a visible reminder of former IER service. However, both approach trestles to the elevated platform were demolished during abandonment. The trestle that crosses the Southern Pacific mainline however still exists, partially. The northbound portion of the trestle was formerly in use by the Oakland Terminal Railway, a Key System subsidiary meant to handle freight. Sections of the trestle have been cut down, such as large sections of the former double-tracked bridge, which was downgraded to single-track during the sixties and seventies, after switching motions were no longer required on the bridge. The southbound portion of the trestle was converted to a road after abandonment, and does not exist anymore aside from a 280 foot long section. Since 2011, the Oakland Terminal Railway has no longer used the trestle for a variety of reasons, most notably being a 4% grade and weight limits. A lack of customers caused the line to cease using the trestle. Since then there is no track access on either side, leaving it isolated from the national rail network. Aside from the Northbrae Tunnel, 16th Street Station, and trestle, nothing else too visible remains. The Emeryville Greenway between 9th street and Stanford Ave is a section of former IER right of way that serviced the interurban line to Thousand Oaks. Equipment After the SP streetcar line was abandoned in 1926, all 12 cars were sold to the Key System. After IER service ended, the TBA separated its 58 cars from the SP's 89 cars. In 1942, the TBA sold 6 motors for scrap in January and the remaining 52 cars to the Houston Shop Corp., which shipped them via the SP to Houston. One of the TBA trailers was wrecked in transit, so the SP replaced it with one of its trailers. The SP sent the 2 box motors to the PE, in March and April used 5 trailers for buildings in West Oakland, and stored their remaining 81 cars until they were requisitioned in July and September by the United States Maritime Commission for use in transporting workers to World War II shipyards: 20 trailers to a line in the Portland, Oregon, area and 61 cars to the PE in Southern California where some of them were in use until that system ceased operations in 1961. A few of the cars have been preserved: See also The Key System; another transbay commuter rail system that served