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

• nig 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

• 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

• 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

Existing (2015) Future (2035) No Build Future with Short Term Improvements Peak Hour V/C1 Delay2 LOS3 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

• ng 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

• nto Mill St.

Inte rse c tion Pe rforma nc e

Alternative AM Peak Hour PM Peak Hour V/C1 Delay2 LOS3 V/C1 Delay2 LOS3 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 Improvements 0.83 28.7 C 1.00 70.5 E Future with Alternative 2 Improvements 0.75 24.0 C 0.99 70.9 E Future with Alternative 3 Improvements 0.36 - 0.88 2.5 - 20 A - C 0.67 - 1.09 16 - 47 C - E

Sa fe ty Ana lysis

• 1. Cr

a she s = Cra sh Ra te X Vo lume

• 2. Annua l Cost of Cr

a she s = Cra she s

X Co st pe r Cra sh

• 3. Ne t Pr

e se nt Va lue a ssume s 20-

ye a r life a nd thre e pe rc e nt inte re st

Sa fe ty Compa rison

Location/Performance Measure Baseline (Existing Conditions) Alternative 1 (Four-way, Signalized Intersection) Alternative 2 (Four-way with Bypass) Alternative 3 (Modern Roundabout)

Combined (three locations) Present Value of Crashes $12,717,000 $7,139,000 $5,480,000 $3,373,000 Savings Relative to Existing

• $5,578,000

$7,237,000 $9,344,000

E va lua tion Ma trix

CRITERIA No Build Short Term Improvements Alternative 1 4 -Way Intersection Alternative 2 4-Way intersection w/separate lane Alternative 3 Roundabout Project Costs $0 $150,000 to $825,000 $3,300,000 $3,430,000 $6, 700,000

PURPOSE AND NEED

Improves Pedestrian Safety No Some Better Better Best Provides Safer Bicycle Connectivity Winooski to Burlington No No Yes – 3 lane bridge Yes – 3 lane bridge Yes – 3 lane bridge Reduces Potential for Crashes Estimated Safety Savings No $0 Some N/A Better $5,578,000 Better $7,237,000 Best $9,344,000 Reduces Intersection Complexity No No Yes Yes Yes Manages Peak Hour Congestion No No No No Yes

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

Existing (2015) No Build Future (2035) No Build Future with Alternative 1 Improvements Peak Hour V/C1 Delay2 LOS3 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

Existing (2015) Future (2035) No Build Future with Alternative 2 Improvements Peak Hour V/C1 Delay2 LOS3 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