SDOT press release:
Last week work began on Phase 1 of the Delridge project between SW Henderson and SW Trenton streets. Work in the first few days included setting up the detour, mobilizing equipment and installing tree protection. This week crews started excavating to install a manhole at the intersection of Delridge and Trenton as well as grinding the asphalt and concrete road surfaces.

Through January crews will be installing the two new 48” storm drainage pipes in the center of the roadway. Work in Phase 1 is expected to continue for a month and a half, weather permitting.

Look for more details at http://www.seattle.gov/transportation/pave_delridge.htm