HomeMy WebLinkAbout2014-07-10_Maguire RoadMaguire Road Roundabout
Town of Lexington
Hartwell Avenue
25 Percent Design
Plan Development
July 10, 2014
Agenda Agenda
Project Background
Existing Conditions
Roundabout Attributes
Proposed Conditions
Questions and Comments
Background - 2010 Traffic Plan
Current Scope
Existing Pedestrian/Bicycle Accommodations
On-Street
Bike Lanes
No Pedestrian
Accommodations
Existing Maguire Road Operations
90
100
0
25
50
75
100
125
AM Peak PM Peak
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LOS F
LOS E
Recent Crash Experience
Corridor Study Plan
Existing Conditions
Alternatives
Signal Roundabout
Why a Roundabout?
•Compatible with overall plan
•It “fits”
•Adequate capacity
•Safer
•Handles all modes
•No signal maintenance
Compatibility
Roundabout Plan/Footprint
Taking
Required
Minor Taking
Required Minor Taking
Required
Pedestrian/Bicycle Accommodations
Proposed
Sidewalks
On-Street
Bike Lanes
Proposed
Crosswalks
Roundabout Safety
Source: NCHRP Report 672
Roundabout Safety
•Lower speeds
•Fewer crashes
•Less severe crashes
•Fewer conflict points
Existing Operations with
Roundabout
1
3
7
2
1
4
0
1
2
3
4
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7
8
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Maguire Road
Northbound Hartwell
Southbound Hartwell
Future Operations with
Roundabout
6 7
28
3 1
10
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5
10
15
20
25
30
AM Peak PM Peak
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Maguire Road
Northbound Hartwell
Southbound Hartwell
Roundabout Operations
Signal Alternative
Fits within ROW
Signal Pedestrian/Bike Accommodations
Proposed
Multi-Use Path
Proposed
Crosswalks
Proposed
Sidewalk
Future Operations with Signal
50
23
80
39
24
14
45 50
0
10
20
30
40
50
60
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80
90
AM Peak PM Peak
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Overall
Maguire Road
Northbound Hartwell
Southbound Hartwell
Future Signal Operations
Signal Operations
Comparison of Intersection Options
Roundabout Signal
Cost $1.3 m $1.5 m
Footprint Some sliver takings Fits within ROW
Operations More capacity Adequate
capacity
Safety Safer Safe
Impact on Bridge May require minor
widening
Requires widening
Compatibility Yes Not so much
Questions/Comments
Contact Information
jlivsey@lexingtonma.gov
Other Work – Bridge Study
Other Work – Bridge Study
Other Work – Bedford Street
Other Work – Bedford Street
Other Work – Bedford Street