the arizona parkway background guidelines boulevards ......telegraph rd (us‐24) at 13 mile rd 15...

1 © 2008, All Rights Reserved

The Arizona ParkwayThe Arizona ParkwayBackground and Design GuidelinesBackground and Design Guidelines

January 2009January 2009


•• Arizona Parkway BackgroundArizona Parkway Background

•• Michigan BoulevardsMichigan Boulevards

•• Analysis and StudiesAnalysis and Studies

•• Design GuidelinesDesign Guidelines

•• Resources & ContactsResources & Contacts

AgendaAgenda


MAGMAGII‐‐10/Hassayampa 10/Hassayampa

Valley Valley Transportation Transportation

Framework StudyFramework Study

4 © 2008, All Rights Reserved4 © 2008, All Rights Reserved.

““The Arizona ParkwayThe Arizona Parkway””•• 40 years of use40 years of use

•• Increased capacity over Increased capacity over conventional arterialsconventional arterials

•• Significant safety and Significant safety and operational benefits operational benefits

•• Increased RIncreased R‐‐OO‐‐W required W required over conventional arterials over conventional arterials

5 © 2008, All Rights ReservedAbraham, Conklin & Dearing

Boulevard, 50Boulevard, 50‐‐ft Median, 200ft Median, 200‐‐ft Rightft Right‐‐ofof‐‐Way, up to 8Way, up to 8‐‐laneslanes

Arterial, 12Arterial, 12‐‐ft Median, 130ft Median, 130‐‐ft Right of Way, up to 6ft Right of Way, up to 6‐‐laneslanes


Indirect Left TurnIndirect Left Turn

Left Turn from Main Road

Left Turn from Side Road


Effect on CapacityEffect on Capacity

• Signal Phasing Reduced to 2‐Phase

• Progression with Other Signals is Easier

• Increases capacity up to 35%


MichiganMichigan’’s Boulevards Boulevard‐‐ArterialsArterials

Model for the Arizona ParkwayModel for the Arizona Parkway


Telegraph Rd at Seven Mile Rd(Heavily Urbanized Area)


Telegraph Rd North of 7Telegraph Rd North of 7‐‐Mile RoadMile Road(Urban residential area with roadside access to individual dwell(Urban residential area with roadside access to individual dwelling units) ing units)


Telegraph Rd at 10‐Mile Rd (Substantial commercial development in each quadrant)


3,0003,000‐‐ft Section of MLT Corridorft Section of MLT Corridor(East of Interstate 96 on 6(East of Interstate 96 on 6‐‐Mile Rd)Mile Rd)


Woodward Ave (MWoodward Ave (M‐‐1)1)Downtown Berkley, MichiganDowntown Berkley, Michigan


Telegraph Rd (USTelegraph Rd (US‐‐24) 24) at 13 Mile Rdat 13 Mile Rd


Big Beaver Rd and Crooks RdBig Beaver Rd and Crooks Rd


Analysis and StudiesAnalysis and Studies

The Arizona ParkwayThe Arizona Parkway


Capacity EstimatesCapacity Estimatesfor 8 Lane Facilitiesfor 8 Lane Facilities

1. Assumes K factor between 0.10 and 0.085 based on total approach volume.

•• MLT Network reduced:MLT Network reduced:

–– Delay by 33 percentDelay by 33 percent

–– Stops by 21 percentStops by 21 percent

–– Travel time by 10 percent over Conventional NetworkTravel time by 10 percent over Conventional Network

Conventional MLTThrough Traffic Capacity (VPHPL) 600 600 –– 675675 975 975 –– 1,0251,025

ADT at Capacity1 (VPD)62,000 62,000 –– 73,00073,000 90,000 90,000 –– 106,000106,000

Increase in Capacity 30 30 –– 35%35%


Results and Conclusions Results and Conclusions AZ Pkwy versus Conventional DesignAZ Pkwy versus Conventional Design

•• 66‐‐Lane Parkway > 8Lane Parkway > 8‐‐Lane Lane Conventional arterialConventional arterial

•• 44‐‐Lane Parkway = 6Lane Parkway = 6‐‐Lane Lane Conventional arterialConventional arterial


Vehicle Conflict PointsVehicle Conflict Points

32 Conflict Points in intersection


Vehicle Conflict PointsVehicle Conflict Points

AZ Parkway intersections have 16 Conflict Points

Traditional intersection have 32 Conflict Points


Design and ConstructionDesign and Construction



MCDOT Design GuidelinesMCDOT Design Guidelines

•• Initiated in January Initiated in January 20082008

•• Included Field Visit in Included Field Visit in March 2008March 2008

•• ReportsReports–– State of the Practice State of the Practice (April 2008)(April 2008)

–– Design Guideline Design Guideline Recommendations Recommendations (August 2008)(August 2008)


Design Guidelines ReportDesign Guidelines Report

•• CrossCross‐‐Sectional ElementsSectional Elements•• Elements of DesignElements of Design•• Access ManagementAccess Management•• Median Opening Median Opening

GeometricsGeometrics•• Multimodal Multimodal

AccommodationsAccommodations•• Traffic ElementsTraffic Elements•• Other ConsiderationsOther Considerations•• PhasingPhasing•• Typical Intersection Typical Intersection

ConfigurationsConfigurations


Cross Sectional ElementsCross Sectional Elements

Criteria Urban RuralMedian Width Initial 74Initial 74‐‐ft for Sixft for Six‐‐laneslanes

Ultimate 50Ultimate 50‐‐ft for Eightft for Eight‐‐laneslanes7878‐‐ft for 4 lanesft for 4 lanes

Lane Width 1212‐‐ft ft (exclusive of gutters and curbs)(exclusive of gutters and curbs)

1111‐‐ft Minimumft Minimum1212‐‐ftft

1111‐‐ft Minimumft Minimum

Shoulder Width Inside: 2Inside: 2‐‐ft ft (inc. gutter)(inc. gutter)

Outside: 6Outside: 6‐‐ft ft (inc. gutter)(inc. gutter)

Inside: 4Inside: 4‐‐ft pavedft paved

Outside: 6Outside: 6‐‐ft pavedft paved

Edge Treatment Curb and gutter per MAG Curb and gutter per MAG Detail 220Detail 220‐‐1, Type A1, Type A

Thickened pavement edgeThickened pavement edge

Right‐of‐Way 200200‐‐ft Minimumft Minimum

MidMid‐‐block and Intersectionsblock and Intersections200200‐‐ft Minimumft Minimum

MidMid‐‐block and Intersectionsblock and Intersections


CrossCross‐‐SectionSection


Elements of DesignElements of Design

Design Speed Level Terrain: 55 mph Urban; 65 mph RuralLevel Terrain: 55 mph Urban; 65 mph Rural

Design Vehicle WBWB‐‐5050

Superelevation Urban Urban –– 4%4%Rural Rural –– 8%8%

Clear Zone Follow AASHTO Follow AASHTO Roadside Design GuideRoadside Design Guide

Sight Distances Follow AASHTO Green Book; accommodate Follow AASHTO Green Book; accommodate uu‐‐turn vehiclesturn vehicles


Access ManagementAccess Management

•• Median Opening and Median Opening and Directional Crossover Directional Crossover SpacingSpacing

•• Driveway SpacingDriveway Spacing

•• Corner ClearancesCorner Clearances


Access Conceptual SchematicAccess Conceptual Schematic


Median Opening GeometricsMedian Opening Geometrics

•• Major IntersectionsMajor Intersections

•• Directional CrossoversDirectional Crossovers


Major IntersectionsMajor Intersections


Directional CrossoversDirectional Crossovers


Directional CrossoversDirectional Crossovers


Multimodal AccommodationsMultimodal Accommodations

•• Pedestrians and Pedestrians and BicyclesBicycles

•• BusesBuses

•• Light Rail TransitLight Rail Transit


Traffic ElementsTraffic Elements

•• SigningSigning

•• SignalsSignals


Typical Signing PlanTypical Signing Plan


Typical Signing PlanTypical Signing Plan


Typical Signal LayoutsTypical Signal Layouts


Other ConsiderationsOther Considerations

•• Facility TransitionsFacility Transitions–– Median TerminationMedian Termination

•• Median GradingMedian Grading

•• DrainageDrainage

•• StructuresStructures


PhasingPhasing

•• FullFull‐‐width Phasingwidth Phasing

•• HalfHalf‐‐width Phasingwidth Phasing

•• StructuresStructures


FullFull‐‐Width Phasing CrossWidth Phasing Cross‐‐SectionSection


FullFull‐‐Width Phasing CrossWidth Phasing Cross‐‐SectionSection


Interim Directional CrossoverInterim Directional Crossover


Typical Intersection ConfigurationsTypical Intersection Configurations

•• CollectorCollector

•• ArterialArterial

•• ParkwayParkway‐‐ParkwayParkway


Collector/ParkwayCollector/Parkway


Arterial/ParkwayArterial/Parkway


Parkway/ParkwayParkway/Parkway


Other Parkway/Parkway IntersectionsOther Parkway/Parkway Intersections

•• ““StackedStacked”” or or ““PlatformPlatform””DiamondDiamond

•• Single Point UrbanSingle Point Urban‐‐InterchangesInterchanges

•• Divergent Directional Divergent Directional InterchangesInterchanges

•• Conventional Diamond Conventional Diamond InterchangesInterchanges


ConclusionsConclusions



ResourcesResources

•• Enhanced Parkway Enhanced Parkway ReportsReports1.1. General AnalysisGeneral Analysis

2.2. Continuous Flow Continuous Flow IntersectionsIntersections

3.3. MLT Intersection AnalysisMLT Intersection Analysis

•• MCDOT Design GuidelinesMCDOT Design Guidelines1.1. State of the PracticeState of the Practice

2.2. Guideline Guideline RecommendationsRecommendations


Contacts in the RegionContacts in the Region•• Tim OliverTim Oliver

Supervisor, Planning Branch ManagerSupervisor, Planning Branch Manager602 506602 506‐‐[email protected]@mail.maricopa.gov

•• Nicolaas SwartNicolaas SwartManager, Traffic Engineering and ITSManager, Traffic Engineering and ITS602 506602 506‐‐[email protected]@mail.maricopa.gov

•• Robert MakiRobert MakiPublic Works Director, City of SurprisePublic Works Director, City of Surprise623 222623 222‐‐[email protected]@surpriseaz.com

•• John AbrahamJohn AbrahamTraffic Engineer, City of SurpriseTraffic Engineer, City of SurpriseFormer Traffic Engineer, City of Troy MIFormer Traffic Engineer, City of Troy MI623 222623 222‐‐[email protected]@surpriseaz.com


For more information:For more information:

Bob Hazlett, P.E.Bob Hazlett, P.E.Senior Engineer for Senior Engineer for

the Maricopa Association of Governmentsthe Maricopa Association of Governments

602 254602 254‐‐63006300

[email protected]@mag.maricopa.gov

www.bqaz.orgwww.bqaz.org

““Always do right. This will gratify some people, and astonish thAlways do right. This will gratify some people, and astonish the rest.e rest.””MARK TWAIN, AMERICAN AUTHORMARK TWAIN, AMERICAN AUTHOR

the arizona parkway background guidelines boulevards ......telegraph rd (us‐24) at 13 mile rd 15...

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