Construction in the alley, adjacent to the future Cora Apartments at 19 W Harrison, is progressing well and on schedule. The building, which was formerly home of the Kaspars Catering Company, has been completely demolished and debris removed.
Crews have been working in the alley to underground the SCL and communication providers’ overhead lines since January 11, 2016. Before the overhead lines can be completely removed, the trenching infrastructure needs to be built for the conduit. The vaults for future service are installed and trenches are completed for the full length of the alley for Seattle City Light and are expected to be completed for the existing and future communication providers by March 11, 2016.
After the alley trenching is completed, the open trenches will be temporarily patched with asphalt until the final connections are made and the underground lines are live. After the final connection, the alley will be repaved in-kind.
Beginning March 14, 2016, the undergrounding work will splinter. Overhead service on the south side of Harrison Street will be temporarily relocated to poles that have been set on the north side of the street. In addition to the work on Harrison Street, trenching for the communication providers and Seattle City Light will continue across the street into the alley north of Harrison Street. The final terminus for the undergrounding is the northernmost power pole in the alley.
Relocation of the overhead power lines to the north side of Harrison Street is scheduled to be complete on April 7, 2016 thereby freeing us up to begin shoring and excavation for the Cora Apartments at 19 W Harrison Street. The permanent patching and undergrounding north of Harrison Street is expected to be completed soon thereafter.