the area. Temporary traffic signal lights will be used only in the event of an urgent public safety issue requiring westbound traffic movement or emergency vehicle access on Chanate Road. Please review the City’s Know Your Ways Out web page and neighborhood travel route maps.