Joint Water and Sewer Commission work crews closed the intersection of Martin Luther King Jr. Boulevard and G Street twice over the last two weeks to work on a sewer line under the road, and will have to do so again. A section of pipe under the intersection will need to be replaced. JWSC officials said the pipe was laid in the 1920s, and is made of clay. It will be replaced with PVC. Another official said they were in the process of vetting the issue and would repair it in a logical, systematic manner.