Interstate 495 & Route 9 Interchange Improvement Study · Interstate 495 & Route 9 Interchange...
Transcript of Interstate 495 & Route 9 Interchange Improvement Study · Interstate 495 & Route 9 Interchange...
Interstate 495 & Route 9 Interchange Improvement Study
Study Advisory Group Meeting #3
Februaryy24 ,,2012
MassDOT
Agenda
•Recap of SAG Meeting #2
•Future (2035) Conditions
•Alt ti f C id tiAlternatives for Consideration •Next Stepps/Discussion
MassDOT
Meeting #2 Recap – Summary of Issues
• High Peak Period Commuter Traffic Volumes
• Existing Roadway Geometry is Substandard
• • Accident Accident Rates Rates are are HighHigh
• Congestion Reduces Mobility
• Poor Pedestrian/Bike Facilities
• Available commercial and industrial spacespace exceeds prp ojojecteddemand
• Potential demand for additional retail development
MassDOT
Future (2035) Traffic/Roadway Conditions
•Traffic Volumes
•Capacity Analysis Results
• IIssues
MassDOT
Traffic Volume Projection - 2035 No-Build • CTPS Regional Model Forecasts
– Uses year 2035 Population and employment projections
– Land Land UseUse ssummarized ummarized inin TTraraff ffic ic AnalysisAnalysis ZoneZones
– 4-Step Model Process – Trip Generation, Mode Split, Distribution, and Assiggnment
– Roadway peak volumes are converted to turning movements at intersections
MassDOT
I-495 Peak Hour Traffic Volume Growth
2004 2011 2035
North of Route 9 AM 9,700 8,900 10,350
North of Route 9 PM 9,650 8,550 9,900
South of Route 9 AM 9,850 9,000 10,700
South of Route 9 PM 9,850 9,190 10,600
South of I-90 AM 9South of I -90 AM 9,990 9990 9,210 11210 11,000000
South of I-90 PM 10,100 9,620 11,350
MassDOT
Interchange Peak Hour Traffic Volume Growth
2004 2011 20352004 2011 2035
I‐495‐Route 9 AM ,5 950 6,810 8,050 , , ,
I‐495‐Route 9 PM 5,800 6,590 7,600
I‐495/‐I‐90 AM 6,650 6,690 7,900
I‐495/‐I‐90 PM 6,550 6,830 7,450
MassDOT
AM Peak Hour Interchange Traffic Volumes
Highest Traffic Volumes
• II-495495 NNortthbhboundd
• Rt. 9 Eastbound / WWeestboundstbound
• I-495 Northbound to
II-9090 EastboundEastbound
MassDOT
PM Peak Hour Interchange Traffic Volumes
Highest Traffic Volumes
• II-495495 SSoutthbhb oundd
• Rt. 9 Eastbound / WWeestboundstbound
• I-90 Westbound
RampRamp
MassDOT
AM Peak Hour Route 9 (East)
• High Rt. 9 Eastbound VolV lumes
• High Turning
Movements atat MovementsEMC
MassDOT
PM Peak Hour Route 9 (East)
• High Rt. 9 We stbound VolV lumes
• High EMC VoVolluummee to to RRtt . 9Westbound
MassDOT
AM Peak Hour Route 9 (West)
MassDOT
• High Rt. 9 We stbound VolV lumes
• Heavy Connecto rRdRd . SouthbounSouthboundLeft Turn
PM Peak Hour – Route 9 (West) • High Rt. 9
Eastbound VolV lumes
MassDOT
2035 Roadway Improvement Assumptions EMC Planned Improvements at Crystal Pond RoadEMC Planned Improvements at Crystal Pond Road
MassDOT
2035 Peak Hour Level of Service Route Route 99 aat t II-495 495 InterchangeInterchange
Interchange Movement Peak Hour LOS
Route 9 WB on-ramp from I-495 SB (merge) AM/PM E/D
I-495 SB off-ramp to Route 9 WB (diverge) AM/PM D/D
I-495 SB at Route 9 ramps (weave) PM D
I-495 NB off-ramp to Route 9 EB (diverge) AM E
I-495 SB on-ramp from Route 9 EB (merge) PM D
Route 9 WB off-ramp to I-495 NB (diverge) PM D
I-495 NB on-ramp from Route 9 WB (merge)I 495 NB on ramp from Route 9 WB (merge) PM DD I-495 NB at Route 9 ramps (weave) AM/PM E/D
MassDOT
2035 Peak Hour Level of Service I I-90 90 atat II-495 495 InterchangeInterchange
Interchange Movement Peak Hour LOS
I-495 NB to I-90 (diverge) AM/PM F/D
I-90 to I-495 NB (merge) AM E
I-495 SB to I-90 (diverge) AM/PM F/D
I-90 to I-495 SB (merge) PM F
MassDOT
2035 Peak Hour Level of Service Route Route 99 (East) Signalized (East) Signalized Intersectionss
AM
Intersection
Intersection PM
Computer Drive and Route 9 Ramps C A
Connector Road and Research Drive D D
Research Drive and Route 9 RampsResearch Drive and Route 9 Ramps BB DD
Connector Road/Computer Drive F F
Research Drive/Friberg Parkway D F
MassDOT
Peak Hour Level of Service 2035 2035 RouteRoute 9 9 (W(W est)est) SSignalized ignalized Intersectionons Intersecti
Intersection AM PM
R t 9 EB/C li D i Route 9 EB/Coslin Drive F F FF Route 9 EB/#352 Driveway C C Route 9 EB/ Crystal Pond Road* y C BRoute 9 EB/ Deerfoot Road E E Route 9 WB/ Deerfoot Road F D Route 9 WB/# 325 Driveway Route 9 WB/# 325 Driveway D D FF Route 9 WB/Flagg Road F F Route 9 WB/Park Central Drive F F * Assumes future improvements Note: The intersection of Washington Street with Route 9 EB is assumed to be eliminated in the future as part of the proposed EMC development.
MassDOT
Summary of Traffic Issues
• I-495 Traffic Volumes Increase 10-20% • Rt.9 Traffic Volumes Increase 10% • • TTrafraffic fic Increases Increases Degrade Degrade Operations Operations at at MostMost
Locations
MassDOT
Future Demographics and Land Use • Population
• Employment
• Land UL d seU
MassDOT
Population and Employment Growth 2009 to 2035 Town 2009 2035 Percent Change PopulationPopulation Southborough 9,584 10,868 13% Westborough 18,468 21,110 14% Employment Southborough 6,590 7,688 16% Westborough 22,749 27,690 21%
MassDOT
Alternatives for Consideration
•Traffic/Roadway
•Transit/TDM
••Pedestrian/Pedestrian/ BikeBike
MassDOT
Traffic/Roadway Alternative Types
•Ramp Improvements
•Driveway Consolidation/Access Management
••CollectorCollector-Distributor Distributor RoadRoad
• Interchange Improvements
• ITS
••AlternateAlternate TToll oll Collection Collection TTechnologyechnology
MassDOT
Interchange Ramp Improvements I-495 at Rt. 9
MassDOT
Rt. 9 Improvements at I-495 Interchange West
MassDOT
Rt. 9 Improvements at I-495 Interchange East
MassDOT
I-495 at I 90 Interchange Ramp Improvements
MassDOT
Driveway Consolidation
EMC Southborough Executive Place
Unisource Distribution
Warehouse
Law Office
Gulf Station
Cumberland Farms
Auto
Clark University Office
Wendy s Volvo
Beer & Wine
9
C O S L I N DR
BAN
TRY
RD
TARA RD
C O S L I N
W A Y
FLAG
G R
D
W A S H I N G T O N ST
C R Y S T A L P O N D R D
T U R N P I K E R D
MassDOT
Collector-Distributor Road Existing I-495
0 100500 10050
Feet
CD Road Alternative Shift Mainline
to an
i
Medi
Convert M i l
to Median
Mainline to CD Road
50 0100
No Increase in Overall
ROW Width
0 10050
Feet
MassDOT
Collector-Distributor Road Options
• CD Road – Short Option
– Focused on Route 9
– 1.25 miles long
• CD Road – Long Option
– Extends to south of I-90
– 2.75 miles long
MassDOT
I-90/I-495 Interchange Improvement(CMRPC I-495 Study)
MassDOT
Transit/TDM Alternatives
• WRTA/MWRTA Limited Stop Bus Connection along Route Route 99
• Shuttle Service from Westborough and Southborough CommuterCommuter Rail Rail StationStations
• Expand TMA Participation
• Park & Ride Lots
MassDOT
Preliminary Transit Alternative Concept 8 5
Westborough Technology
Park
9
Westborough
EMC9
Business Park
8 5
R t 85 R t M lb h H ki t (b th ) N
Route 85 Route Marlborough-Hopkinton (by others) I-495/MetroWest Development Compact Priority Development Area
MassDOT
Pedestrian/Bike Improvements
• Improve Pedestrian Sidewalks and Crosswalks • Implement Bike-Sharing program
MassDOT
Next Steps
• Alternatives Analysis
• Next SAG Meeting
MassDOT
Schedule and SAG Meetings
TASK MEETING DATE 1. Study Area September 2011
2. Existing Conditions & December 2011 Issues EvaluationIssues Evaluation
3. Future Conditions & February 2012 AlternativesAlternatives
Development
June 20124.
Alternatives Analyysis September 2012
5. Recommendations
December 2012
6. Fi an l Repoeport
MassDOT
Discussion
MassDOT