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HomeMy WebLinkAboutCT 98-20; James Canyon Estates; Tentative Map (CT) (16)City of Carlsbad MEMORANDUM DATE: MAY 2, 2000 TO: JOHN KIM, ENGINEERING (TRAFFIC)/0 FROM: JEREMY RIDDLE, ENGINEERING ^M"\. SUBJECT: JAMES CANYON ESTATES (CT 98-20) ALTERNATIVE STREET DESIGN TO HILLSIDE DRIVE I have attached alternative street designs for Hillside Drive, as submitted by Crosby Mead and Benton (CMB). This alternative design is a proposed solution to avoid removing the street trees along the future right-of-way Hillside Drive. These trees will apparently be within city right-of-way, after the final map records for this development. I am unaware if this is an acceptable avenue to present such solutions, but am coordinating this effort per the request of CMB. Please review the attachment and provide me with suggestions (as they relate to the street tree removal moratorium and traffic related concerns). If any of these alternatives are considered, a public review process will also be required (for council) and a substantial conformance review to the tentative map will be required, prior to implementation/ approval. The Public Improvement Plans and Grading Plans for this development, which have already endured two (2) engineering plan checks, will require revisions if alternative street designs are considered. Please let me know if you wish to discuss this project further. Thanks. Lloyd Hubbs, City Engineer Bob Wojcik, Deputy City Engineer Skip Hammann, Senior Engineer Anne Hysong, Associate Planner file CROSBY MEAD BENTON & ASSOCIATES Engineers • Planners • Surveyors Job No. 440-001 File3 Bob Wojcik Asst. City Engineer City of Carlsbad Subject: JAMES CANYON ESTATES (CT 98-20) - Hillside Drive Alternate Plans Dear Mr. Wojcik The'City Council approved James Canyon Estates (CT 98-201) with the condition that Hillside Drive be widened on the East Side with curb gutter and sidewalk. Plans were proposed for these improvements and submitted to the City Departments for review. Review of the plans are proceeding by normal standards except for Traffic Department who has decided not to review the design plans because of the pending Tree Ordinance. Pursuant to conversation between Lloyd Hubbs and Dennis Glaser, with Hallmark Communities, an alternate Street design for Hillside Drive was proposed to avoid removal of the two existing trees located at the intersection of Hillside Drive and Highland Drive. Attached hereto are three designs for widening Hillside Drive at Highland Drive: 1. Per City Resolution - requires tree removals 2. Alternate Design 1 - Hillside Drive easterly curb transition around trees joining existing pavement on Highland Drive as it does today (no tree removals) 3. Alternate Design 2 - Hillside Drive'T' intersects with Highland Drive (no tree removals) The geometric configurations of the intersection of Highland Drive and Hillside Drive as it exists today, as proposed per council resolution and per Alternate Design 1 is not as safe as the geometric configuration as reflected on Alternate Design 2. C:lUwbwojcikdtycatsbad.doc 5650 El Camino Real, Suite 200 • Carlsbad. California 92008 • 760/438-1210 • Fax 760/438-2765 Bob Wojcik City of Carlsbad ^CROSBY" IV-l JH/.r». M-J BENTON & ASSOCIATES The superior geometric configuration for Alternate Design 2 should be adopted for traffic safety for the following reasons: 1. Forces south bound Highland Drive traffic to slowdown by turning left at its intersection with Hillside Drive. 2. Allows north bound Hillside Drive traffic to easily see northbound Highland Drive traffic to avoid potential conflicts. Please review these alternate designs asap and give direction to Traffic Department so that they can complete their plan review and we can revise the plans accordingly. If you have any questions, please contact the undersigned. Sincerely, George L. Bentoi Chief Executive Officer cc: Jeremy Riddle. C:\L\bobwojcikcitycarlsbad.doc AL TERNA TE DESIGN I ALTERNATE DESIGN II U: \ > /'*°-o9 / T -J L- ./\,00 i \ ^ /" X x"' / 7 v 1-- ^ 1 \ $Q^Qi 4 <: ^& bi uj 24' ,HiZy \/ // // / / / // / / v ^ V*^ ' V./,<r i&>\//// ^ &^/ ' / V .0,* <?^ r y ,7 >/ / /// JV>l/4 / 3 u // 134.10' N \ Io /4, jf \i */ /^ x^-^V /if / // ; ,'tf fI COUNCIL APPROVED DESIGN