Colc he ste r / Rive r side / Ba r r e tt/ Mill Inte r se c - PowerPoint PPT Presentation

Colc he ste r / Rive r side / Ba r r e tt/ Mill Inte r se c tion Study PAC Me e ting #3 Se pte mbe r 22, 2016

T onig ht’s Ag e nda • Re vie w Pro je c t Purpo se a nd Ne e d • De sc rib e sho rt te rm a nd lo ng impro ve me nts a nd c ha ng e s sinc e pub lic wo rksho p • Re vie w c o mpa riso n o f a lte rna tive s • Disc uss q ue stio ns a nd ne xt ste ps

Study T a sks a nd T ime line • T a sk 1: Da ta g a the ring ,e xisting c o nditio ns a na lysis; Ja nua ry- F e brua ry • T a sk 2: L o c a l c o nc e rns pub lic wo rksho p; Ma rc h • T a sk 3: Alte rna tive s de ve lo pme nt, PAC me e ting , pub lic wo rksho p; Ma rc h – June • T a sk 4: Alte rna tive e va lua tio n, dra ft sc o ping re po rt, PAC me e ting ; July- Se pte mbe r • T a sk 5: Alte rna tive pre se nta tio n, fina l re po rt; Oc tobe r - De c e mbe r

Proje c t Purpose a nd Ne e d Purpose : T he purpo se o f the Co lc he ste r/ Rive rside Ave pro je c t is to c re a te a sa fe r a nd mo re e ffic ie ntly o pe ra ting inte rse c tio n tha t e nha nc e s the sa fe ty, mo b ility, a nd a c c e ss fo r a ll use rs, while c o ntrib uting to a liva b le a nd vib ra nt c o mmunity. Proje c t Ne e ds: 1. I mpro ve sa fe ty a nd mo b ility fo r a ll use rs – Addre ss pe de stria n sa fe ty – Addre ss sa fe r b ic yc le c o nne c tio n, Wino o ski to Burling to n – Addre ss hig h c ra sh ra te a t inte rse c tio n 2. Simplify the inte rse c tio n – re duc e c o mple xity 3. Re duc e tra ffic c o ng e stio n – ma na g e le ng thy q ue ue s.

Short T e rm Improve me nts Public c omme nts – I mpro ve pe de stria n/ b ike c o nne c tio n to Mill St. – Co nc e rn with so uthb o und le ft turns. – Add la ne to Co lc he ste r Ave nue NB – Dive rt tra ffic fro m Mill Stre e t to Ba rre tt Stre e t – De line a te pa rking b e twe e n Ba rre tt a nd Mill St

Short T e rm Improve me nts Inte rse c tion Pe rforma nc e Future (2035) Future with Short Existing (2015) No Build Term Improvements Peak V/C 1 Delay 2 LOS 3 Hour V/C Delay LOS V/C Delay LOS AM 0.69 21.9 C 0.74 24.4 C 0.83 27.6 C PM 0.98 50.8 D 1.05 64.2 E 1.10 68.9 E

L ong T e rm Alte rna tive s • 4-Wa y I nte rse c tio n • 4-Wa y I nte rse c tio n with Se pa ra te Rig ht L a ne • Ro unda b o ut

4- Wa y Inte rse c tion – Re c o nfig ure s to o ne sig na l – Pe de stria n sig na ls – Co lc he ste r Ave - 2 la ne a ppro a c h w/ b ike la ne s – Bic yc le c o nne c tio ns – 3 la ne b ridg e with sha re d use pa th – Adva nc e d sig ns – Ne w ma rking s – De line a te pa rking – Re lo c a te b us sto p – Pro te c te d c ro ssing pha se

4- Wa y Inte rse c tion w/ Rig ht L a ne – Sa me impro ve me nts a s 4 wa y – Pe de stria n sig na ls a t 4 wa y – Rig ht la ne g e o me try pro mo te s yie ld to pe de stria ns a nd impro ve s tra ffic c a pa c ity.

Rounda bout – K no wn fo r e ffic ie nc y, tra ffic c a lming , sa fe ty, a nd g a te wa y – 2 la ne ro unda b o ut – Pro vide s fo r 3 la ne b ridg e – Ha s 5 to 7% slo pe – Re q uire s re ta ining wa lls – I mpa c ts pro pe rty – Ac c o mmo da te s SB le ft turn o nto Mill St.

Inte rse c tion Pe rforma nc e AM Peak Hour PM Peak Hour Alternative V/C 1 Delay 2 LOS 3 V/C 1 Delay 2 LOS 3 Existing (2015) No Build 0.69 21.9 C 0.98 50.8 D Future (2035) No Build 0.74 24.4 C 1.05 64.2 E Future with Alternative 1 0.83 28.7 C 1.00 70.5 E Improvements Future with Alternative 2 0.75 24.0 C 0.99 70.9 E Improvements Future with Alternative 3 0.36 - 0.67 - 2.5 - 20 A - C 16 - 47 C - E Improvements 0.88 1.09

Sa fe ty Ana lysis a she s = Cra sh Ra te X Vo lume 1. Cr a she s = Cra she s 2. Annua l Cost of Cr X Co st pe r Cra sh e se nt Va lue a ssume s 20- 3. Ne t Pr ye a r life a nd thre e pe rc e nt inte re st

Sa fe ty Compa rison Location/Performance Alternative 1 Alternative 2 Measure (Four-way, (Four-way with Baseline Alternative 3 Signalized Bypass) (Existing Intersection) (Modern Conditions) Roundabout) Combined (three locations) Present Value of $12,717,000 $7,139,000 $5,480,000 $3,373,000 Crashes Savings Relative to - $5,578,000 $7,237,000 $9,344,000 Existing

E va lua tion Ma trix Short Term Alternative 1 Alternative 2 Alternative 3 Improvements 4 -Way 4-Way Roundabout CRITERIA No Build Intersection intersection w/separate lane Project Costs $0 $150,000 to $3,300,000 $3,430,000 $6, 700,000 $825,000 PURPOSE AND NEED Improves Pedestrian Safety No Some Better Better Best Provides Safer Bicycle No No Yes – 3 lane Yes – 3 lane Yes – 3 lane Connectivity Winooski to bridge bridge bridge Burlington Reduces Potential for Crashes No Some Better Better Best Estimated Safety Savings $0 N/A $5,578,000 $7,237,000 $9,344,000 Reduces Intersection No No Yes Yes Yes Complexity Manages Peak Hour No No No No Yes Congestion IMPACTS ROW Impacts None None 1600 sf 1600 sf 4000 sf/ 1 house Historic Resources None None None None Removes 4(f) resource

Short T e rm Improve me nts Public c omme nts – I mpro ve c o nne c tio n to Mill Stre e t. – Co nc e rn with so uthb o und le ft turns. – Add la ne to Co lc he ste r Ave nue NB – Dive rt tra ffic fro m Mill Stre e t to Ba rre tt Stre e t – De line a te pa rking b e twe e n Ba rre tt a nd Mill St – De line a te ro a d la ne s thro ug h the inte rse c tio n

4- Wa y Inte rse c tion – E va lua te c o nc e rns with “Rig ht o nly” o ut o f Mill St. – Pro hib it le fts fro m Mill stre e t in pe a k ho urs? (7-9a / 4-6p) – I mpro ve Mill St. a c c e ss fo r b ike s/ pe de stria ns – Co nc e rne d with le fts o nto Mill St b lo c king thru tra ffic – E va lua te re ta ining 1 la ne o n Co lc he ste r Ave nue NB – Pro vide pro te c te d b ike la ne s to ma tc h the BT V Bike / wa lk – E va lua te re stric ting le ft fro m Co lc he ste r to Rive rside Ave

4- Wa y Inte rse c tion w/ Rig ht L a ne – I nsta ll tra ffic sig na l fo r c ro sswa lk o n rig ht turn la ne – Add a no rth side c ro sswa lk a t Co lc he ste r a nd Ba rre tt – Re mo ve Co lc he ste r Ave pa rking , b e twe e n Ba rre tt a nd Mill fo r wide r side wa lk. – Pro vide a pro te c te d pha se o r a ll sto p fo r pe de stria ns vs a le a ding inte rva l pha se fo r pe de stria ns

Rounda bout – Bike / Pe d a c c e ss to Mill stre e t sho uld b e impro ve d – Pro vide wide r a nd ra ise d c ro sswa lks – E limina te pa rking b e twe e n Mill a nd Ba rre tt Stre e ts fo r b ike / pe de stria ns – Cre a te wide r side wa lk o n Rive rside to Co lc he ste r – Pro vide c urb isla nds – Add side wa lk o n Mill Stre e t – E xpla in the sa fe ty diffe re nc e b e twe e n 1 a nd 2 la ne ro unda b o uts – Co nc e rne d c a nno t ma ke a le ft fro m Ba rre tt to Rive rside

4- Wa y Inte rse c tion Inte rse c tion Pe rforma nc e Future (2035) Future with Existing (2015) No Build Alternative 1 No Build Improvements Peak V/C 1 Delay 2 LOS 3 Hour V/C Delay LOS V/C Delay LOS AM 0.69 21.9 C 0.74 24.4 C 0.83 28.7 C PM 0.98 50.8 D 1.05 64.2 E 1.00 70.5 E

4- Wa y Inte rse c tion with Se pa ra te Rig ht L a ne Inte rse c tion Pe rforma nc e Future (2035) Future with No Build Alternative 2 Existing (2015) Improvements Peak V/C 1 Delay 2 LOS 3 Hour V/C Delay LOS V/C Delay LOS AM 0.69 21.9 C 0.74 24.4 C 0.75 24.0 C PM 0.98 50.8 D 1.05 64.2 E 0.99 70.9 E