pleasant plains road corridor study h478800 / h478850€¦ · dpwandyou.com | making a difference,...
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Pleasant Plains Road Corridor Study
H478800 / H478850Presented by:
Anne Arundel County Department of Public Works
July 24, 2019
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Study Goals
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• Respond to community requests for bike & pedestrian accommodations, corridor and roadside safety concerns, and operational improvements
• Expand upon 2018 study
– Additional operational, and geometric study
• Engage community
• Develop evaluation criteria on corridor deficiency and alternative improvement rating criteria
• Establish preferred conceptual improvements
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Study Methodology
3
• Identify community concerns
• Federal Highway Administration (FHWA) systemic safety planning process
• Identify corridor deficiencies
• Explore DPW preferred practices
• Establish alternative improvement evaluation criteria
• Apply ratings to alternatives
• Develop conceptual plan, costs, impacts
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Study Area
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SB view into curve
SB view into straight-away
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Study Area
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• Historic / Scenic designation (potential visual character restrictions on improvements)
• Rural Collector functional classification
Land Use Legend
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Corridor Characteristics
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Typ. Sections Pavement width 1A & B 20’ 2A & B 28’ 3 36’
1A 2A
3 2B
1B
• 1.7 miles in length
• 3 typical sections
• 30-40MPH speed limits
• 15-20MPH advisory speed limits through curves
Typical section
• 10’ wide travel lanes
• 8’ wide paved shoulders
• Lack of roadside drainage facilities
Speed limit transition point –
40MPH to north / 30MPH to
south
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Corridor Characteristics
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1
3 4
5 8
6 7
2
Intersections1. MD179 St Margarets Rd
2. Kingsberry Dr
3. Old Farm Bridge Rd / Davidson Cole Rd
4. Harmony Acres Rd / Weems Farm Rd
5. Milvale Rd
6. Hidden Point Rd
7. Cherry Rd
8. Whitehall Beach Rd / Red Cedar Rd
Horizontal curves1. MD-179 west of Pleasant Plains
Rd
3. Old Farm Bridge/Davidson Cole
4. Harmony Acres/Weems Farm
5. North of and at Milvale
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Curve 1 / MD179 at Pleasant Plains Road
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• WB MD-179 stopping sight distance along Curve 1
• Pleasant Plains Rd intersection sight distance to the west
• Prominent movement to/from Pleasant Plains Rd at Intersection 1
WB approaching vehicle Stopped vehicle EB approaching vehicle
1
Curve 1
View to east from Pleasant Plains Rd
EB View along MD 179 at Curve 1
280’ ISD required /
Actual = 100’ +/-
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Pleasant Plains Road at Kingsberry Drive
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• High speeds along Pleasant Plains Rd
• Stopping Sight Distance (SSD) and/or Intersection Sight Distance (ISD) through vertical curve on Pleasant Plains Rd SB approach potentially substandard (for 40MPH)
2
SB approaching vehicle Stopped vehicle
NB approaching vehicle
SB Pleasant Plains Road sight line over vertical curve
Crest of
vertical curve
on Pleasant
Plains RD
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Pleasant Plains Rd at Curve 2 / Old Farm Bridge Rd / Davidson-Cole Rd
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• Pleasant Plains Rd WB stopping sight distance in Curve 2
• Pleasant Plains Rd SB/EB vehicles crossing double yellow lane marking
• Observed speeds above advisory limit
SB approaching vehicle EB approaching vehicle
3
Curve 2 155’ SSD required (per 15MPH
Advisory Speed) / Actual = 100’ +/-
WB view into Curve 2
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Pleasant Plains Rd at Curve 3 / Harmony Acres Rd / Weeks Farm Rd
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• Pleasant Plains Rd EB stopping sight distance (sight line outside Right-of-Way?)
• Pleasant Plains Rd NB/WB vehicles crossing double yellow lane marking
NB approaching vehicle
EB approaching vehicle
4 Curve 3
155’ SSD required / Actual appears
adequate (sight line outside ROW)
EB view into Curve 3
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Pleasant Plains Rd at Milvale Road / Curve 4 / Curve 5
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• Stopping sight distances• Observed speeds above advisory speed
limit • Vehicles crossing double yellow line
NB approaching vehicle SB approaching vehicle
Curve 4
5
Curve 5
155’ SSD required /
Actual = 100’ +/-
155’ SSD required / Actual = sub-
standard (sight line outside ROW?)
155’ SSD required / Actual = sub-
standard (sight line outside ROW?)
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Pleasant Plains Rd at Hidden Point Road / Curve 6
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• Pleasant Plains Rd approach grades contribute to speeds above speed limit and added stopping sight distance requirements
• Vehicles crossing of double yellow lane line along Pleasant Plains Rd
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Curve 6
View to northwest from Hidden Point Rd
View from Pleasant Plains Rd WB approach
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Pleasant Plains Rd at Cherry Road
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• Intersection skew (angle)
• Bus/large vehicle turning movement
• Primary Pleasant Plains Rd traffic origin/destination
7
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Pleasant Plains Rd at Whitehall Beach Rd / Red Cedar Rd
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• High speeds Pleasant Plains Rd WB to Red Cedar Rd
• Intersection skew• Intersection sight distance on
Whitehall Beach looking east• Low traffic volumes
8
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Speed Data
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1. 85% speed along straight section is 48MPH vs posted 40MPH speed limit
2. 85% speed near MilvaleRoad curve is 34MPH vs posted 20MPH advisory speed limit
2
1
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Traffic Volume Data
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2
1
• Weekday average daily volume = 2,900
• Weekend average daily volume = 2,400
• Vehicle Class: 98% two-axel
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Crash Data
18
2
1
• 40 crashes from 2008 to 2018, 7 on MD-179, 33 on Pleasant Plains Rd
• 24 out of 33 crashes on Pleasant Plains ROR (Run Off Road), 15 during day
• 3 SS (Sideswipe) all during day
• 6 involved Deer (half during day)
• 7 on MD-179 Intersection accidents during day
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Constraints
19
2
1
• Historic/Scenic designation (potential visual character restrictions on improvements)
• Variable Right-of-way
• Private fencing
• Overhead utilities
• Roadside steep slopes
• Lack of roadside drainage
• Environmental resources
• Critical Area
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Existing Conditions Summary
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2
1
• Prevalence of substandard sight distance at intersections and curves
• Turning movements at Cherry Rd and Pleasant Plains Rd (Intersection 7)
• ROR (run-off-road) crash patterns
• High speeds along straight-aways
• Lack of traversable roadside space (paved or unpaved)
• Obstructions in clear zone
• Lack of pavement width (particularly in curves) to accommodate bikes/pedestrians
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Next Steps
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2
1
• Existing Conditions Report
• Public Meeting #1
• Develop Conceptual Improvement Options
• Public Meeting #2
• Final Report with Preferred Concept
You Are
Here!
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Conceptual Improvement Primer
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2
1
Quick Start Guide to Using Crash Modification Factors (CMF) -http://www.cmfclearinghouse.org/collateral/fhwasa17007.pdf)
• Step 1: Process community feedback and input
• Step 2: Develop list of countermeasures (samples)• Widening pavement• Adding shoulders• Reducing speed limit• Modifying curve radius• Adding rumble stripes near curves• Installing bike/pedestrian warning signs
• Step 3: Identify all relevant CMF and preferred practice weighted scoring for each potential countermeasure
• Step 4: Confirm scoring applicability
• Step 5: Select a single CMF weighted score for each countermeasure
• Step 6: Apply the CMF scoring
• Step 7: Develop Countermeasures for presentation at Public Meeting #2
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Who to Contact
Debra Russell, P.E.
Project Manager, Transportation Engineering
Anne Arundel County Department of Public Works
Bureau of Engineering
Email: [email protected]
Phone: (410) 222-1340
Questions?
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Bureau of Utility
Operations
24-Hour Emergency Water
Services: (410) 222-8400
Billing Inquiries: (410) 222-1144
Bureau of Waste
Management
Services
Bulk Trash Service/Curbside
Collections: (410) 222-6100
Bureau of Highways
Northern District: (410) 222-6120
Central District: (410) 222-7940
Southern District: (410) 222-1933
Traffic Lights/Signs: (410) 222-1940
Bureau of Engineering
General Inquiries: (410) 222-7500
@AACoDPWwww.facebook.com/annearundeldpw
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