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 and Discussion Next Steps The Town would like to be prepared with an approved improvement plan to hold continued developments accountable for impacts 2
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 3
Project Schedule We are here Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Project Kickoff Ex. Conditions Analysis Local Concerns Meeting Traffic Modeling M Alternatives Analysis VTrans Tech. Meeting Alternatives Presentation Final Report M M 4
Study Area Primary Study Area: 250$feet from VT$15 and Allen Martin Drive intersection Secondary Study Area in Purple (Saxon Hill Industrial Park) Future Thompson Drive Extension 5
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 6
Crash Review 8 Crash History in SHIP 1 May 2011 May 2016 3 2 7
Crash Review Crash History at Study Intersection May 2011May 2016 Date Damage / Injury Road Surface Condition 01/29/16 Property Damage Only Wet Type of Collision 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 8
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 9
Alternatives
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 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 S4 Intersection warning sign on approach to Allen Martin Drive on VT-15 Identified Issues ("X" indicates the proposed alternative may partially address the issue) 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 X X Uncomfortable environment for pedestrians 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 11
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 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 S4 Intersection warning sign on approach to Allen Martin Drive on VT-15 Identified Issues ("X" indicates the proposed alternative may partially address the issue) 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 X X Uncomfortable environment for pedestrians 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 12
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 13
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 14
S3: Striped Shoulder on VT15 at Island ISSUES ADDRESSED: Congestion at Allen Martin Drive Striping in 2011 (Google Streetview) DISCUSSION: Previously there; why removed? Provide improved sight distance, increased left turn storage RECOMMENDATION: Recommend to replace striping Striping in 2016 Estimated Cost: $1,500 15
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 longterm solution is acceptable Estimated Cost: $15,000 16
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 17
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 other midterm solutions Estimated Cost: $390,000 18
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 19
M5: Widen EBRight 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 20
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 21
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 22
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 23
Intersection Operational Analysis
Operational Analysis: 2016 Scenario Volumes 25
Operational Analysis: 2036 Scenario Volumes 26
Operational Analysis: Existing Geometry DO NOTHING ALTERNATIVE 27
Operational Analysis: Intersection Control AM Peak Hour PM Peak Hour Movement Permitted (No Build) Projected (Build) Permitted (No Build) Projected (Build) 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 AM Peak Hour PM Peak Hour Movement Permitted (No Build) Projected (Build) Permitted (No Build) Projected (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 Traffic is highly directional 28
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 29
Contacts www.rsginc.com COREY MACK, PE PROJECT ENGINEER corey.mack@rsginc.com 802.861.0513 SAI SAREPALLI, PE CCRPC TRANSPORTATION PLANNING ENGINEER ssarepalli@ccrpcvt.org 802.846.4490 x16 VISIT: www.ccrpcvt.org/our3work/transportation/current3 projects/scoping/allen3martin3drive3vt153intersection3scoping3study
2016 Traffic Conditions: Hourly Traffic Volume 800 700 600 VT315 / Allen Martin Drive Adjusted Hourly Traffic Volumes by Direction EB WB NB 500 400 300 200 100 0 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 31
S1: Restrict Engine Braking ISSUES ADDRESSED: Engine brake noise DISCUSSION: Legality, enforceability, and effectiveness questionable Potentially unsafe RECOMMENDATION: Not Recommended 32
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 Proposed Sidewalk 33
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 34
L2: Thompson Drive Extension to VT 117 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 35
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 36