slurry seals and bicycles a marriage made in heaven?slurry seal complete street opportunities...
TRANSCRIPT
1
Slurry Seals and BicyclesA Marriage Made in Heaven?
2011 APWA Sustainability in Public Works Conference
Portland, Oregon
Your Presenters
Scott Gibson, P.E.Project Manager
Chris Louis, P.E.Senior Traffic Engineer
Regional Transportation Commissionof
Washoe County, Nevada
Why Do We Care?
• RTC of Washoe County.– Transit (mode split and trip reduction) – MPO (long range mobility)– Street and Highway (complete streets policy)
• Active Cycling Community (Greg Lemond).
• We Ride.• Cyclists are Tax Payers Too!
2
Complete Streets
Before incomplete urban street
� 4-lane undivided� No center turn lane� No bike facilities� Numerous driveways� Pedestrian unfriendly
� Wide lanes� No designated
parking
Complete Street Opportunities
Why?
• Increase safety• Improve livability and quality
of life • Economic development• For users of all ages, modes
and mobility's• Improved traffic flow• More on-street parking• Connectivity
A Complete Street Concept
6
From This…
…To This
3
Complete Street Opportunities
Pavement Preservation Projects� Reconstruction� Road Widening� Corrective Maintenance� Slurry Seal
Complete Street OpportunitiesChecklist:� Road conversion� wide sidewalks� bike lanes� special bus lanes
� comfortable and accessible transit stops� frequent crossing opportunities� median islands� accessible pedestrian signals� curb extensions� narrower lanes, 10’ OK
� tight curb radii
Complete Street Opportunities
How• Road conversions• Narrow lanes, 10’ OK!• Just stripe it!
4
Complete Street/Road Conversions
Significant safety benefits: lower speeds, reduced conflict points and crashes, better sight distance, refuge for pedestrians, place for bicycles
6 conflict points Vs. 2 conflict points
Safer Intersections: reduced conflict points and crashes
8 conflict points Vs. 4 conflict points
Complete Street/Road Conversions
Before/After Studies
Wells Ave. in Reno
After results↓ Crashes 31%↓ Speeds 24%• LOS no change
5
Toward a Complete Street
Wells Ave. in Reno
� Bike lanes� Curb extension� Frequent
crossing opportunities
� Medians� Designated
parking lane� 10’ lanes� Tight curb radii
Toward a Complete Street
Wells Ave. in Reno
� Roundabout� Pedestrian
refuge� Lighting� Landscaping� Shade trees� Benches
� Public art
Toward a Complete StreetBike lane miles added
2009 – 26 miles 2010 – 52 miles 2011 – 22 miles
6
Toward a Complete Street
Street conversions:2009 – 1 project2010 – 6 projects2011 – 2 projects
Toward a Complete Street
Victorian Pkwy before project
Toward a Complete Street
Victorian Greenway Project areas first cycle track
7
Toward a Complete Street
Victorian Greenway Project areas first cycle track
Making Adjustments/Costs
• Striping
• Lane reconfiguration
• Signal Head placement
• Signal timing
• Loop detection
• Continued evaluation
• Added maintenance costs
Preventive Maintenance Provides HUGE Opportunities
• Rehabilitation/Reconstruction – 15-30 Lane miles/year.
• Preventive Maintenance – 150 -200 Lane Miles/Year
• RTC is on a 7 year cycle of microsurfacing roadways.
Provides a blank palette of opportunities enhance bicycle and pedestrian space.
8
Rider Types
• Fast Roadie• Commuters• Families• Cycle Chic• Service Workers
Slurry/Bicycle Issues
• Rough Surfaces
• Ghost Striping
• Construction Lane Configuration
• Colored Lanes
• Build Solutions into Your Contracts
Rough Surfaces (Conventional Type III)
9
Type II Bike Lanes
Type II Bike Lanes
Type II Bike Lanes
10
Type II Bike Lanes
Type II Bike Lanes with Parking
Ghost Striping
11
Ghost Striping
Grind off ALL Old Striping!
Lane Configurations
12
Lane Configurations
Don’t Kill Your Road!
Conclusions
• Build the bike friendly components into the contract.
– Type II or Type I in bike lanes.
• Requires two Stockpiles.
– Grind off all old stripes.
– Raise critical valves and manholes.
• RTC has seen little escalation to program costs even with added components.
Conclusions
• Preventive Maintenance Alone is a sustainable practice but it can go beyond just the efficient maximization of the pavement network.
• If integrated into the overall transportation and planning scheme it provides great opportunities to:
– Provide Complete Streets.
– Enhance Livability.
– Increase Modal Split.
– Gain Program Support.
• Preventive Maintenance can be a Multiplier for Sustainability!
13
Questions?