North Kings Highway (VA 241) Intersection Improvements Study Community Meeting

County of Fairfax, Virginia
Department of Transportation
Community Meeting
Mount Eagle Elementary School
June 24, 2014
North Kings Highway (VA 241)
Intersection Improvements Study

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Background
• Penn Daw Special Study
(PA ST10-IV-MV1)
• Citizen Task Force
• Evaluate Future Vision
• Re-Plan the Study Area for
Residential, Retail, and/or Office
Uses
• 735 Residential Units 70,000
Square Feet Retail
(minimum)
• Adopted April 10, 2012

Background (Cont’d)
• Redevelopment
o Insight/Spicer Property
(RZ 2011-LE 016)
245 MF DU
Approved July 10, 2012
o Grande at Huntington
(RZ 2012-MV-018)
275 MF DU
Approved June 4, 2013
o Penn Daw Plaza
(RZ 2013-LE-008)
441 DU, 45,500 SF Retail
Approved January 14, 2014
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Background (Cont’d)
• Transportation Issues Identified
o Poor traffic operations
North Kings Highway
Richmond Highway
o Walkability, Safety
o North Kings Hwy crossings lacking
o School Street cut-through traffic
• Poag St and Schaffer Dr should not be connected
• Realign intersections of North Kings Highway with Shields Avenue &
School Street
4

Realigning North Kings Highway
at Shields Ave & School St
• Earlier Concepts Presented
o Blue Alternative
o Red Alternative
o Black Alternative
o Ultimate Alternative
• Community Meeting
Mount Eagle Elementary School
May 15, 2013
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Blue Option
6
• Skewed Intersection – Safety Concerns
• Significant Property Impacts

Red Option
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• “Squared” Intersection
• Significant Property Impacts

Black Option
8
• Intersection Spread and
Skewed – Major Safety
Concerns for Peds and Drivers

Ultimate Alignment
9
• Right-In, Right-Out (RIRO)
Access for School Street

Realigning North Kings Highway
at Shields Ave & School St
• New Options Developed and Evaluated
o No-Build
o No-Build (Including Proffers)
Insight/Spicer
Grande at Huntington
Penn Daw Plaza
o Build Alternatives – Realign North Kings Hwy/Shields Ave
Alternative 8A – Dual Roundabouts
Alternative 8B – Roundabout at Jamaica Drive
Alternative 8C – No Roundabouts
Alternative 8D – Roundabout at Poag Street
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No-Build
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No-Build (2020)

School Street & Kings Hwy Intersection
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No-Build (2020)
• Pros
o Full access on School Street at North Kings Highway
o No improvement cost or property impacts
• Cons
o Inefficient Traffic Signal Operation due to closely spaced signals on
North Kings Highway at School Street and Shields Avenue
o System delay 79% worse and North Kings travel time 34% worse
than existing conditions (2013)
o Long queues anticipated
 SB N Kings Hwy at School St in the AM and PM (~840’ & 1,100’+)
o Unimproved pedestrian safety, walkability
o Cut-Through Traffic on School Street
13

No-Build with Proffers
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No-Build Including Proffers (2020)

No-Build Including Proffers (2020)
• Improvements Through Proffers
o New Traffic Signal at North Kings Highway and Poag Street (Insight)
o Exclusive NB left turn lane on Kings Hwy at Poag St (Penn Daw Plaza)
o Additional NB left turn lane on N Kings Hwy at Shields Ave (Insight)
o Additional WB through lane on Shields Ave at N Kings Hwy (Grande)
o Exclusive EB left turn lane on School Street at N Kings Hwy (Insight)
o New Crosswalks on N Kings Hwy, Poag St and School St (Insight)
• Pros
o Full access on School Street at North Kings Highway
o No improvement cost to County or property impacts
o System delay 53% better and North Kings travel time 54% better than
No-Build (2020)
o Enhanced Pedestrian Crossing
15

No-Build Incl. Proffers (Cont’d)
• Cons
o Inefficient Traffic Signal Operation due to closely spaced signals
on North Kings Highway at School Street and Shields Avenue
o Long queues still anticipated
 SB N Kings Hwy at School St in the AM & PM (~1,000’ & ~1,100’)
o Cut-Through Traffic on School Street
16

Alternative 8A
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Option 8A (2020)

Option 8A (2020)
• Identifying Features
o Single Traffic Signal at Realigned Intersection of N Kings and Shields
o Roundabouts at both Poag Street and Jamaica Drive
o HAWK pedestrian signals north and south of Jamaica Dr Roundabout
o Right-In, Right-Out (RIRO) access for School St at North Kings Hwy
• Pros
o Discourages cut-through traffic on School Street
o Mid-block crosswalks with HAWK pedestrian signals
o Safer, efficient traffic operations with roundabouts
o Reduced system delay (17 hours AM, 38 hours PM)
o Reduced avg travel times on North Kings Hwy (14 sec AM, 22 sec PM)
o Shorter queue lengths on SB N Kings Hwy PM (~110’)
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Alternative 8A (Cont’d)
• Cons
o Increased travel time to/from School Street
o RIRO access for the Grande at Huntington on Shields Avenue
o Highest estimated cost of $6.55 million
o Highest property impact - 6 parcels and up to 0.57 acres of land
o Reduced parking on parcels 002 and 012
o Potentially significant property impacts
Mount Eagle Elementary School
Zipps Dry Cleaners
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HAWK Pedestrian Signals
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Alternative 8B
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Option 8B

Alternative 8B (2020)
o Traffic signal at Poag Street
o Roundabout at Jamaica Drive
o SB U-turn lane on N Kings Highway at Poag Street
• Pros
o Additional pedestrian crossing at Poag St
o Safer, efficient traffic operations with roundabout
o Reduced avg travel times on North Kings Hwy (7 sec AM, 28 sec PM)
o Shorter queue lengths on SB N Kings Hwy AM (~110’)
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Alternative 8B (Cont’d)
• Cons
o $5.05 million estimated cost
o 6 parcels and up to 0.42 acres of land impacted
o Reduced parking on parcel 012
Mount Eagle Elementary School
Office Depot
 Need for U-turn bulb-out requires further evaluation
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Alternative 8D
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Option 8C (2020)

Alternative 8C (2020)
o Traffic signal at Poag Street
o No roundabouts
o SB U-turn lane at Poag St and NB U-turn lane at Jamaica Drive
o RIRO at Jamaica Drive
• Pros
o Additional pedestrian crossing at Poag St
o Lowest estimated cost ($4.75 million) & right-of-way impact (0.33 acres)
o Best reduction in travel time N Kings Hwy (13 sec AM, 37 sec PM)
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Alternative 8C (Cont’d)
• Cons
o 6 parcels and up to 0.33 acres of land impacted
o Reduced parking on parcels 012
Office Depot
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Option 8D (2020)

Alternative 8D (2020)
o Roundabout at Poag Street
o NB U-turn lane at Jamaica Drive
o RIRO at Jamaica Drive
• Pros
o Safer, efficient traffic operations with roundabout
o Best reduction in system delay (17 hours AM, 40 hours PM)
o Best reduction in travel time N Kings Hwy (20 sec AM, 30 sec PM)
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Alternative 8D (Cont’d)
• Cons
o 6 parcels and up to 0.48 acres impacted
o Reduced parking on parcels 002 and 012
Zipps Dry Cleaners
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Summary / Comparison
Factor / Option No-Build
No-Build
with
Proffers
Alt 8A
(Dual
Roundabouts)
Alt 8B
(Jamaica Dr
Roundabout)
Alt 8C
(No
Roundabouts)
Alt 8D
(Poag St
Roundabout)
Cost (1) None Developer $6.55M $5.05M $4.75M $6.35M
ROW Impact None Proffered High (2)(3) Moderate
(3)(4) Low (4) Moderate
(2)
System Delay Savings
Vs. No-Build w Proffers
Peak Hour (hour)
AM - - -17 -9 -9 -17
PM - - -38 -37 -37 -40
North Kings Highway
Travel Time Savings
Vs. No-Build w Proffers
Peak Hour, Dir (sec)
AM
NB
- - -14 -7 -13 -20
PM
SB
- - -22 -28 -37 -30
Pedestrian Safety, Walkability Low Moderate Moderate High High Moderate
Vehicular Safety Low Low High Moderate Moderate High
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(1) Assumes VDOT Planning Level Cost Estimates Plus ROW & Business Impacts ($50/SF + $50,000/Parking Space)
(2) Potentially significant impact to Parcel 002 (Zipps Dry Cleaners)
(3) Potentially significant impact to Parcel 007 (Mount Eagle Elementary School)
(4) Potentially significant impact to Parcel 012 (Office Depot)

Recommendations
Based on Performance
• Alternative 8C
o Lowest Cost
o Least Property Impact
o Best Travel Time Savings on N Kings Hwy (Tie with 8D)
o Competitive Improvement to System Delay
o Most Enhanced Pedestrian Safety, Walkability
o Improved Vehicular Safety
o Reduced Cut-Through Traffic on School Street
• Alternative 8D
o Best Travel Time Savings on N Kings Hwy (Tie with 8C)
o Best Improvement to System Delay
o Enhanced Pedestrian Safety, Walkability
o Most Improved Vehicular Safety
o Reduced Cut-Through Traffic on School Street
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School Street
• RIRO Access Allows for:
o Reduction in cut-through traffic
o Safer, more walkable community
o Better operations on North Kings Highway
o Lower system delay
o Safer Pedestrian Signalized Cross walk at School Street than no-
build
• Roundabouts and/or U-turn Lanes at Poag St and Jamaica Dr Provide:
o Easy access to and from School Street
o Better operations on North Kings Highway
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Questions?
Arpita Chatterjee & Thomas Burke
Fairfax County Department of Transportation
4050 Legato Road, Suite 400
Fairfax, VA 22033
(703) 877-5600
Thomas.Burke@FairfaxCounty.gov
Arpita.Chatterjee@FairfaxCounty.gov
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North Kings Highway (VA 241) Intersection Improvements Study Community Meeting

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