On September 16, the SFMTA and Department of Public Works will begin infrastructure improvements on the California Street cable car line, the first such upgrade carried out since the major 1982-1984 rehabilitation of the cable car system. In the first phase of the project over the next few months, sewers will be repaired and replaced, and ADA curb ramps will be installed at most intersections along the cable car’s 17-block route between Drumm and Van Ness. Then, beginning in January 2011 and extending into the summer, switches, track, and electrical components of the cable car line will be replaced. Alarm sensors and communication cables will be installed, and the street will be resurfaced. Completing this second phase of the project will require shutting down cable car service and using bus substitution. The project budget includes $19 million for the cable car work, $3.5 million for street resurfacing and improvements, and $1 million for sewer work.