HomeMy WebLinkAboutSUB202100115 Correspondence 2022-02-01RKI%K
2100 East Cary Street
Suite 309
Richmond, VA 23223
Phone 804.782.1903
Fax 804.782.2142
www.rkk.com
Date: October 20, 2021
To: John Anderson, PE
From: Brian Revels, PE (RK&K)
Cc: Malachi Mills, PE (RK&K)
RE: Worrell Dr. — Road Plan
SUB-2020-00115, Review #1
MEMORANDUM
VDOT 2019 AADT data
(note that VDOT hasn't published a 2020 report and may not due to COVID-19 highly influencing travel
numbers.)
US 250 - Richmond Road (between Virginia Route 20 and 1-64) = 36,000 VPD
Peter Jefferson Parkway (between US 250 and State Farm Blvd) = 9,100 VPD
South Pantops Drive (between Riverbend Drive and State Farm Blvd) = 360 VPD
No other roads within our study area were listed in the VDOT 2019 AADT publication but we can assume
that existing Worrell Drive functions with less traffic than South Pantops Drive. Given the existing
minimal traffic uses on Worrell Drive, we've assumed a daily traffic volume of 100 VPD. This could be
considered high for Worrell but it was used to be conservative.
ITE Trip Generation (101h Edition) calculations: We looked at using a 20,000 SF general office building -or -
a 20,000 SF medical office building (MOB), per guidance from the client, and determined we could work
with the higher generator of the two. We also considered a 4,000 SF specialty retail store, but that
category is no longer an option so an apparel store was selected.
20,000 SF General Office Building (#710): [not used because MOB is higherl
223 VPD (daily), 111in/112out
45 VPH (AM), 39in/6out
25 VPH (PM), 4in/21out
20,000 SF Medical Office Building (#720): [used this value as it is the higher of the twol
680 VPD (daily), 340in/340out
53 VPH (AM), 41in/12out
70 VPH (PM), 20in/50out
4,000 SF Apparel Store (Specialty Retail Type Store) (#876):
266 VPD (daily), 133in/133out
4 VPH (AM), Sin/lout
16 VPH (PM), 8in/8out
Trip Distribution
For the 20,000 SF MOB, we assumed:
80%to/from Isham / State Farm Boulevard
10% to/from Worrell Drive to points west
10% to/from Worrell Drive to points east
For the 4,000 SF apparel store, we assumed:
80% to/from Worrell Drive / US 250 to east
20% to/from Worrell Drive to west
Populating our Isham Drive and Worrell Drive links with existing assumed traffic of 100 VPD on Worrell,
and the proposed MOB and apparel store trip gen yielded the following:
Isham Drive = 544 VPD new traffic plus whatever is there as existing which is unknown.
Worrell Drive (between Martha Jefferson Drive and Isham Drive extended) = 168 VPD
Worrell Drive (between Isham Drive extended and driveway entrance for proposed apparel store) = 221
VPD
Worrell Drive (between driveway entrance for proposed apparel store and Crossroad = 313 VPD.
None of Worrell Drive with existing and these proposed uses hits 1,000 VPD. The highest link is 313 VPD
which is less than one third of the 1,000 VPD threshold (underdrain is not needed for any of the Worrell
Drive segments).