2017 VDOT Repaving and Restriping-Springfield, VA: Bicycle, Pedestrian, and Traffic Safety Improvements

County of Fairfax, Virginia
2017 VDOT Repaving and Restriping –
Springfield, VA
MARCH 28, 2017
ADAM LIND – PROJECT MANAGER
DEPARTMENT OF TRANSPORTATION
Bicycle, Pedestrian, and
Traffic Safety Improvements

Overview
•Why are we here?
•What projects are being
proposed?
•Where are we in the process?
•What are we asking from the
community?
•What are the next steps?
2

VDOT Annual Repaving
•VDOT Summer repaving includes several roads in the Hunter Mill
District. Opportunity to review pavement markings and street
design. Proposals are limited to restriping the existing pavement.
•Opportunity to slow speeding traffic, provide transportation
options, and improve traffic, bicycle, and pedestrian safety
•No additional cost for the County
•Want to hear from the community about issues/concerns
• Some concerns may be addressed through restriping
For information on all paving in Lee District visit:
www.virginiaroads.org
3

•Commerce Street
◦Old Keene Mill to Franconia Road – 1.2 mi
•Loisdale Road
◦Franconia Road to Spring Mall Dr – 0.4 mi
4
Streets Under Review

5
Bicycle Master Plan
Adopted by the Board of Supervisors
October 28, 2014
Bike Lanes
Bike Lanes
Bike Lanes Sharrow

Bicycle Facility Types
•Sharrow
•Climbing Lane
•Striped Shoulder
•Bike Lane
•Buffered Bike Lane More dedicated space and comfort
Less dedicated space and comfort

Sharrow-Shared Lane Markings (SLMs), or “sharrows,” are road
markings used to indicate a shared lane environment for bicycles and
automobiles. Among other benefits shared lane markings reinforce the
legitimacy of bicycle traffic on the street, recommend proper bicyclist
positioning, and may be configured to offer directional and wayfinding
guidance

Striped Shoulder-Creates dedicated space to be used by people
bicycling. 3’-4’ in width, but not the full width of a bike lane (5’). Added
benefit of creating additional buffer space between vehicles and people
walking on the sidewalk.

Bike Lane-Bike lanes designate an exclusive space for bicyclists through
the use of pavement markings and signage. The bike lane is located
adjacent to motor vehicle travel lanes and flows in the same direction
as motor vehicle traffic.

Climbing Lane-A climbing lane
incorporates two different facilities on
the same roadway segment; a bike lane
is provided in the uphill direction to
accommodate slower moving bicyclists
and a sharrow is provided in the
downhill direction, where bicyclists can
typically travel at a speed closer to
motorists.

Buffered Bike Lane-Buffered bike lanes are conventional bicycle lanes
paired with a designated buffer space separating the bicycle lane from
the adjacent motor vehicle travel lane and/or parking lane.

Lane Diets
12
A Lane Diet is generally described as narrowing travel
lanes from a roadway and utilizing the space for other
uses and travel modes.
Does not involve reducing the number of travel lanes
Benefits
◦Providing transportation alternatives and options
◦Increasing safety for non-motorized users
◦Reduce speeding

Lane Width and Vehicle
Speeds
13

Road Diet
•Removing travel lanes from a roadway and
reallocating the space for other uses
•Rule of thumb: Roads with less than 20,000 vehicles
per day don’t need four (or more) travel lanes
•Have now implemented road diets in several places
in Fairfax County
◦Lawyers Rd, Soapstone Dr, Kingstowne Village Parkway, Westbranch
Dr, Greensboro Dr, Park Run Dr, Beacon Hill Road, Ravensworth Rd
14

Commerce Street- Existing
15
•Old Keene Mill to Franconia Rd
•Fall 2016 Traffic Count: 10,500
vehicles per day (vpd)
• VDOT 2015: 23,000 vpd between
Backlick Rd and Franconia Rd
•Speed Limit: 35 MPH
•Three segments:
• 1) Old Keene Mill to Amherst Avenue
• 2) Amherst Avenue to Brandon Avenue
• 3) Brandon Avenue to Old Keene Mill

16
•Section 1) Old Keene Mill to Amherst Avenue
Commerce Street - Existing

17
Segment 1 Old Keene Mill to Amherst Avenue: 10,500 vpd
Commerce St– Traffic & Speed
Data
Southbound Direction
Speed Limit: 35 mph
85th
Percentile: 37 mph
76% Traffic: ≤ 35 mph
19% Traffic: 36-40 mph
0.5% Traffic: 46-50 mph
Northbound Direction
Speed Limit: 35 mph
85th
Percentile: 38 mph
67% Traffic: ≤ 35 mph

18
•1) Old Keene Mill to Amherst Avenue
• Convert the outside travel lane in each direction to a buffered bike lane
• Evaluate the addition of two new crosswalks with potential concrete refuge
island (funded, but separate from repaving and restriping)
•2) Amherst Avenue to Brandon Avenue
• Narrow the existing travel lanes to 11’
• Add bike lane east bound towards the bridge
• Shared lane/sharrow west bound away from the bridge
•3) Brandon Avenue to Old Keene Mill
• Create 4’ shoulder for bicycle use

19
•Section 2) Amherst Avenue to Brandon Avenue
•Section 3) Brandon Avenue to Old Keene Mill
Commerce Street- Proposed

20
•Section 1) Old Keene Mill to Amherst Avenue (street width varies)
Existing Proposed

21

22

23
•Old Keene Mill Intersection
• No changes to the lane
configuration approaching
the intersection

24
•Amherst Avenue Intersection
Existing Proposed
Through
+ right
Through
+ right

25
•Road Diet benefits everyone by:
• Improving sight distance
• Shortening crossing distance
• Reducing # of travel lanes to cross in a vehicle or on foot
• Providing refuge space
• Creating buffer between travel cars and vehicles
• Creating dedicated space for people to safely bicycle
• Reducing top end speeding

Traffic Impacts
• Intersections evaluated on average delay or Level of
Service (LOS)
• Intersections grade A-F, based off LOS
• Proposed changing of signal timing to
mitigate loss of one through lane EB
Level of
Service
Average
Delay
A <10 sec
B >10-20 sec
C >20-35 sec
D >35-55 sec
E >55-80 sec
F >80 sec

Traffic Impacts – Commerce
St
AM LOS
Existing
AM LOS
Road Diet
PM LOS
Existing
PM LOS
Road Diet
Amherst
Ave
D
(42.5 sec)
D
(44.2 sec)
D
(47.5 sec)
D
(50.5 sec)
• Eastbound Commerce St at Amherst Avenue
• Eastbound Commerce St 50% que length changed from
74’ to 151’ (AM) and 84’ to 196’ (PM)
• VDOT has ability to change signal timing to mitigate
delay impact from changing lane configuration

28
•Section 2) Amherst Avenue to Brandon Avenue
•Amherst Avenue to Backlick Rd
• Was repaved in 2015 when Amherst Ave and
Backlick Ave were repaved
• No proposed changes at this time, but may be able
to add sharrows sharrows

29
•Backlick Rd to Brandon Avenue
• Narrow Travel Lanes, EB bike lane, WB sharrow
Existing Proposed

30
•Section 3) Brandon Avenue to Old Keene Mill
• Narrow Travel Lanes, 4’ striped shoulder in each direction (5’ in
some places)
Existing Proposed
Should
er
Should
er

31
•1) Old Keene Mill to Amherst Avenue
•2) Amherst Avenue to Brandon Avenue
•3) Brandon Avenue to Old Keene Mill

Loisdale Road - Existing
32
•Franconia Rd to Spring Mall Dr
•VDOT 2015: 23,000 vpd
•Speed Limit: 35 MPH
•Two segments:
• 1) Franconia Rd to Loisdale Ct
• 2) Loisdale Ct to Spring Mall Dr

33
•Section 1) Franconia Road to Loisdale Ct

34
•Section 1) Franconia Road to Loisdale Ct
• Narrow Travel Lanes, 5’ bike lanes in each direction
Existing Proposed
Loisdale Road - Proposed

35
•Section 2) Loisdale Ct to Spring Mall Drive

36
•Section 2) Loisdale Ct to Spring Mall Drive
• Keep travel lanes at same width, add sharrows
Existing Proposed

Past Repaving Projects
2015 Road Diet Project – Westbranch Drive
•Pre-Project Conditions
•Five travel lanes 12’ wide
•Post-Project Conditions
•Three travel lanes 12’ wide
•Two buffered (6’) bike lanes 6’ wide
37

2015 Project – Westbranch Drive:
Before
38

2015 Project – Westbranch Drive:
After
39

Past Repaving Projects
2015 Lane Diet Project-Annandale Road
•Pre-Project Conditions
•Two travel lanes 16’+ wide
•Two parking lanes 8’ wide
•Post-Project Conditions
•Two travel lanes 11’ wide
•Two bike lanes 5’ wide
•Two parking lanes 8’ wide
40

2015 Project-Annandale Road:
Before
41

2015 Project-Annandale Road:
After
42

After – Annandale Rd
43
Post Lane Diet + Bike Lanes
•Speed/Traffic counts at two locations in Fall 2016
•Highest average speed was 35 mph
•No 85% percentile speed over 39 mph

Big Picture
44
“Safety in numbers: more walkers and
bicyclists, safer walking and bicycling”
Peter Jacobsen, 2000
•Research in the US
and internationally
shows that when
more people
walk/bike the safer it
becomes

Big Picture
45

Next Steps
•Comment period open for two weeks
• April 14, 2017
•FCDOT and VDOT will review input and update
designs
•Finalize design plans spring 2017 and repaving occurs
in summer/fall 2017
46

How to Comment
•Fill out comment sheets and submit tonight
•Mail comment sheets in over next three weeks
•E-mail comments to
DOTBicyclePrograms@fairfaxcounty.gov
•Presentation will be available online: http://
www.fairfaxcounty.gov/fcdot/bike/commerce-loisda
Thank You for Participating
47

2017 VDOT Repaving and Restriping-Springfield, VA: Bicycle, Pedestrian, and Traffic Safety Improvements

Recommandé

Recommandé

Contenu connexe

Tendances

Tendances (20)

En vedette

En vedette (20)

Similaire à 2017 VDOT Repaving and Restriping-Springfield, VA: Bicycle, Pedestrian, and Traffic Safety Improvements

Similaire à 2017 VDOT Repaving and Restriping-Springfield, VA: Bicycle, Pedestrian, and Traffic Safety Improvements (20)

Plus de Fairfax County

Plus de Fairfax County (20)

Dernier

Dernier (20)

2017 VDOT Repaving and Restriping-Springfield, VA: Bicycle, Pedestrian, and Traffic Safety Improvements