it's citylab at it again: https://www.citylab.com/transportation/2018/03/la-says-no-to-freeway-expansion/555353/?utm_source=SFFB
Well, there goes that.
Not today, anyway.
Don't underestimate the resolve of the Twin Ports (L.A./Long Beach); if 710 is a no-go for the time being, what will happen is likely to be an acceleration of plans to alleviate I-710 traffic. Much of that relates to rail issues: using trucks as a "bridge" between the ports and the downtown railyards was always supposed to be a temporary situation to be at least mitigated if not resolved by the Alameda rail corridor -- but the railroads (particularly UP) got "fat & lazy" with the current methodology and didn't fully upgrade their yard facility down in Wilmington, near the docks, so that trains could be assembled there rather than downtown for the transcontinental trip east. If implemented, that would remove a substantial number of trucks from I-710, the corridor between port & currently-used yard. BNSF, the other rail carrier serving the port,
does assemble significantly more trains down near the ports than does UP; if further "sorting" or "routing" needs to take place, that is done either in San Bernardino or Barstow, where there are major facilities deployed for just that purpose. But UP's facilities are concentrated just east of L.A.; their other major yard (West Colton) is geared toward traditional "manifest" train assembly and is not particularly amenable to containerized cargo (much of which bypasses that yard in any case, traveling east through Riverside and Colton). But increased "dwell time" (i.e. cargo slowdowns due to congestion) between port and the East L.A. yard may in short order prompt UP to complete the process of rebuilding the old S.P. "Dolores" yard in east Wilmington so that long-distance trains may be assembled there and sent eastward, avoiding the one-or-two-container-at-a-time schlep up I-710. Alternately, there are smaller UP yards with container-loading capabilities in the City of Industry and in Mira Loma (between Ontario & Riverside) that could be pressed into service; the possibility that some of the I-710 traffic could shift to other freeway facilities (I-605, CA 57, or a combination of CA 91 & I-15 --
good luck with that! -- come to mind) that more closely serve these more outlying yards.
While citylab can and does engage in hyperbole, conflation, and emotional "heart-tugs" to bolster their position while largely ignoring commerce as a legitimate concern, they
are correct in the statement that I-710 traverses what could be termed the "poorest of the poorest" segments of greater L.A. And it's a freeway dating from the early '50's that was hardly expected to carry a significant portion of the nation's imported cargo. That combination naturally spells "political dynamite"; I'd guess that the estimate of taking a hundred homes is on the light side; knowing the traversed area, I would have increased that figure by at least 50-60 per cent if not more. If the MPO hadn't dropped the boom on this project, chances are class-action litigation would have at least slowed the process down to a crawl.
The railroads -- the progenitors of the problem -- are simply going to have to bite the bullet and start assembling their trains at the point of origin rather than depend upon short-haul trucks to take up the slack.