abandoned IER/SP routes. This had first occurred due to the 1933 consolidation. In March 1933, the abandoned California St line in Berkeley from about Ada and California Sts, up Monterey Avenue to Colusa Ave, was used for the Key's Sacramento St Line (H line) until abandonment in July 1941. In April 1941, a portion of the abandoned 7th St, Dutton Ave Line in East Oakland, from East 14th St to Havenscourt Boulevard, was used to extend the Key's 12th St Line (A Line) until October 1950, when this line was cut back to 12th and Oak Sts. In August 1941, a portion of the Shattuck Ave line in Berkeley, from about Dwight Way to the south end of the Northbrae Tunnel was used to extend the Key's Shattuck Ave Line (F Line). In December 1942, the F Line was extended through the tunnel to the intersection of Solano Ave and The Alameda. The F Line was abandoned in April 1958. Key System streetcars also used the IER Shattuck Avenue tracks from Parker St to University Ave until abandonment in November 1948. During World War II the Key System used a portion of the 7th St, Dutton Ave Line tracks in Oakland on 7th St, from Broadway to Pine St, for streetcar service to a shipyard and most of the 9th St track of the 9th St Line for the Richmond Shipyard Railway. Freight Service SP freight service continued over parts of the 9th St, Shattuck Ave, 7th St and Lincoln Ave Lines. An excursion train pulled by a steam locomotive was operated over this track in April 1954, by the Bay Area Electric Railroad Association. By 1960, all except the part from the 9th St Line had been abandoned. Infrastructure remnants Although not a lot remains infrastructure wise of the old East Bay Electric, there are some very noticeable remains. The Northbrae Tunnel, which runs between Sutter St and Solano Avenue underneath the Fountain Roundabout, is one of the most physical remains of the SP/IER. The tunnel once was a main artery for the SP interurbans into Thousand Oaks, and was used by Key System well after abandonment of SP electric service. Additionally, the elevated platforms of the IER still exist at Southern Pacific's 16th Street Station in Oakland. Although interurban service ceased to the elevated platforms in 1941, the platforms were never torn down and still remain today as