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. � . <br /> r .. . . <br /> Current interior investigations of the Cantrell St. Sewer <br /> found it to vary from fair to bad condition, with some instances <br /> of serious structural deficiencies. <br /> The 48" and 54" circular brick sewer extending from Webster <br /> St, to the diversion structure at Jackson Street is considered in <br /> fair condition. Noted deficiencies include: mortar joints in the <br /> sewer invert are heavily eroded; periodic crown and spring line <br /> cracks extend longitudinally along the sewer; root growth is in- <br /> truding through the sewer crown, notably just downstream from <br /> Webster St. ; lime and other deposits extending below the sewer <br /> spring line indicate almost continuous seepage through the brick <br /> shell ; missing crown brick, crown separation and a significant <br /> wall and crown deformation as noted immediately upstream from <br /> Jackson St. for a distance of 60 '± and immediately downstream of <br /> Martin Luther King. , Jr. Drive. Thirty-five lateral connections <br /> extend through the brick sewer shell, in various stages of deter- <br /> ioration varying from good to very poor. Voids aroun�a such con- <br /> nections are prevalent and mortar joint erosion below such connec- <br /> tions is general. Photographs showing several of these connec- <br /> tions are included in the Video Inspection Report and are indica- <br /> tive of the general condition af such laterals. <br /> The existing diversion structure at Jackson St. has required <br /> continuous maintenance effort to keep the 15-inch interceptor <br /> clean and operatinq freely. This diversion, however, is to be <br /> replaced with a new facility as part of the Lincoln Park Combined <br /> 87023A B-11 <br /> 20 of 29 <br />