cotton belt regional rail corridor project - dart.org · cotton belt regional rail corridor project...

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Cotton Belt Regional Rail Corridor Project

Public Meeting

November 2017

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• Today’s discussion focuses on Impacts & Proposed Mitigation

• Large volume of material to cover• Request that questions and comments address Impacts & Proposed Mitigation

• Please make use of comment cards

Meeting Focus

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• Alignment and Station Update• Traffic Analysis and Mitigation• Noise Impacts and Mitigation• Vibration Impacts and Mitigation• Visual Impacts and Mitigation• Other Impacts and Mitigation

– Historic‐age Resources– Recreational Resource

Agenda

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Alignment & StationUpdate

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Alignment & Stations

November 28, 2017 DART Board Meeting• DART Board questioned the number of stations and how closely they were spaced

• DART Board suggested looking at an alternative location for the Coit Station.

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Alignment & Stations

Dallas

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Coit Station Alternative ConceptCoitRoad

Dickerson Street

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Traffic Analysis and Mitigation

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• Draft Traffic Analysis is complete• Draft Traffic Analysis Report has been provided to each city along corridor for review and comment

• Ongoing review of proposed mitigations• Traffic Analysis recommendations subject to DART Board approval

Traffic Analysis Status

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Map of Existing At-Grade Crossings

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Traffic Analysis Guidance

• Institute of Transportation Engineers (ITE) Light Rail Transit Grade Separation Guidelines (January 2003)

• Transportation Research Board Highway Capacity Manual (HCM, 2000)

• SYNCHRO Software Version 9.0• DART Grade Separation Policy

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• 25 crossings advanced to level of service (LOS) and queue impact analysis– 13 crossings identified as ITE category 2 or 3 require

additional analysis– 12 additional crossings identified for analysis based on

proximity of nearby intersections to rail crossing:o East Belt Line, MacArthur, Luna, DNT Frontage

Roads (2), Davenport (2), Hillcrest, Alma, PGBT Frontage Roads (2), K Avenue

Traffic Analysis

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Map of Traffic Analysis Locations

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Summary of Preliminary Findings

• Insert map with location keyRoadway At‐Grade

Crossing Location LOS Impacts?

Queuing Impacts? Recommended Traffic Mitigation

Freeport Parkway 2 No No NoneSouth Belt Line Road 5 Yes Yes Grade SeparationEast Belt Line Road 6 No No NoneMacArthur Boulevard 9 Yes No Signal/Design Improvements

Luna Road 12 Yes Yes Signal/Design Improvements(Grade Separation not feasible)

North Josey Lane 16 No No NoneNorth Marsh Lane 19 Yes Yes Signal/Design ImprovementsMidway Road 21 No Yes Grade Separation

Addison Road 22 Yes Yes Signal/Design Improvements(Grade Separation not feasible)

DNT SB Frontage Road 25 No No NoneDNT NB Frontage Road 26 No No None

Note: All at‐grade roadway crossings will be gated; residential areas will include quiet zones

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Summary of Preliminary Findings

• Insert map with location keyRoadway At‐Grade

Crossing Location LOS Impacts?

Queuing Impacts? Recommended Traffic Mitigation

Davenport Road (South) 28 No No NoneCampbell Road 29 No No NoneDavenport Road 30 No No NoneHillcrest Road 31 No No Signal/Design ImprovementsCoit Road 35 No Yes Grade SeparationWaterview Parkway 36 No No NoneCuster Parkway 37 Yes Yes Grade Separation

Alma Road 38 Yes Yes Signal/Design Improvements(Grade Separation Not Feasible)

PGBT EB Frontage Road 39 No No NonePGBT WB Frontage Road 40 No No NoneK Avenue 41 No No NoneMunicipal Avenue 42 No No NoneJupiter Road 44 No No NonePlano Parkway 46 Yes Yes Grade Separation

Note: All at‐grade roadway crossings will be gated; residential areas will include quiet zones

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Map of Preliminary Traffic Mitigation Locations

Grade Separation

Signal/Design Improvements

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Map of Preliminary Traffic Mitigation Locations

Grade Separation

Signal/Design Improvements

Davenport S

Davenport

Campbell

Hillcrest

CoitMcCallum

Meandering Way

Dickerson

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Noise Impacts and Mitigation

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• Draft Noise Analysis is complete• Ongoing review of proposed mitigations• Noise Analysis recommendations subject to DART Board approval

Noise Analysis Status

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Noise Analysisand Mitigation

Moveable‐point frog

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• Majority of noise impacts associated with train horns at street crossings– 5,419 residential impacts without quiet zones

o 3,090 are considered severe, rest are moderate– 19 institutional impacts without quiet zones

o 10 severe; 9 moderate

• Quiet zones mitigate 96% of noise impacts:– Eliminates all severe and moderate institutional impacts– Eliminates all severe residential impacts– 235 moderate residential impacts remain to be mitigated if

warranted (see handout)

Noise Impact Analysis

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Proposed Noise MitigationQuiet Zones in Residential Areas

Quiet Zone with Gates/Non‐Mountable Barrier

Quiet Zone with Quad Gates

Non‐Mountable Barrier

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Noise Analysis Results (Without Quiet Zones)

Moderate < 3 dB impact

Moderate > 3 dB impact

Severe impact

Noise Legend

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Noise Analysis Results (With Quiet Zones)



Severe impact

Noise Legend

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Proposed New Quiet Zones (36 locations)

Street City Street City Street City

Coppell Rd Coppell Josey Ln Carrollton Dickerson Pkwy Dallas

Southwestern Blvd Coppell Kelly Blvd Carrollton Waterview Pkwy Richardson

Denton Tap Coppell Marsh Ln Carrollton Rufford Dr Richardson

E Belt Line Rd Coppell Addison Rd Addison Alma Dr Richardson

Moore Rd Coppell Quorum Dr Addison W CityLine Dr Richardson

Mockingbird Ln Coppell Spectrum Dr Addison PBGT (EB) Richardson

MacArthur Blvd Coppell Dallas Pkwy (NB/SB) Addison PBGT (WB) Plano

Fairway Dr Coppell Knoll Trail Dallas 10th St Plano

Luna Rd Carrollton Davenport Rd (2) Dallas K Ave Plano

IH 35E Access Rd (NB/SB) Carrollton Campbell Rd Dallas Municipal Ave Plano

Broadway Dr Carrollton Hillcrest Dallas

Denton Dr Carrollton McCallum Blvd Dallas

Perry Rd Carrollton Meandering Way Dallas

Per FRA rules, cities must apply for Quiet Zones. DART will include Quiet Zone mitigation costs as part of the project.

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Examples of Noise MitigationNoise Barriers

Other mitigation examples include:• Directional crossing bells• Sound insulation• Window glazing• Other

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Proposed Noise Wall Cross-Section

One Noise Barrier Wall

Two Noise Barrier Walls

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Noise Impact Location MapsCarrollton (East of Downtown Carrollton)

Crossover mitigation options:‐ Relocate crossover‐ Crossover treatment‐ Noise barrier

NB1

Eastbound trackWestbound trackFreight trackSpecial track work

Track Legend

Moderate < 3 dBModerate > 3 dBModerate Bell < 3 dBModerate Bell > 3 dBModerate Train/Bell > 3 dBProposed Noise BarrierProposed Quiet ZoneProposed Quiet Zone and Crossing Bell Mitigation*

x

*

Noise Legend

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• Insert KMZ map of Carrollton impact areas• Have KMZ file active at meeting

Noise Impact Location MapsCarrollton (West of Marsh Lane)

LakehillTownhomes

NB2


Track Legend


x

*

Noise Legend

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• Insert KMZ map of Carrollton impact areas• Have KMZ file active at meeting

Noise Impact Location MapsCarrollton (At Marsh Lane)

Willow Lane Condominiums

C1


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsAddison (At Spectrum Dr)

Addison Circle Apartments

C2


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (At Knoll Trail Dr)

Aura Prestonwood ApartmentsC3


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (East of Knoll Trail Dr)

Adair II ApartmentsNB3


Track Legend


x

*

Noise Legend

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• Insert KMZ map of Dallas impact areas• Have KMZ file active at meeting

Noise Impact Location MapsDallas (West of Preston Rd)

NB4


Track LegendModerate < 3 dBModerate > 3 dBModerate Bell < 3 dBModerate Bell > 3 dBModerate Train/Bell > 3 dBProposed Noise BarrierProposed Quiet ZoneProposed Quiet Zone and Crossing Bell Mitigation*

x

*

Noise Legend

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Noise Impact Location MapsDallas (East of Preston Rd)

Clear Bay Dr

Blue Mist Ln

Davenport Rd

NB5

Prestonwood Trails Eastbound trackWestbound trackFreight trackSpecial track work

Track Legend


x

*

Noise Legend

Station Platform

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Noise Impact Location MapsDallas (South of Campbell)

NB6

Prestonwood Trails Apartments

NB7


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (At Campbell)

NB9

NB8

C4

x

NB7


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (Campbell to Davenport)

x

NB8

NB9


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (At Davenport)

NB9

NB10

C5Eastbound trackWestbound trackFreight trackSpecial track work

Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (Davenport to Hillcrest)

Highlands of McKamy

NB10

NB11

NB12

NB13

Oakington Ct

Hillcrest R

d


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (Hillcrest/McCallum/Meandering Way)

x

x

NB14

NB15

NB16

NB17

McCallum Blvd

Hillcrest R

d

C7

C8

C6


Track Legend


x

*

Noise Legend

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Noise Impact Location MapsDallas (East of Coit Rd)

University Place

CoitRd

NB18

NB19


Track Legend


x

*

Noise Legend

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Residential Noise Impact SummaryResidential Noise Impact

Without Quiet Zones Quiet Zones without Additional Mitigation

Quiet Zones with Additional Mitigation

City Moderate Severe Moderate Severe Moderate SevereCoppell 303 425 0 0 0 0Carrollton 328 547 31 0 *2 0Addison 414 297 16 0 0 0Dallas 968 1,502 188 0 0 0Richardson 0 0 0 0 0 0Plano 316 319 0 0 0 0Total 2329 3090 235 0 *2 0

* Additional mitigation to be considered

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Noise Analysis Results: Coppell (With Quiet Zones)

1.3 dB Increase

0.5 dB Increase

0.7 dB Increase

No Impact



Severe impact

Noise Legend

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Noise Analysis Results: Richardson (With Quiet Zones)

0.1 dB Increase

1.3 dB Increase0.7 dB

Increase

0.2 dB Increase

No Impact



Severe impact

Noise Legend

0.6 dB Increase

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Noise Analysis Results: Plano (With Quiet Zones)

1.5 dB Increase

0.3 dB Increase

No Impact



Severe impact

Noise Legend

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Vibration Impacts and Mitigation

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• Draft Vibration Analysis is complete• Ongoing review of proposed mitigations• Vibration Analysis recommendations subject to DART Board approval

Vibration Analysis Status

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Vibration Analysisand Mitigation

Example of deep vibration trench

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Track treated withTire Derived Aggregate (TDA)

Proposed Vibration Mitigation

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Vibration Impact Location MapsCarrollton and Dallas

Vibration Impact

Vibration Legend

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Vibration Impact Location MapsCarrollton


Track Legend

Lakehill Townhomes

V1

Vibration ImpactVibration Mat

Vibration Legend

Noise Barrier


Track Legend

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Vibration Impact Location MapsDallas


Track Legend


Vibration Legend

V2

Noise Barrier

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Noise Barrier


Track Legend


Vibration LegendV3

Davenport Rd

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Track Legend


Vibration Legend

Oakington Ct

V4

Hillcrest Road

Noise Barrier

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V5

Noise Barrier


Track Legend


Vibration Legend

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Visual Impacts

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Impacts on the visual and aesthetic character of an area may occur if:• Project results in loss of important existing views• Project conflicts with existing visual elements• Undesirable views of existing urban features are exposed• Project is out of character for significant community activities• Project features do not meet municipal ordinances

Visual Impacts

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Much of the corridor is commercial/industrial and no visual impacts expected. Potential areas for mitigation include:• Adjacent residential areas in Coppell, Carrollton, Dallas, Richardson,

Plano where no buffer exists or to soften noise walls• Cotton Belt structure over BNSF in downtown Carrollton• Addison Wheeler signature bridge• Knoll Trail Station• Preston Road Station• 12th Street Station complex

Potential Visual Impact Areas

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• Landscaping at intervals along residential areas for:– Visual screening– Soften views of sound walls, corridor fencing

• Preservation of existing vegetation/buffers• Station landscaping/appropriate lighting in residential areas• Station materials/finishes to complement surrounding

character (e.g. historic Downtown Carrollton)• Complementary structure design (e.g. Wheeler Bridge)• Public and agency coordination to define types of

vegetation

Visual Mitigation Examples

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Visual Mitigation ExamplesAppropriate Light Distribution

North Lake Station

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Visual Mitigation ConceptsComplementary Design (Wheeler Bridge)

Existing ViewMidway looking south to Arapaho

Cotton Belt Bridge without Arch

Cotton Belt Bridge with Arch

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Other Impacts

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White Rock Creek Bridge ImpactProposed relocation

and reuse of Historic‐age Structure

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Spring Creek Trail RelocationCityLine/Bush Alignment

Spring Creek Trail

CityLine/Bush Station

12th Street StationNew 12th Street

LRT Platform

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Spring Creek Trail Impact

Cotton Belt ROWCityLine AlignmentExisting TrailProposed Trail

PBGT

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Questions and Answers

Request that questions and comments address Impacts & Proposed Mitigation

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• Site Visits of Corridor:– Confirmed: 11/30 & 12/1

• 7:00 a.m. to 5:00 p.m.• Vehicle and walking with DART staff

Corridor Activity

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