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Home My WebLink AboutSDP201800087 Review Comments Private road request 2019-11-15COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 Private Street Request Project title: Timberwood Square—FSP—Private Street Authorization Request Project file number: SDP201800087 Plan preparer: Dustin Greene, EIT—Roudabush, Gale & Associates [dgreene(d),roudabush.com ] 172 S. Pantops Drive, Charlottesville, VA 22911 Owner or rep.: Highlife Townhomes Inc., 307 West Rio Road [rhauser(a),stonehaus.netl 250 Pantops Mountain Road, Charlottesville, VA 22901 Plan received date: 22 Mar 2019 Date of comments: 8 Apr 2019 Update 15 Nov 2019 Plan Coordinator: Tori Kanellopoulos Reviewer: John Anderson SDP201800087 — Private Street Authorization (Update) Ref. SDP201800087 Engineering review comment item 26 (11/15/19). Comment 26, Rev. 2, shown, below. (Rev. 2) Addressed. As follow-up: Submit SUB2o180022o, Timberwood Square Road Plan as soon as possible so Albemarle can confirm RP sheet updates, a virtual certainty since plan sheets specific to comment 26 are identical (apart from sheet #) across Site and Road Plans. Road Plan submittal should be a print submittal accompanied by proper Road Plan Application fee. Since six other reviewers indicate No Objection, two print copies are sufficient. Please also send link to .PDF of revised Road Plan, should any reviewer wish to take a last look. Planning, ARB, VDOT, ACFR, ACSA, and GIS indicated No Objection to the Road Plan during last review cycle. Once revised Road Plan is received and reviewed consistent with Site Plan, and items i.a.,b.,c., below, Engineering is positioned to recommend Planning Agent approve Private Street Authorization Request. 14-234.C. -Procedure to authorize private street and related matters. C. The agent and the commission may authorize one or more private streets in a subdivision if it finds that one or more of the circumstances described in sections 14-232 or 14-233 exist and it determines that (items L-5., below): 1. The private street will be adequate to carry the traffic volume which may be reasonably expected to be generated by the subdivision. Turn Lane Warrant Analysis, table, sheet 14, SUB201800220, reports the following estimate trips per day for land use categories dependent upon the proposed private road: • 244 (Residential Condominium Townhouse) a 146 (General Office Building) • 293 (Existing Medical Office Building) 683, total Travelway /proposed Private Road serves three land uses between Timberwood Blvd. and Lois Lane, Sta. 10+00(f), with estimated 683 total trips per day using the travelway over this interval. Using VDOT Pavement Engineering Review Comments Page 2 of 3 Design Guide for Subdivisions and Secondary Streets in Virginia, 2018 and ADT =683, depth required (Dr) and depth provided (Dp): Dp=16.125, Dr = 13.43 (Ref. SDP1995-00048 [Forest Lakes Medical Offices] for design detail, Timberwood Blvd. to Lois Lane, Sta. 10+00: 10" VDOT 21-B crushed stone; 3" VDOT BM-3A asphalt concrete and 1.5" VDOT SM-2A asphalt concrete /image below). From Lois Sta. 10+00 to end Landon Lane, based on proposed pavement section for Lois Lane parking areas: Dp=10.28, Dr =9.85 (sheet 14, Road Plan, SUB201800220). Summary: Design of existing travelway (Timberwood — Lois Lane, Sta. 10+00) and proposed pavement section (Lois Lane, Sta. 10+00 to end Brandon Lane) appears to provide sufficient structural depth and design geometry (ADT < 400 at 110' Radius) to carry the traffic volume which may be reasonably expected to be generated by the subdivision. (Dp > Dr). Follow-up comments /request for plan revision, SUB201800220: a. Revise sheet 5 of Road Plan, SUB 201800220, to show roadway stationing, Lois Lane. b. Revise sheet 14, Road Plan, to show base and surface asphalt, and base stone depths for Lois Lane, Sta. 13+64 - 14+64, consistent with structural stone and asphalt depths shown on all other travelway /roadway /parking sections, this sheet; i.e.: 6" VDOT 21A, 2.5" 25.OA, 1.5" SM-9.5A. c. Revise sheet 14, Road Plan, to show Lois Lane section with structural depths, Sta. 10+00 - 13+64. VDOT Pavement Design Guide qink hltp://www.virainiadot.ore/business/resources/Materials/Pavement_Desig_n Guide for Subdivision_ and Secondary Roads.pdf): The nomograph depicted correlates the soil support value of the subgrade (SSV = Design CBR x RF), the traffic volume (Design AADT), and the minimum required pavement design thickness index (DR) for subdivision streets and secondary road pavement, based on AASHO design equations. The equation on which the nomograph is based is: DR = 3.48Ln (AADT) — 1.48Ln (SSV) - 7.23, where Ln is the natural logarithm. This nomograph assumes the following: SDP 199500048 /Forest Lakes Medical Offices, FSP [ images removed with uadate] 2. The comprehensive plan does not provide for a public street in the approximate location of the proposed private street. Engineering defers to Planning. 3. The fee of the private street will be owned by the owner of each lot abutting the right-of-way thereof or by an association composed of the owners of all lots in the subdivision, subject in either case to an easement for the benefit of all lots served by the street. Engineering defers to Planning, but anticipates Planning will require a recorded Private Street Maintenance Agreement to distribute future maintenance expense for the private street among HOA members of (parent) parcel 046134-00-00-00700 (to be subdivided) and owner of 046134-00-00-007130, across which the private street connects Timberwood Boulevard to the townhouse complex as a condition of site plan approval. 4. Except where required by the commission to serve a specific public purpose, the private street will not serve through traffic nor intersect the state highway system in more than one location. It will not: Existing property ownership /land use prevent proposed private street from intersecting the state highway system in more than one location. Neither Landon Lane nor Lois Lane will connect with parcel to the east, TMP 03200-00-00-03700 (Virginia Electric & Power Company), or to Burgundy Lane, a public road located even farther east in the foreseeable future. To do so requires VEPCO to abandon a large electrical power transmission substation (i-�^^�; image removed with update). 5. If applicable, the private street has been approved in accordance with section 30.3, flood hazard overlay district, of the zoning ordinance and other applicable law. Flood hazard overlay does not exist on either TMP 046134-00-00-00700 or 046134-00-00-007130. Summary /(Update): Provided the comprehensive plan does not call for a public street and provided a road maintenance agreement acceptable to Planning Division is recorded in Albemarle County circuit court prior to subdivision approval, Engineering recommends approval of private road request once road plan (SUB201800220) is revised per items. a.-c., item 1., above and provided road plan is further revised to show raised pedestrian crosswalks as traffic calming measures on Lois Lane as Roudabush Gale (Applicant's representative) verbally committed to do on 3/25/19 during tel. conversation (J. Anderson - D. Greene: follow-up to email sent 3/25/2019 11:59 AM). Engineering Review Comments Page 3 of 3 (Update) SDP201800087 Sheet 5 shows raised pedestrian crosswalks, Lois Lane. Sheet 18 provides typ. detail. Once revised (print) Road Plan is received, it will be reviewed for consistency with reference Site Plan sheets. [Note: Request for a private street in a subdivision containing attached dwelling units may be approved by the Agent. —Ref. 14-233.B.1] Thank you J. Anderson 434.296-5832 -x3069 SDP201800087 Timberwood Square pvt street authoriz request 111519update