It is a fact of life that a construction site will interfere with passing traffic and pedestrians.
However, in a pedestrian-hostile city like San José, one commonly finds the sidewalk adjacent to construction to be closed.
Of course, the City could provide a temporary sidewalk on the outside of the construction area, but this often results in the removal of a traffic lane.
San José's goal, of course, is to keep passing automobile traffic as unaffected as possible, regardless of any inconvenient detours that might be required of pedestrians.
Note the absence of a sidewalk on the palm-lined boulevard opposite the closed sidewalk in this photo on Almaden Boulevard, downtown San José, July, 2002.