[SDCBC] SR56-Sorrento Valley Road connector

[Kenneth King]

Hey, Kathy! I thought a lot about this when we were working on the Sorrento
Valley Road project. Walked under the bridge a few times, in fact. 
I prefer the under-the-freeway route, as long as it can be designed to be
open except after major rainfall events (assuming we ever have one of those
again!). If it were closed for a week once every five years, for instance, I
think that would be tolerable, since there are alternatives. It WOULD mean
that CALTRANS or the city (?) would have to clean it  up after the major
rainfall.
 
What would make it bad? A permanently slick path like the one nearby. Or a
caked rutted dirt area like Sorrento Valley Road has experienced.  
 
Ken

-----Original Message-----
From: sdcbc-bounces at bikesandiego.org [mailto:sdcbc-bounces at bikesandiego.org]
On Behalf Of Kathy Keehan
Sent: Wednesday, August 29, 2007 2:02 PM
To: Sdcbc
Subject: [SDCBC] SR56-Sorrento Valley Road connector



Your input needed!

We've been asked to provide comments for a feasibility study for the
connection between the west end of the 56 bike path and Sorrento Valley
Road. As many of you know, there's a giant freeway in the way there, and the
City and Caltrans are looking for ways to get bicyclists across. 

There are a couple of options, basically one over the freeway and one under
it. Which do you like better? 

The bridge would be your typical 12 foot wide bike/ped bridge over the
freeway. It would be about 17 feet above the traffic at a minimum, and would
have 6.5% and 7.7% grades for the approaches (200 to 400 feet long depending
on the design), and 90 degree turns at each end of the bridge.

The undercrossing would go under I-5, with a minimum vertical clearance of 8
foot 3 inches. There will be concerns about water (particularly in wet
years), lighting, and security. The grades down to the undercrossing would
be about 7.5% for a couple hundred feet, then up at about 3% for about 80
feet. It will have a fairly sharp turn on the west side of the freeway to
connect to existing Sorrento Valley Road. 

Bridge - less potential maintenance, open even in wet weather, uphill both
ways, over noisy auto traffic/fumes

Undercrossing - downhill both ways, quieter, more potential maintenance,
potential to be closed in wet weather

Which do you prefer?

Kathy

 

------------------------------------------

Kathy Keehan

Executive Director

San Diego County Bicycle Coalition

P.O. Box 34544

San Diego, CA 92163

858.487.6063

execdir at sdcbc.org

www.sdcbc.org

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.bikesandiego.org/pipermail/sdcbc/attachments/20070829/0fe24368/attachment.html