The markings are on the roadway for the crosswalks and bike lanes, as the above photo by Vinny & O shows.
The Department of Design and Construction has been replacing sewers, water mains, catch basins, fire hydrants, sidewalks, etc., etc., along East Houston Street, from the Bowery to the FDR Drive. This work phase started in June 2010. Spring 2017 is the new completion date. Do I hear summer 2017?