Taking down the northern spur of highway 280 is the cover story in the latest issue of the Urbanist, the SF Planning and Urban Research Association's member magazine. SPUR makes the case that if San Francisco is to reap the full benefits of moving Caltrain and high-speed rail underground and re-developing the Caltrain yard at 4th and King Streets, taking down the freeway is a can't-miss opportunity:
Currently, the stub end of Interstate 280 creates a barrier between the developing Mission Bay neighborhood and Potrero Hill. At the same time, the Caltrain railyard — 19 acres stretching from Fourth Street to Seventh Street between King and Townsend — forms a barrier between Mission Bay and SOMA. The obstruction will only get worse if current plans for high-speed rail proceed, forcing 16th Street and Mission Bay Boulevard into depressed trenches beneath the tracks and the elevated freeway.
Check out the rest of SPUR's analysis here.