HomeMy WebLinkAboutSUB200800240 Review Comments Private road request 2008-11-26-1 � IRGINIa�.
County of Albemarle
Department of Community Development
Memorandum
From: Amy Pflaum, Current Development Engineering Review
Date: 26 November 2008
Subject: Little Yellow Mountain Subdivision (SUB200800240) private street request
The request for a private street submitted according to Subdivision Ordinance
section 14 -232 has been reviewed. The proposed street is an upgrade to an existing
driveway currently serving the parcel. The private street would be required to meet
the standard for private streets serving three to five lots (14- 412A2). A standard
turnaround is proposed at the point where two driveways exit the street, and the
street may be reduced to the two -lot standard.
The proposed subdivision creates four residential lots. The projected traffic expected
from four lots is 40 vehicle trips per day. The proposed private street is adequate to
carry this traffic volume.
The proposed design of the private street meets the following requirements of the
ordinance for streets serving three to five lots (14- 412A2): minimum K values for
vertical curves (5 and 15), 100 -foot sight distance, 30 -foot minimum easement width
(50 foot is proposed), and horizontal curve minimum 40 -foot radius. The design must
also meet the requirement of 14- 412A2a regarding a 14 -foot minimum travelway width.
A public street to serve this subdivision would need to meet the VDOT standards for a
Rural Local Road serving less than 400 vehicle trips per day. The requirements are as
follows: minimum K values for vertical curves (7 and 17), 125 -foot sight distance, 50-
foot minimum easement width, horizontal curve minimum 108 -foot radius, and an 18-
foot travelway width.
Constructing a public street to meet these requirements would require significantly more
earthwork and more disturbance to the Powell's Creek stream buffer than the
construction of a private street. However, a public street would provide safer access to
this subdivision, therefore better serving the general welfare.
Engineering staff does not recommend approval of this waiver.
\ \Cob- dts01 \cityviewlnk\Docs \2008\ SUB \SUB200800240\E2_prv_ADP_Little Yellow Mtn Waivendr