reston network analysis: community meeting tier 1 & tier 2

County of Fairfax, Virginia

Reston Network AnalysisCommunity Meeting Tier 1 & Tier 2

May 18, 2016

Kristin CalkinsFairfax County Department of Transportation


Agenda• Purpose of the Study• Network Analysis Process• Tier 1 & Tier 2 Results• Funding Update• Next Steps• Question & Answer

Department of Transportation 2


Purpose of Study• Conduct a detailed analysis of the grid of streets and

determine– A finalized grid of streets– Number of lanes between and at intersections– How to best accommodate transit, bikes, and pedestrians– Right-of-way needs

• Assign urban street types and modal emphasis based on the Urban Street Standards from the Department of Rail and Public Transportation




Study Area


How we got here:Reston Phase I Plan Amendment



Need for Study


• The Reston Phase I Comprehensive Plan Amendment was adopted by the Fairfax County Board of Supervisors on February 11, 2014.

• The Board follow-on motion from the adoption directed staff to: – “conduct a detailed evaluation and operational analysis of the enhanced

street network shown on the Reston Master Plan, prioritize these improvements, and develop an implementation strategy.”

– “conduct an inclusive process to prepare a funding plan for the transportation improvements recommended in the Reston Master Plan and report with its recommendations. The funding plan should include arrangements for financing the public share of Reston infrastructure improvements and facilitate co-operative funding agreements with the private sector. The PC strongly believes that public and private investment in Reston is both critical and responsible for ensuring Reston’s future success”


Need for Study (Cont.)Follow-on Study to the Reston Phase I Plan Amendment



Reston Phase I Plan AmendmentTransportation Recommendations


• Maintain a Balance between land use and transportation• Ensure pedestrian mobility throughout the TSAs• Bike Master Plan for County has been adopted and

includes the TSAs• An enhanced RIBS and Fairfax Connector service to

support rail• Strong Transportation Demand Management (TDM)

program in the TSAs


Reston Phase I Plan AmendmentMajor Road Transportation Recommendations


• An enhanced street network to increase connectivity– Developed by the Reston Task

Force• Soapstone Drive Overpass• Town Center Parkway

Underpass • South Lakes Drive Overpass• Grade Separate Fairfax

County Parkway/Sunrise Valley Drive


Why a GridA grid of streets allows for more options when going from

point A to point B, reducing the demand on streets




Reston Phase I Plan AmendmentGrid of Streets


Reston Network Analysis


Data Collection• Traffic

Counts in June 2015

• Travel Time Runs

Existing Conditions• Capacity

Analysis • Level of

Service

Test Grid of Streets (2030 & 2050)• Traffic

Forecasting Capacity Analysis

• Level of Service

Mitigation• Signal re-

timing• New links• Turn lanes• Additional

lanes

Roadway Classification• DRPT Design

Guidelines• Bike lanes• Sidewalks/

Pedestrian routes

• On-Street Parking

• Transit Routes

Finalize Grid of Streets (2030 & 2050) Based on:• Advisory

Group input• Stakeholder

input• Community

input

Phasing Analysis• Prioritizatio

n of larger projects

Network Analysis Project Process

Advisory Group input, Stakeholder input, Community input


Transit Oriented Development• Mixed-use walkable

development around Metrorail Stations

• Supported by strong Transportation Demand Management (TDM) program• Enhanced pedestrian facilities• Increased transit ridership• More bike parking and access• Encourages carpooling• Teleworking


Development2050 Peak Hour – Future Trips0 to ¼ Mile

¼ to ½ Mile

Beyond ½ Mile

Office 45% 40% 35%

Residential 45% 40% 25%Technological Advancement

7.5% 7.5% 7.5%

TDM Vehicle Trip Reduction Goals

Reductions based off of ITE Trip Generation Rates


Evaluating the Grid• Level of Service and Delay at Intersections

• LOS E (55 – 80 seconds of delay) is the standard for the Reston Transit Station Areas

• VDOT and FCDOT have agreed on LOS E as the standard for the Reston Transit Station Areas

• Queue Length (number of cars waiting at a signal)• Walksheds – pedestrian accessibility• Enhanced connectivity for transit



Mitigation



Purpose of Mitigation• Mitigation reduces vehicle congestion • Mitigation reduces delays experienced at

intersections• Mitigation improves the reliability of travel times

through an area (for both buses and vehicles)• Mitigation will be the way we achieve LOS E in the

Transit Station Areas• We are using mitigation measures that have the

lowest impact



Mitigation Options• Mitigation Measures - Tiered Approach

– 1st Tier: No right of way (ROW) impact – 2nd Tier: Some right of way impact– 3rd Tier: Large scale mitigations if needed

– Consultation with Advisory Group, Stakeholders, and citizens

• Each grid link is initially assumed to be one lane in each direction

– No turn lanes were initially assumed at new intersections


Additional coordination will be needed with VDOT on the location of turn lanes at signalized intersections


2050 1st Tier Recommendations



2050 1st Tier Mitigation Measures

• No ROW Impact Mitigation Measures – Modifications to lane configurations– Signal timing and phasing optimization – All-way stop vs. two-way stop evaluation – Additional traffic signals



2050 1st Tier Signal Recommendations


26 New Signalized Intersection LocationsSunrise Valley Dr. @ Wood Oak Dr. Sunrise Valley Dr. @ Commerce Park Dr. East

Sunrise Valley Dr. @ Colts Brook Dr. Soapstone Overpass @ Indian Ridge Rd. Extension

Frying Pan Rd. @ Greg Roy Ln. Sunset Hills Rd. @ West of Town Center Pkwy.

Monroe St. @ Future Connection to Herndon Metro Town Center Pkwy. @ North of Sunset Hills

Glade Dr. @ Pinecrest Rd. Town Center Pkwy. @ Market St.

South Lakes Dr. @ Pinecrest Rd. Sunset Hills Rd. @ Library St.

Sunrise Valley Dr. @ Pinecrest Rd. Extended Sunset Hills Rd. @ Soapstone Overpass

Sunrise Valley Dr. @ Town Center Pkwy. Sunset Hills Rd. @ East of Soapstone Overpass

Town Center Pkwy. @ North of Sunrise Valley Dr. Sunset Hills Rd. @ South Lakes Overpass

West of Reston Pkwy. with grid street Reston Station Blvd. @ Metro Center Dr.

Sunrise Valley Dr. @ Roland Clarke Place Reston Station Blvd. @ Michael Faraday Dr.

Sunrise Valley Dr. @ Indian Ridge Rd. Isaac Newton Square S. @ Isaac Newton Square W.

Sunrise Valley Dr. @ Commerce Park Dr. West Wiehle Ave. @ Isaac Newton Square N.


• Unmitigated had 20 Problem Locations• 10 intersections with delay over 120 Seconds:

1. Centreville Road & Sunrise Valley Drive 2. Monroe Street & Fox Mill Road 3. Spring Street & Herndon Parkway 4. Fairfax County Parkway & Baron Cameron Avenue 5. Fairfax County Parkway & Sunrise Valley Drive6. Town Center Parkway & Sunset Hills Road7. Reston Parkway & Baron Cameron Avenue8. Reston Parkway & Bowman Towne Drive9. Reston Parkway & Sunrise Valley Drive 10.Reston Parkway & South Lakes Drive

Problem Locations After Tier 1 Mitigation



2050 2nd Tier Recommendations




Mitigation Measures2nd Tier: Some Right of Way Impact

• Potential some ROW Mitigation Measures– Signals were added where needed– Turn lanes: left and right turn lanes– Additional through lane– Additional grid link




New Signals • New Dominion Pkwy. & Library St.• Reston Station Blvd. & Soapstone Dr.• Bracknell Dr. & Stevenage Rd.• Reston Town Center West consolidated access


2050 2nd Tier Intersection Control





Turn Lanes• Monroe St. & Frying Pan Rd./Fox Mill Rd. • Reston Pkwy. & Sunrise Valley Dr. • Sunset Hills Rd. &Town Center Pkwy. • Wiehle Ave. & Reston Station Blvd.• Wiehle Ave. & N Isaac Newton Sq.• Monroe St. & future connection to Herndon

Metro GarageAdditional coordination will be needed with VDOT on the

location of turn lanes at signalized intersections


2050 2nd Tier RecommendationsNew Turn Lanes


Wiehle Ave. & N. Isaac Newton Sq.- EB left turn lane & WB right turn lane

Tier 1 Tier 2

Wie

hle

Ave

.

N. Isaac Newton Sq.

Wie

hle

Ave

.

N. Isaac Newton Sq.

PM: 103 sec. PM: 65 sec.


2050 2nd Tier RecommendationsTown of Herndon Comprehensive Plan Improvements


Worldgate Dr. & Herndon Pkwy.

Monroe St. & Worldgate Dr.

Monroe St. & Herndon Pkwy.

Fairbrook Drive Extension Worldgate Drive Extension

New SignalsWorldgate Dr. Extension & Herndon Pkwy.

Herndon Pkwy. & Fairbrook Dr.


2050 2nd Tier MitigationResults



2050 Problem Locations


Intersections – 120+ Seconds of Delay

Intersections2050 Unmitigated After 2050

1st TierAfter 2050

2nd Tier20 10 7

With signal re-timings and the introduction of signals, there has been a reduction in the

projected number of intersections experiencing delays in excess of 120 seconds



2050 Unmitigated Problem Locations



2050 1st Tier Problem Locations



2050 2nd Tier Problem Locations




• Unmitigated had 20 Problem Locations• After 1st Tier: 10 Problem Locations• After 2nd Tier: 7 Problem Locations

– 6 are associated with identified follow-on tasks1. Fairfax County Parkway & Spring Street 2. Fairfax County Parkway & Sunrise Valley Drive3. Reston Parkway & Baron Cameron Avenue4. Reston Parkway & Bowman Towne Drive5. Reston Parkway & Sunrise Valley Drive 6. Reston Parkway & South Lakes Drive




Fairfax County Pkwy. & Spring St.

Reston Pkwy. Capacity Improvements

Fairfax County Pkwy. & Sunrise Valley Dr.


3rd Tier Mitigation



Mitigation Measures3rd Tier: Alternative Intersection Treatment

• Median U-Turn/Superstreet– Eliminates left turn movement for side streets– Increases thru movement green time– Additional needed ROW to provide turn radius



Mitigation Measures3rd Tier: Large Mitigation Measures

• Underpass/Overpass– Provides for an uninterrupted thru movement

• Only done in close coordination with Advisory Group and Stakeholders after all other mitigation measures have not worked



Funding Plan



Funding Plan Overview• The plan focuses on how to best fund projects in the

Reston Transit Station Areas • Projects included in the plan are those recommended in

the Reston Phase I Plan Amendment • The plan will span 40 years (FY2015 - FY2054)• The plan will build on priorities identified as part of the

Network Analysis • The plan will determine funding allocation for projects



Reston Funding Plan Projects



Shared Funding Solution• Public and private investment in Reston is necessary to ensure

Reston’s future success. • Public funding means money from federal, state, local, and

regional sources.– Multiple sources from each type

• Private funding means money from the following sources:– Proffers from developers– Contributions to a Road Fund (per square foot/per dwelling unit)– In-kind Contributions– New Revenue Source (tax district, service district, etc.)



Building the Funding Plan• Discussion with Advisory Group• Prepared preliminary cost estimates for roadway,

intersection, and grid improvements• Potential revenue sources and funding mechanisms for

the plan• Individual project prioritization (Network Analysis Study)• Timing of funding needs



Building the Funding Plan Cont.• Viable funding strategies

– Amount of public and private responsibility for plan costs– Analysis of several funding scenarios that include use of a road

fund or a road fund in combination with a service or tax district over Reston TSAs, Reston, and/or Special Tax District 5

– Non-viable scenarios have been removed based on initial feedback include those that feature a service district over all of Reston or a service district over Special Tax District 5, which provide limited increases to support funding the plan



Next Steps• Identify Tier 3 Mitigation Measures for:

– Fairfax County Parkway & Sunrise Valley Drive– Fairfax County Parkway & Spring Street– Reston Parkway

» Intersection improvements from Baron Cameron Avenue to Lawyers Road

• Phasing Analysis– Based on Existing Conditions

• Advisory Group Meeting on Funding Plan



Schedule


Task Description

1A Land Use and Networks - Task is Complete

1B Traffic Counts - Task is Complete

2A Establish Existing Conditions - Task is Complete

2B Calibrate Against Existing Conditions -Task is Complete

3A2 Analyze Future Conditions (2050) - Task complete advance to Tier 3 Mitigation

3A1 Analyze Future Conditions (2030)

3B Simulation of the Dulles Toll Road

3C Microsimulation - Optional

4A Meetings/Presentations

4B Additional Meetings/Presentations - Optional

5A Phasing Analysis - Existing Conditions

5B Phasing Analysis - 2050 - Optional

6 Determination of DRPT Guidelines Roadway Classification

7 Documentation

8 Reston Parkway Capacity Improvements

9 Fairfax County Parkway & Spring Street Interchange

10 Fairfax County Parkway & Sunrise Valley Drive

11 Rock Hill Bridge at Sunrise Valley Drive

12A Meetings/Presentations

12B Additional Meetings/Presentations - Optional

March 2016January 2016 February 2016 October 2016April 2016 May 2016 June 2016 July 2016 August 2016 September 2016

05/16/16


Questions & Comments

For questions and comments about the study please contact:

Kristin Calkins: [email protected](703) 877-5710

http://www.fairfaxcounty.gov/fcdot/restonnetworkanalysis/



2050 2nd Tier RecommendationsNew Turn Lanes (Cont.)


Town Center Pkwy. & Sunset Hills Rd. - SB & NB left turn lanesTier 1 Tier 2

Tow

n C

ente

r P

kwy.

Sunset Hills Rd. Sunset Hills Rd.

Tow

n C

ente

r P

kwy.

AM: 106 sec.PM: 157 sec.

AM: 41 sec.PM: 40 sec.


2050 2nd Tier RecommendationsNew Turn Lanes (Cont.)


Wiehle Ave. & Reston Station Blvd.- WB left turn laneTier 1 Tier 2

Wie

hle

Ave.

Reston Station Blvd.

Wie

hle

Ave.

Reston Station Blvd.

AM WB approach: 121 sec.

AM WB approach: 60 sec.

reston network analysis: community meeting tier 1 & tier 2

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