VT15 / Allen Martin Drive Intersection Scoping Study ALTERNATIVES - - PowerPoint PPT Presentation

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VT15 / Allen Martin Drive Intersection Scoping Study ALTERNATIVES - - PowerPoint PPT Presentation

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VT15 / Allen Martin Drive Intersection Scoping Study ALTERNATIVES PRESENTATION MEETING DECEMBER 19, 2016 Agenda Study Area Project Background Existing Conditions Identified Issues Proposed Alternatives Feedback

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VT15 / Allen Martin Drive Intersection Scoping Study

ALTERNATIVES PRESENTATION MEETING

DECEMBER 19, 2016

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Agenda

  • Study Area
  • Project Background
  • Existing Conditions
  • Identified Issues
  • Proposed Alternatives
  • Feedback and Discussion
  • Next Steps

The Town would like to be prepared with an approved improvement plan to hold continued developments accountable for impacts

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Project Background

The Town of Essex, with assistance from the CCRPC, is conducting this scoping study to evaluate existing conditions at the intersection of Allen Martin Drive and VT315 (Jericho Road). Outcomes for this study:

  • Assessment of existing traffic and safety conditions
  • Consideration of public input over the course of the study
  • Development and evaluation of build alternatives: short, medium and long

term

  • Preliminary cost estimates for future engineering, admin, and construction
  • Preferred alternatives for implementation, if warranted
  • A clear and concise report that documents this process
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Project Schedule

Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Project Kickoff

  • Ex. Conditions Analysis

Local Concerns Meeting Traffic Modeling Alternatives Analysis VTrans Tech. Meeting Alternatives Presentation Final Report

M

We are here

M M

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Study Area

Secondary Study Area in Purple (Saxon Hill Industrial Park) Future Thompson Drive Extension Primary Study Area: 250$feet from VT$15 and Allen Martin Drive intersection

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SHIP BuildOut Potential

Developable Land

  • Lot C: 37 acres remaining –

PERMITTED

  • 30 & 42 Allen Martin Drive:

180,000 SF building and 60,000 SF building 3 PERMITTED

  • Allen Brook Development:

116 acres + 28 acres sand extraction – NOT PERMITTED

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Crash Review

Crash History in SHIP

May 2011May 2016

8

3 2 1

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Crash Review

Crash History at Study Intersection

May 2011May 2016

Date Damage / Injury Road Surface Condition Type of Collision 01/29/16 Property Damage Only Wet

Angle Broadside; NB3L and EB3T

09/22/15 Property Damage Only Dry

Rear End; NB

06/24/15 Injury Dry

Broadside; NB3L, EB3T, and WB3T

02/17/15 Property Damage Only Ice

Rear End; EB

11/11/14 Property Damage Only Dry

Rear End; NB

02/06/14 Property Damage Only Snow

Rear End; WB; 4 cars

06/11/13 Property Damage Only Wet

Rear End; WB

09/23/11 Injury Dry

Rear End; WB

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Local Concerns Meeting – June 8, 2016

IDENTIFIED ISSUES:

  • Rear End Crashes on VT315
  • Congestion on Allen Martin Drive
  • Congestion on VT315
  • Speeding vehicles along VT315
  • Engine braking noise
  • Uncomfortable environment for

pedestrians

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Alternatives

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Alternatives to Address Identified Issues

Rear-end crashes on VT-15 Congestion on Allen Martin Drive Congestion on VT Route 15 Speeding vehicles along VT-15 Engine braking noise from vehicles entering speed zone Uncomfortable environment for pedestrians Short Term S1 Restrict Engine Braking X X S2 Extend 35 mph speed zone X X S3 Striped shoulder on VT-15 adjacent to turn lane island X S4 Intersection warning sign on approach to Allen Martin Drive on VT-15 X Medium Term M1 Extend green space into VT-15 near turn lane island (permanent S3) X M2 Add a WB left turn lane X X M3 Extend sidewalk along VT-15 from Sandhill Rd X X M4 Add / extend separate NB right- and left-turn lanes X M5 Widen eastbound right turn curve radius X M6 Flashing intersection beacon X Long Term L1 Construct Allen Martin Parkway exit from VT-289 X L2 Construct Thompson Drive extension to VT-117 X L3 Intersection Control Modification: Signal X X L4 Intersection Control Modification: Roundabout X X X X L5 Construct connection to Saxon Hill Road X Identified Issues ("X" indicates the proposed alternative may partially address the issue)

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Alternatives to Address Identified Issues

Rear-end crashes on VT-15 Congestion on Allen Martin Drive Congestion on VT Route 15 Speeding vehicles along VT-15 Engine braking noise from vehicles entering speed zone Uncomfortable environment for pedestrians Short Term S1 Restrict Engine Braking X X S2 Extend 35 mph speed zone X X S3 Striped shoulder on VT-15 adjacent to turn lane island X S4 Intersection warning sign on approach to Allen Martin Drive on VT-15 X Medium Term M1 Extend green space into VT-15 near turn lane island (permanent S3) X M2 Add a WB left turn lane X X M3 Extend sidewalk along VT-15 from Sandhill Rd X X M4 Add / extend separate NB right- and left-turn lanes X M5 Widen eastbound right turn curve radius X M6 Flashing intersection beacon X Long Term L1 Construct Allen Martin Parkway exit from VT-289 X L2 Construct Thompson Drive extension to VT-117 X L3 Intersection Control Modification: Signal X X L4 Intersection Control Modification: Roundabout X X X X L5 Construct connection to Saxon Hill Road X Identified Issues ("X" indicates the proposed alternative may partially address the issue)

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Do Nothing Alternative

ISSUES ADDRESSED:

  • None

DISCUSSION:

  • Least expensive
  • Least impactful
  • Does not address congestions,

safety, or other identified issues RECOMMENDATION:

  • Must be considered

Estimated Cost: $0

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S2: Extend Speed Zone

ISSUES ADDRESSED:

  • Engine brake noise
  • Speeding through project area
  • Uncomfortable pedestrian

environment DISCUSSION:

  • May address the issues, reduce

severity of crashes

  • Speed zones should be set by

engineering study of the corridor RECOMMENDATION:

  • Recommend speed study

Estimated Cost: $2,000

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S3: Striped Shoulder on VT15 at Island

ISSUES ADDRESSED:

  • Congestion at Allen Martin Drive

DISCUSSION:

  • Previously there; why removed?
  • Provide improved sight distance,

increased left turn storage RECOMMENDATION:

  • Recommend to replace

striping

Striping in 2011 (Google Streetview) Striping in 2016

Estimated Cost: $1,500

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S4: Enhanced Intersection Warning Sign

ISSUES ADDRESSED:

  • WB rear end crashes

DISCUSSION:

  • With queue detector and solar

power, alert motorists to stopped traffic in roadway

  • Not necessary if mid3 to long3

term solutions are pursued RECOMMENDATION:

  • Recommended only if no mid

to long term solution is acceptable Estimated Cost: $15,000

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M1: Extend Island into Roadway

ISSUES ADDRESSED:

  • Congestion at Allen Martin Drive

DISCUSSION:

  • Long term application of S3
  • Provide improved sight distance,

increased left turn storage RECOMMENDATION:

  • Initially recommended in

conjunction with other mid term solutions Estimated Cost: $17,500

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M2: Construct WB Left Turn Lane

ISSUES ADDRESSED:

  • WB rear end crashes
  • Congestion on VT315

DISCUSSION:

  • Long term application of S3
  • Provide improved sight

distance, increased left turn storage RECOMMENDATION:

  • Initially recommended

in conjunction with

  • ther midterm

solutions Estimated Cost: $390,000

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M4: Extend NB Left & Right Turn Lanes

ISSUES ADDRESSED:

  • Congestion and queuing on

Allen Martin Drive DISCUSSION:

  • Allows right turning vehicles to

bypass queued left turns

  • May not be needed if long3

term alternatives are pursued RECOMMENDATION:

  • Queueing not currently an

issue; pursue if long term solutions are not developed Estimated Cost: $165,000

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M5: Widen EB Right Turn Radius

ISSUES ADDRESSED:

  • Congestion on VT315

DISCUSSION:

  • Turning trucks track into VT3

15 through OR Allen Martin Drive

  • Will increase pavement

width; may increase speed RECOMMENDATION:

  • Redesign / improvements

at intersection must account for design vehicle movements Estimated Cost: $17,350

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M6: Flashing Intersection Beacon

ISSUES ADDRESSED:

  • Rear End Crashes on VT315

DISCUSSION:

  • Could be placed on span

wire with poles designed for ultimate signal (if preferred) RECOMMENDATION:

  • Initially recommended in

conjunction with other midterm solutions Estimated Cost: $50,000

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L3: Intersection Control: Signal

ISSUES ADDRESSED:

  • Congestion on Allen Martin

Drive DISCUSSION:

  • Intersection control

warranted with 80 acres additional development

  • Could be phased with mid3

term improvements

  • Acceptable operations
  • Light / noise into neighbors

RECOMMENDATION:

  • Viable intersection control

Estimated Cost: $1.5 million

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L4: Intersection Control: Roundabout

ISSUES ADDRESSED:

  • Congestion on Allen Martin Drive

DISCUSSION:

  • Intersection control warranted

with 80 acres additional development

  • Turn lane widening unnecessary
  • Generally considered safer
  • Large impacts to fewer

properties RECOMMENDATION:

  • Viable intersection control

Estimated Cost: $2.0 million

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Intersection Operational Analysis

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Operational Analysis: 2016 Scenario Volumes

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Operational Analysis: 2036 Scenario Volumes

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Operational Analysis: Existing Geometry

“DO NOTHING” ALTERNATIVE

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Operational Analysis: Intersection Control

  • Traffic is highly

directional

LOS Delay LOS Delay LOS Delay LOS Delay NB Left A 9.5 B 10.9 A 9.4 A 8.9 NB Right B 10.8 B 12.7 B 12.8 C 24.5 WB Left A 5.9 B 18.0 B 12.0 C 21.3 WB Thru A 4.2 A 4.1 A 5.6 A 8.3 EB Thru A 3.3 A 3.3 A 9.1 B 16.5 EB Right A 3.2 A 3.5 A 4.8 A 7.3 Overall A 5.1 B 10.0 A 9.3 B 16.6 Projected (Build) AM Peak Hour PM Peak Hour Movement Permitted (No Build) Projected (Build) Permitted (No Build) LOS Delay LOS Delay LOS Delay LOS Delay EB A 8 B 15 A 9 B 11 WB B 11 D 26 A 6 A 8 NB A 4 A 4 A 9 C 16 Overall A 9 C 21 A 9 B 12 Projected (Build) Movement AM Peak Hour PM Peak Hour Permitted (No Build) Projected (Build) Permitted (No Build)

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Two Alternative Paths

  • “Do Nothing” is always

an option

  • Can pursue all medium

term options and decide signal control mechanism at a later date

  • Medium term options are

in direction of signal

  • Fewer medium term

alternatives would be used in roundabout

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Contacts

www.rsginc.com

Contacts

www.rsginc.com

COREY MACK, PE

PROJECT ENGINEER

corey.mack@rsginc.com 802.861.0513

VISIT: www.ccrpcvt.org/our3work/transportation/current3 projects/scoping/allen3martin3drive3vt153intersection3scoping3study

SAI SAREPALLI, PE

CCRPC TRANSPORTATION PLANNING ENGINEER

ssarepalli@ccrpcvt.org 802.846.4490 x16

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2016 Traffic Conditions: Hourly Traffic Volume

100 200 300 400 500 600 700 800 6:00 AM 6:30 AM 7:00 AM 7:30 AM 8:00 AM 8:30 AM 9:00 AM 9:30 AM 10:00 AM 10:30 AM 11:00 AM 11:30 AM 12:00 PM 12:30 PM 1:00 PM 1:30 PM 2:00 PM 2:30 PM 3:00 PM 3:30 PM 4:00 PM 4:30 PM 5:00 PM

Vehicles / Hour (Adjusted) Starting Time

VT315 / Allen Martin Drive Adjusted Hourly Traffic Volumes by Direction

EB WB NB

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S1: Restrict Engine Braking

ISSUES ADDRESSED:

  • Engine brake noise

DISCUSSION:

  • Legality, enforceability, and

effectiveness questionable

  • Potentially unsafe

RECOMMENDATION:

  • Not Recommended
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M3: Extend Sidewalk Along VT15

ISSUES ADDRESSED:

  • Excessive Speed
  • Pedestrian

Environment DISCUSSION:

  • Streetscape

enhancement may impact perception of road

  • High3priority segment

RECOMMENDATION:

  • Conduct scoping

study for sidewalk and gateway treatment

Existing Sidewalk Existing Sidewalk Proposed Sidewalk Proposed Sidewalk Existing Sidewalk Proposed Sidewalk

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L1: Allen Martin Parkway / VT289 Intersection

ISSUES ADDRESSED:

  • Congestion on Allen Martin

Drive DISCUSSION:

  • Most SHIP traffic would use

this intersection

  • Increase WB left turns from

VT315

  • Not regionally feasible

RECOMMENDATION:

  • Not recommended
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L2: Thompson Drive Extension to VT117

ISSUES ADDRESSED:

  • Congestion on Allen Martin

Drive DISCUSSION:

  • Would not remove traffic

from study intersection

  • Not economically feasible

for developer RECOMMENDATION:

  • Not recommended
  • Town may wish to retain

ROW for future road development

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L5: Saxon Hill Road Connection

ISSUES ADDRESSED:

  • Congestion on Allen Martin

Drive DISCUSSION:

  • Unlikely to remove traffic

from study intersection

  • Require significant

investment

  • Create potential traffic

impacts through bike network RECOMMENDATION:

  • Not recommended