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Northlake WE P10B-SY 940214TRAFFIC ACCESS AND CIRCULATION STUBY FOR co~'~;u,, T~XAS Prepared For: Tipton En~neering. Inc. Prepared By:. DeShazo, Tang & Associates, Inc. 330 Union Station Dallas, Texas 75202 (214) 7484740 February 14, 1994 DT&A Job #94015 TECHNICAL MEMORANDUM TO: Mr. Pat Atkin_~ Tipton Ens~ueerln~ Inc. FROM: DeShaTo, Tang & Associates, Inc. DATE: February 14, 1994 SUBJECT:. Traffic Access and Circulation Study for Northlakc Woodlands East No. 10 Phase B in Coppell, PURPOSE The purpose of this memorandum is to analyze traffic access and circulation for Northlake Woodlands East No. 10 Phase B, a proposed single-family detached housing development in Coppell, Texas. Thc access iaau~ of ~ *--~-'s a~e l~ted to ~ the. site j~.~rUed UalSc ~ at th~ intem~ction of Mac. Arthur Bouleva~ ami Be. It ~ Roa~ A c4~nimfison will be made between this pro~ 97 lot single-family subdivision and a proposed 280 unit multi-family developm,-~t lmown as Rivercha~ Club Apartment, which was to be located south and adjacent to the development. This development was denied by the City of CoppeH's Planning and Zoning Board in .~anHal'y '[~4. SITE DESCRIPTION The proposed site consls~s of land located in the northwest quadrant of MacArthur Boulevard and Belt Line Road. Vacant land borders to the south with single-family housing bordering to the north and west. Exhibit 1 illustrates the site in relation to the surrounding thoroughfares. The development is planned to consist of 97 single-family detached dwelling units. The development will provide two road connections to MacArthur Boulevard, one of which is the extension of Bethel School Road to Mac. Arthur Boulevard from its present location. The proposed site layout is shown in Exhibit 2. EXISTING CONDmONS Accessib~llty is an important consideration in the study and design of transportation systems serving any development. Access to the proposed site will be provided via the following roadways: · MacArthur Boulevard - is a north/south four-lane divided arterial adjacent to thc site. South of Belt Line Road it becomes a six-lane divided roadway which serves as thc major spine road for Valley Ranch. According to data collected in January 1994, Mac. Arthur Boulevard carries approximately 14,000 vehicles per day north of Belt Line Road. The posted speed limit is 35 mph. The Coppell Thoroughfare Plan calls for MacArthur Boulevard to be expanded to a six- lane divided roadway north of Belt Line Road, but the improvements have not been funded or scheduled. ~0 Union Sta~on Dallas, Te~s 7b'ZOZ-48~ Z14/74S-0'740 ~ ~4/263-.~4~S Belt Line Road - is an east/west arterial located south of the proposed development. East of Mac. Arthur Boulevard, Belt Line Road is a six-lane divided roadway providing access to IH-SS. We,st of MacArthur Boulevard, Belt Line Road is a two-lane undivided road. Moeldngbird Lane - is a north/south street serving as a residential collector road west of the propose development. This roadway connects to Belt Line Road and Sandy Lakes Road. Bethel School Road - is an cast/west street which will also serve as a residential collector road that presently ends east of Mockingbird Lane. The developer proposes extending this road to MacArthur Boulevard. ~0RE CONDrrlONS Projected Tral~c Volumes In order to sn~lyze the impact of the proposed development on the adjacent roadway system, future traffic volumes must be estimated. For this nn:~lysis, a ~l~li~~ ~ ~s ~x't~J This build out year was also selected for the proposed Riverchase Club Apartments development. The proposed Riverchase Club Apartment was to be located south of Phase B Northlake Woodlands East No. 10, adjacent MacArthur Boulevard. Traffic projections for the study area were obtained by applying a growth factor to existing traffic and adding the anticipated traffic for a retail center p[:~nnod for the northeast quadrant of MacArthur Boulevard and Belt Line Road. The growth factor was determined using historic traffic volume data. The calculated growth factor for MacArthur Boulevard from 1994 to 1996 was 1.134 which corresponds to a compounded ,~nuai 81x~s~h rate of ~ par ye~. This growth factor was applied to existing turnln~ movements collected by DT&A in January 1994, at MacArthur Boulevard and Belt Line Road. Exhibits 3 and 4 depict the projected 1996 morning and evening peak hour turnln~ movement volumes without the proposed development but it does include the plnnned retail center. Trip Generation The fifth edition of the Institute of Transportation En~neers (rTE) Trip Generation Manual was use to determine the number of trips generated by the proposed development. The manual provides rates developed by ITE for different land uses. The appropriate trip generation rates for single-family detached dwelling units were projected and are shown in Exhibit 5. The exhibit also shows the trip generation utiliTed for the Riverchase Club Apartments study. Exhibit 5 Trip Generation Values Number Weekday AM Peak Hour PM Peak Hour Use of Trips Trips Trips Units Total In I Out In I Out Northlake Woodl_~nds East No 10 - B 97 1004 20 58 67 38 Single-F~mily Detached Riverchase Club Apartments 280 1852 26 103 108 56 Multi-Fsmily Note: Trip generation uses ITE Code 210 for single-fsmily detached and 1TE Code 221 for Multi-Family 2 The dew is"twojected to 8enerat~ 1,004 trip cads duri~ a tweaty-four hour period. During thc AM peak hour, approximately 20 inbound trips will be generated while 67 inbound trips will be generated during thc PM peak hour. Outbound site trips for the AM and PM peak hours were calculated to be 58 and 38, respectively. Thc total projected trip ends during the AM and PM peak hour are 78 and 105, respectively. Traffic Orientation and Assilpunant Trip orientations of site-generated traffic arc based on distribution percentages used in thc previous study pcrformed for the proposed Riverchase Club Apartment dcvelopmcnt. Thc orientations wcrc based on the adjacent roadway network traffic during the morning and evening peak hours. Using this method, two sets of orientations were developed, one for the morning and one for the evening peak hour. These orientations represent the direction that the ti/ps from the proposed development wish to travel dur/ng the different peak times. The resulting orientations are shown in Exhibit 6. Exhibit 6 Traffic Orientation Direction [to/from) AM Peak Hour PM Peak Hour North 12% 20% South 3/% 45% East 49% 32% West 2% 3% Trip a-~slg~ment consisted of modeling the site with trip ends tai~ing the most direct approach possible to the intended desire line. Exhibits ? and 8 illustrate the site generated traffic assignments and distribution to the surrounding thoroughfare network. In distn'ouling the traffic, it was assumed that Bethel School Road was extended to MacArthur Boulevard. The ~ 'c mf.ilett~.School Road is not expired to increase the amoumt of traffic oa MacArthur Boulevard unt~ of Belt Line Road, Vehicles from the west of the proposed development who currently utili~ng MacArthur Boulevard arc projected to continue, however, their route will not be as drcuitous. These trips will now load onto and off of MacArthur Boulevard at Bethel School Road. No net increase in background traffic is therefore assumed at MacArthur Boulevard and Belt Line Road with development. SITE TRAFFIC ARRl~G AT M~cAI/THUR BOULEVARD / BELT LINE ROAD ~ 9 ~d 10 ~ow ~c ~ ~d PM 1~ proje~ed pe~ ho~ ba~o~d ~c ~ ~c projected site generated ~c volm~ sh~ ~ p~en~. Ba~o~d ~c ~d~ a ~e~o~ly approved ret~ ~nter ~velopment ~ ~e nor&e~t q~&~t of Ma~ Bo~e~d ~d Belt ~e Road. ~ ~ rite ~e~t~ U~ f~ P~ B N~ W~ ~ No. ~ that h pr~ to ~ at ~e Ma~h~ ~d~ ~ R~d ~t~ ~ ~ ~ ~ ~ h ~ ~. ~ ~~ 1~% of ~e ~ ~~ ~ ~ ~ ~ ent~ ~ ~~ ~ ~. For ~e PM ~ ho~, ~ verde ~p en~ to or ~om No~e W~ ~t No. 10 P~ B, 1.9% of ~e to~ ~ated ~c for 1~, ~e proje~ed to enter ~e ~te~on of Ma~ Bo~d ~d Belt ~e Roa& COMPARISON TO OTHER STUDIES IN THE AREA Exhibit 11 compares the total anticipated number of vehicles expected to arrive at MacArthur Boulevard and Belt Line Road from Phase B of Northhke Woodlands East No. 10 and the proposed Riverchase Club Apartment development which was denied by the Plannin~ and Zoning Board of Coppell. Exhibit 11 Traffic Volume Entering the Intersection of Mar. Arthur Boulevard & Belt Line Road During Each Peak Hour Traffic Generator Total AM % of Total Total PM % of Total Volume Traffic Volume Traffic Base + Retail Center 4067 4098 Northlake Woodlands East No. 10 Phase B 66 1.60% 80 1.91% River~'h~se Club Apartments 111 2.66% 125 2.96% Plms~ Bog the Northlaim Womtlm~h Fast No. 10 contribut~ 45 loss ve, hicio trips duri~ both the AM and PM pe~k hours th,e does th~i~x~d Rberehase Club Apartm~. The Northlake Woodlands East development is projected to have 60%-64% of the number of trips during the AM and PM peak hours for the Riverchase Club Apartments. Previous r~or-~_.~nd,..~i mo~ll/iestlons to the existi~ tra/fic operations of Belt Line Road and MacArthur ~ w/Ii ,' _'"mm=.o~ ~ the proposed development. These recommendation provided for du~l left-turns for southbom~ tr~ff~ oa M~'Atthur Boulevard at Bolt Line Road. This cun be accomplished by modifyi~ the stripi~ and ~ for ti~ southbound approach, which would allow the current inside through lane an option to also turn left onto eastbound Belt Line Road. CONCLUSION The No~.Wo~ds E~ No. 10 Pha~ B ~lo~t ~-~'~t~ al~m~t~ly ~i%-~0% le~ tr~¢ ti~ tho prev/m~y proposed R~,,rdmse Club Apartments' A traffic analysis of the denied Riverchase Club Apartments indicated the traffic impact of that development could be accommodated. The projected traffic level- of-service was C and D, respectively for the AM and PM peak periods. It therefore is intuitively obvious that the proposed 97 lot single-family development projected level-of-service is D or better. Traffic level-of-service aasociated with the proposed dtwelopmont of Nortiflake Woodlands East No. 10 Phase B will not adversely affect the intersection of Belt Line Road and M~,Arthur Boulevm. d. Current delays can bo improved by almost 90% by imptcment/eg an altem~ve ~ co-fi_~ratiol~ aliowi~ tho southbound middle lane (currently thc inside throufh-lane) to serve both through and left-turn traffic.. The traffic impact of Phase B of the Northlake Woodlands East development is not projected to adversely affect the intersection of MacArthur Boulevard and Belt Line Road, with the recommended improvements. Appendix I ' ' SANDY LAKE RD I SUGARBERRY REDCEDAR WAY / m TUPELO // RD Exhibit 1 Site Location Exhibit 2 Proposed Site Layout TUPELO - m r-. ~ Z2(o .: ~. . ' "~ sPt~t~. ~ ~ ~ I1~ ~hibl 3 "' ,. ~~~:~~~~ackgr°und Turning Movement Volumes I~ff~zB~ ~ ~ ~ ~ " TUPE LO ~:l~t.GOtt ....... SITE ) ~hibff 4 .- ~~ ~ Background Turnino ~ovement Volum~ I TUPE LO i: ~.Oo~ .. _ LN 1,~'/, ) "- SO RR 37?, - .: i, I Exhibit 7 , , ~-.1~11[ Hear ~ ~ta~~Assignments & Distribution 0 _~ - ~ TUP E LO ~:l~..oOtt LN: SITE "'- SP RR Exhibit 9 . !~ AM.~ ~.-.HOu~. 'Backgr°und Traffic Site ~ V~~ Shown in TUPELO Exhibit 10 " .. ~.191Mt:pM.J).eak l~ur.'Background Traffic t~ ..~ WEb.Projected Site GenerMod Volumo~_Shown in 0 3_~1 "" ~ ~ t'~ ~ Intersection Traffic Movements DeShazo, Tang & Associates, Inc Location: M~cArthur Bird & Bolt Liras Rd Date: ./~nmtry 6 - 7, 1994 City/State: Coppoll, Tcx~s Day of Week: Tflm'sd~y (pm) ,e, Fridty (mm) County D~Ii~s ~ 1~1~ 2. Checker(s): Bisflop/Woolvzrtoa/I. arldas Project-ID#: ~ - A Conditions: '~"~' ~ ': .... " .... i ~'~: .......... ~ '~' ............ '~ !~ :¥" '"~ .............. ~'~'~'~'~: :~ .... ~' :~ ................. ~: ~. i M,~'thm' Bird M~Arthnr Bird Bolt Li~ Rd 06:30 06:45 9 20 22 I T'/ 25 ! 3 27 4 ~ ~l..~o.~ 06:45 07:00 12 23 .24 99 [ 89 6 3 87 36 8 ' 32 3 422 07:00 07:15 11 21 37 125 105 13 3 139 57 15 29 7 562 07:15 07:30 14 29 51 188 ~'?~ 129 13 2 172 44 27 45 10 724 2.030 z]~ ~. ~ ]t~ 1~-~4. 07:30 07:45 34 47 7~ 257 ~'~ 170 9 8 233 44 26 69 7 982 2,690 5 to~l ~. ] 07:45 08:00 39 48 94 238 I~ 181 12 6 262 60 24 43 8 1,015 3,283 08:00 08:!5 20 69 78 158 175 178 6 9 219 51 24 42 !1 865 3,586 08:15 08:30 24 48 56 147 112 1 ! 4 144 43 34 33 9 665 3,527 ~"~--~... ~.~'/o :~:?~-~?:ii?:~::-: .:i~i~:;~;:?/l~:~?':~.:::i~/:i~-:~::/:-..::::':/'~'l.-: :i~.~::.:::'::~i~:.'~::'.':::::.':,::'~i::',i!::~'::. :i~'::'.:.'::'::::'~::il;i:.":i:.'::':.-~:~:::::~:.:~:::::.· :":l:~:~:. 16:00 16:15 41 66 24 22 41 2 4 50 29 40 72 28 419 16:15 16:30 48 77 20 18 42 2 7 53 21 27 55 32 402 16:30 16:45 39 95 27 18 42 5 4 63 21 43 97 52 506 16:45 17:00 61 !15 22 24 64 I0 7 78 33 35 102 67 618 1.945 17:00 17:15 65 137 19 26 54 12 8 58 29 42 107 68 625 2.151 17:15 17:30 87 218 33 28 71 8 9 83 31 68 138 141 915 2.664 17:30 17:45 81 181 32 27 59 3 12 77 29 68 124 127 820 2,978 17:45 18:00 73 210 32 27 59 5 14 74 37 66 120 123 840 3,200 'i;~'i~:'~?:::i::::=-;: -:.'::-i-:-;~i??'.~'~i::?.;.:.'~:~'i'~.:: ~:::.:?.:::i:~?:::.::::.::.:=~':/~;'::i=':~. :':=:::.:."::::-~ ;::::::'~"i:::::;~-.i'~. ~~i:i:/,:;i::.:.:i :.;!:ii:'~::~:.,-!:.,,',:!:::::.~'ii:~'ii:::.::~-;~.~:..~:~'.i ::,::::."~:'~,:~-?:i;::,:;.i:~i!?:::~;~':.::.iii::i!::~-':~!;';:::::~::::: i'~',::':':::~',~?~i:-:::?,-':-'i:,:.'~i~i'::.::~:.!:"}i:~!::.;::'::i.;: · ~'~::?.::.'..::.i:. :.'-:.: :'/::".~;:; .:..'~:~'~:-:.:"'6i:.~'~. 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