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Cypress Freeway

Started by jander, October 18, 2015, 12:23:29 PM

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jander

In preparing its Draft EIS for the Cypress Freeway Replacement Project, Caltrans identified and evaluated many different alternatives for responding to the loss of capacity caused by the collapse of the Cypress structure. In developing and screening the alternatives, Caltrans consulted with a range of groups, including jurisdictional agencies, the business community, environmental groups, West Oakland residents, CERT, and major local employers such as the Port of Oakland, the U.S. Army, the Southern Pacific Railroad, and the East Bay Municipal Utility District.


The following six alternatives were presented in the Draft EIS:

No-Build Alternative. Under this alternative, no action would be taken. Modifications and operational improvements already made to I-980 and I-580 to accommodate traffic diverted from the Cypress would remain in effect.
Cypress Corridor Alternative. This alternative would construct the freeway using the existing Cypress right-of-way, utilizing a cut-and-cover tunnel configuration through residential portions of the alignment.
Transit/Transportation System Management (TSM)/Freeway Alternative in the Cypress Corridor. This alternative would combine a version of Option 2 with transit improvements and other strategies to reduce congestion.
Railroad Corridor Alternative Partially at Grade. Under this alternative, the freeway would be built west of the existing Cypress structure, utilizing Southern Pacific railroad yards near the Port of Oakland.
Railroad Corridor Alternative Elevated Alignment Option. This alternative would be an entirely elevated version of Option 4.
Transit/TSM/Freeway Alternative in the Railroad Corridor. This alternative would combine Options 4 or 5 with transit improvements and other strategies to reduce congestion.

It would have been interesting if we had done a cut and cover tunnel.  I wonder if I can find more information on this somewhere.

http://www.fhwa.dot.gov/environment/environmental_justice/case_studies/case5.cfm



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