Proposed Street Design Update - VDOT Summer 2015 Repaving Tysons

County of Fairfax, Virginia

Department of Transportation

Proposed Street Design Update VDOT Summer 2015 Repaving

Tysons

March 16, 2015


Department of Transportation 2

Overview • Why are we here? • What are we asking today? • What projects are being proposed? • Where are we in the process? • What are the next steps?


Why are we here? • VDOT 2015 Summer repaving includes many streets in Tysons • Opportunity to improve vehicular safety, improve traffic flow,

improve pedestrian safety, and add bicycle facilities. Implement the idea of a more walkable/bikeable Tysons today!

• Interim solution until development occurs and streets constructed as the ultimate sections described in the comprehensive plan

• Low to no cost for the County



What are we asking today?

• Your input and feedback – Support, questions, concerns, ideas


Photo Credit: sundaystreetssf.com


Project List – Road Diet

• Greensboro Drive • Tyco Road • Westbranch Drive

– Climbing Lane • Jones Branch Drive • Westbranch Drive • Park Run Drive



Project List (continued)

– Sharrows • Spring Hill Road

– Small section with bike lanes

• Westwood Center Drive



Proposed Network



Road Diets



Road Diets • Removing travel lanes from a roadway and reallocating

the space for other uses

• Rule of thumb: Streets with less than 20,000 vehicles per day don’t need four travel lanes


Street Name Current Traffic Volume

Greensboro Dr. 7,800 vehicles per day

Tyco Rd. 4,900 vehicles per day

Westbranch Dr. 2,700 vehicles per day


48’ 12’ 12’ 12’ 12’

48’ 12’ 12’ 6’ 6’ 12’

EXISTING PROPOSED


Road Diet Advantages

• Improved safety and mobility for cyclists and pedestrians

• Reduction in fastest speeds

• 20% to 50% crash reduction

County of Fairfax, Virginia In existing conditions, if a driver moves slightly over the double yellow line there is a risk for a head-on crash. In the proposed design, center turn lanes provide a buffer from oncoming traffic.

Existing Proposed


Existing Proposed

In existing conditions, if a driver swerves slightly to the right, there is a risk for a collision with the curb. In the proposed design, bikes lanes provide buffer from curb, although the bike lane shouldn’t be regularly used by drivers.


Existing Proposed

In existing conditions, if a driver pulls over with disabled vehicle, there is a risk of being in a rear-end collision. In the proposed design, bike lane can provide safe area during emergency conditions, and help to avoid a rear-end collision.


Existing Proposed

In existing conditions, if a driver is waiting for traffic to clear to make a left turn, there is a risk of a rear-end collision. In the proposed design, left turn lanes provide dedicated space to make turn, out of the way of through traffic.


Existing Proposed

In existing conditions, if two drivers are making left turns, they block each others sight distance and view of oncoming traffic. In the proposed design, turn lanes provide better sight lines and view of oncoming traffic.


Existing

In existing conditions, the sight lines for drivers exiting side streets can make it difficult to see oncoming traffic. In the proposed design, the through lane is away from the curb, and a driver has a better view of oncoming vehicles.

County of Fairfax, Virginia Lawyers Rd Road Diet


Lawyers Rd Road Diet Results

• Average speeds dropped by 1 mph

• Vehicles over 50 mph declined from 13% to 1% of traffic

• No change in traffic volume


0

5

10

15

20

25

Year 5 Year 4 Year 3 Year 2 Year 1 Year 1 Year 2 Year 3 Year 4 Year 5

Cra

shes

per

yea

r

Property Damage

Injury

Crashes in the Road Diet Section of Lawyers Rd.

B E F O R E A F T E R

Average 16 total crashes per year

Average 6 injury crashes per year 5 crashes per year

67%

A F T E R


Lawyers Road Survey • 851 responses, non-scientific, one year after implementation

• Does the road feel safer?

• Do you cycle more often on Lawyers?

• Do your auto trips take more time?

• Have auto speeds dropped?

• Did the project improve Lawyers?

Yes: 69%

Yes: 47%

No: 69%

Yes: 59%

Yes: 74%


Greensboro Drive • Spring Hill Drive to Solutions Drive • ADT – 7,800 • Increased safety for drivers, people walking, and

people on bikes • No change to intersection lane configuration • Minimal impact to LOS • Solutions Dr to International Dr proposed with sharrows



Greensboro Drive (continued)

• Discussed proposal with representatives from the Rotonda Community

• Heard about about concerns with their entrance and bus stops

• Proposing different cross section at entrance to accommodate concerns

• Evaluating option to move bus stop to far side of entrance


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Tyco Road • Low ADT- 4900 • Connection to Route 7

and Spring Hill Metro • Increased safety for all road users • No change to intersection lane

configuration = no negative impact to LOS



Westbranch Drive • Low ADT – 2700 • Improve safety for all road users • Extend network from future bike

improvements related to Arbor Row development

• Buffered bike lanes – High level of comfort


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Westbranch Drive


Before After


Lane Diet with Climbing Lanes



Jones Branch Dr /Westpark Dr / Park Run Drive

• Need to maintain 5 lanes: Existing width approximately 60’

• Proposed Climbing Lane: 5’ Bike Lane with 11’ travel lanes • Bike Lane in uphill direction • Shared lane downhill direction



Jones Branch Dr /Westpark Dr / Park Run Drive



Jones Branch Drive


Bike Lane

Bike Lane

Sharrows

Sharrows


Westpark Drive


Bike Lane Sharrows

Sharrows

Sharrows


Park Run Drive Option A


Bike Lane

Sharrows


Park Run Drive Option B


- 1 SB bike lane - 1 SB car lane - 1 LT lane - 2 NB lanes - 1 NB bike lane

- 1 SB bike lane - 2 SB car lanes - 1 LT lane - 2 NB car lanes - 1 NB bike lane

Analyzing traffic data. Climbing lane or bike lanes to intersection


Sharrows



Westwood Center Drive • Low ADT and narrow cross-section • Low speed • Not wide enough

for bike lanes • Sharrows

recommended



Spring Hill Road • Sharrows where there is a median, bike

lanes where there isn’t • Sharrows require no

change to existing lane configuration

• Bike lanes added by narrowing lanes, not removing any lanes Department of Transportation

37

ci.santa-rosa.ca.us

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAMQjRw&url=http%3A%2F%2Fci.santa-rosa.ca.us%2Fdepartments%2Fpublicworks%2Ftraffic%2Fstreetsmarts%2Fbicyclists%2FPages%2FSharrows.aspx&ei=B_4GVbPLL_b9sASlmYLQAQ&bvm=bv.88198703,d.cWc&psig=AFQjCNH-fb2oOAfAB2G9jH1qEYWTKlhCdg&ust=1426608007847764


Lane Diet with Bike Lanes



Spring Hill Road


Bike Lanes Sharrows

Sharrows


Future Traffic Analysis

• Development proposals included in analysis – Solutions Plaza/SAIC (Westpark Dr/Greensboro Dr/Rt. 7) – Greensboro Park Place (International Drive/Greensboro Drive) – Georgelas (Greensboro Drive/Spring Hill Rd/Tyco Road) – 7915 Jones Branch Drive (Jones Branch Dr/Westpark Dr) – Arbor Row (Westpark Dr/Jones Branch Dr/Westbranch Dr)

• Added in future trips from these developments to existing traffic counts



Future Traffic Analysis • Grid of streets helps to displace trips throughout

network

• No significant degrading of level of service at intersections – Keeping the same lane configuration for most intersection

approaches

• Developments will build out ultimate cross section approved in Tysons Plans – 4 lanes, bike lanes, and parking/circulator



Proposed Network



• People who ride bikes spend money • Multiple studies have shown a connection between

bicycle infrastructure and economic growth – Portland State study found people who ride bikes spent

$106/month vs $79/month by drivers at convenience stores

• Spend less on transportation, have more to spend on other goods and services

• NYC study showed that sales for businesses next to a protected bike lane increased 49%, while the rest of Manhattan only saw an 3% increase in sales1

1 http://www.nyc.gov/html/dot/downloads/pdf/dot-economic-benefits-of-sustainable-streets.pdf


Bikes mean Business


Bikes mean Business • Companies/Businesses want to attract young, new talent

– Denver Downtown Partnership said #1 demand from tech companies is bicycle lanes

• Bike facilities outside the door of an apartment/office is a selling point • Goldman Sachs study found that 30% of Millenials do not intend to purchase a car in the near future



Where are we in the Process? • Conceptual design complete

• Traffic analysis completed to verify

minimal change in delay at intersections

• Public outreach and comment period – Comment period open until April 1, 2015


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What are the next steps?

• Review public comments and redesign plans as necessary

• Design completion: April 2015

• Projects go to construction Summer 2015 Department of Transportation

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Thank You Questions/Comments? [email protected]


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Proposed Street Design Update - VDOT Summer 2015 Repaving Tysons

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