NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Project Location

LONG ISLAND EXPRESSWAY

NICOLLS ROAD MacArthur Airport

VETERANS TOWN OF ISLIP

OAKDALE-BOHEMIA RD SUFFOLK COUNTY State Park Preserve

NORTH Oakdale Merge Planning and Feasibility Study BOHEMIA

SAGTIKOS PKWY GREAT PRIMARY Project Location RIVER STUDY LOCATION 27) SUNRISE HIGHWAY (NY

Secondary Study Area GREAT RIVER OAKDALE NY 27 SUNRISE HIGHWAY

Heckscher Nicoll Bay State Park Note: “Oakdale Merge”

Great South Bay Merge area of NY 27 and NY27A (Sunrise Hwy & Montauk Hwy) Basemap Source: Google Maps

November 28, 2018 1 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Primary Study Area

Primary Study Area

CONNETQUOT AVE Existing Limits Without Continuous Service Roads BOHEMIA NORTH CONNETQUOT RIVER STATE PARK PRESERVE GREAT

Oakdale MergeRIVER Planning and FeasibilityMain Study Pond 48 Project Location West East Pond Lower 46 Pond Pond 47A WHEELER RD H 46A 47 E SUNRISE HWY C K S C OAKDALE H E LIRR R MONTAUK HWY S GREAT OAKDALE-BOHEMIA RD T A T MONTAUK HWY E RIVER P K Bayard W Cutting Y Cutting Aboretum Legend

46 Exit Number November 28, 2018 2 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Project Purpose • Identify, evaluate, and document existing conditions and deficiencies along the NY 27 / Sunrise Highway corridor.

• Identify feasible concepts that can be incorporated into Oakdale Merge Planning and Feasibility Study Projecta scoping Location document and advanced into the design stage.

• Obtain input from stakeholders.

November 28, 2018 3 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Project Goals & Objectives

GOALS OBJECTIVES □□Improve roadway capacity and reduce congestion and delays □□Reduce accidents and improve safety Improve Traffic Operations □□Improve geometric deficiencies □□Improve corridor resiliency □□Explore opportunities to improve and enhance adjacent Oakdale Merge Planning andwetlands, Feasibility waterbodies, Study parklands, and shared use paths Project Location □□Explore opportunities to reduce visual impacts Minimize Environmental Impacts □□Minimize potential impacts to air quality and noise levels □□Minimize potential right-of-way (ROW) acquisition □□Minimize construction disturbance to adjacent communities and the traveling public

□□Investigate cost-effective opportunities to reduce capital costs Develop Cost-Effective Transportation Solutions □□Investigate cost-effective opportunities to reduce operations and maintenance costs

November 28, 2018 4 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Historical Background

• The 1987 Environmental Assessment presented an Interim project to provide relief of traffic congestion.

• OakdaleThe Interim Merge work Planning separated and Feasibility Sunrise Study Highway from ProjectMontauk Location Highway with traffic diversions to local roads.

• An Ultimate improvement plan was presented in various documents and had a 6 lane mainline with two-2 lane service roads and grade separations to rejoin Sunrise and Montauk Highways.

November 28, 2018 5 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Photos of Site Features

1. NY 27 at Connetquot Ave (looking east) 2. WB NY 27 at Water Authority Access 3. WB NY 27 at Bike Path Bridge at West Pond 4. WB NY 27 at Connetquot State Park Preserve Access 5. NY 27 at Oakdale-Bohemia Road (looking west)

BAYARD CUTTING CONNETQUOT RIVER STATE PARK PRESERVE D R NORTH ARBORETUM D CONNETQUOT AVE K N O O 5 (NYS PROPERTY) O P 297 GREAT WE R 299 S B OK BOHEMIA T E RO B L E B R D AK RIVER O N D S 300 I E O MAIN TL

M 325 K AT POND R

Oakdale MergeSWCA Planning and Feasibility Study

PROVIDENCE 7 GREENVIEW APARTMENTS LOWER EAST POND 47A COMMONS Project Location 2 3 POND 46 4 SCWA 9 RCB HARLEY 12 47 6 RCB 8 10 RED TOYOTA DAVIDSON ST JOSEPH'S MAPLE OAKDALE-BOHEMIA 46A SWAMP MIDDLE SCHOOL 1 COLLEGE 13 WHEELER RD WEST SUNRISE SOCCER BUSINESS FIELDS POND B'NAI ISRAEL CENTER REFORM TEMPLE

OAKDALE-BOHEMIALEGEND: ROAD WESTBROOK VILLAGE AY 325 Recharge Basin GHW HI UK TA 8 Photo Location GREAT RIVER N O CONNETQUOT RIVER OAKDALE M BAYARD CUTTING 47 BASEBALL FIELDS Exit Number ARBORETUM

6. EB NY 27 / Service Road Merge at Wheeler Rd 7. West Pond Culvert & Greenbelt Trail 8. Fishing at “Bubbles Falls” / Trout Pond 9. EB NY 27 at Exit 47 to South Service Rd 10. (NY 27A / CR85) Next to NY 27

November 28, 2018 6 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Aerial Views of Project Area

N S Wheeler Rd East Pond R West Connetquot River West Pond Pond State Park Preserve Main Pond Trout Montauk Hwy Park Lower Pond Pond Access Park Trout Connetquot River Access Montauk Hwy Bike Path Fishery Pond Lower Pond State Park Preserve

L Bike Path I

R Main Pond R West Pond West Pond

West Pond Park West Pond Bike Path Connetquot River Bayard Cutting Access Oakdale Merge PlanningState Park Preserve and FeasibilityArboretum StateStudy Park S S SCWA Access R Sunrise P Project Locationond Rd Business Wheeler Rd Providence Center

Apartments Bike Path N S S R S R Bike Path

Wheeler Rd Greenview Providence Sunrise SS N Commons R SR Apartments Business Center

Oakdale-Bohemia Rd Connetquot Ave N S S S R R LOOKING EAST LOOKING WEST November 28, 2018 7 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Existing Problem Areas

EB CAPACITY REDUCTION (5 LANES TO 3 LANES)

CONNETQUOT POND RD AVE SMITHTOWN

WB CAPACITY REDUCTION AVE LOCUST STATE PARK (5 LANES TO 3 LANES)

WHEELER RD NY 27 WB MAINLINE HE NY 27 EB SERVICE RD OAKDALE CONGESTION C CONGESTION QUEUE (APPROX 1.5 MILES) KS OFFICES CARLETON AVE (APPROX 0.5 MILES) CONNETQUOT AVE MERGE NY 27 EB MAINLINE C & BUSINESSES CONGESTION QUEUE HE (APPROX 1.2 MILES) R ST

HECKSHER STATE PARKWAY A T CONNECTS TO NY 27 SERVICE E ROADS (NO DIRECT MAINLINE P K

CONNECTION) WY OAKDALE-BOHEMIA RD Oakdale Merge Planning and Feasibility Study Access Project Location

Access

Congestion / Queuing Poor Merge, Diverge and Access • Corridor capacity decrease due to lane reduction from 5 to 3 lanes. • Constricted roadway due to abutting park, wetlands, waterways/ponds, and bike paths. • Congestion/queues on NY 27 entering the Oakdale Merge during peak periods. Outside Merge Within Merge • Direct driveway access connection with NY 27 Mainline. w/ Service Roads w/o Service Roads • Poor service road merge and diverge conditions. Existing NY 27 Corridor Directional Capacity • Lack of suitable alternate bypass routes. Outside and Within the Oakdale Merge November 28, 2018 8 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Concept Summary • NO-BUILD / DO NOTHING CONCEPT

• AT-GRADE CONCEPTS

Oakdale Merge Planning and Feasibility Study Project Location • VIADUCT & BRIDGE CONCEPTS

• POSSIBLE IMPROVEMENTS APPLICABLE TO ALL CONCEPTS

November 28, 2018 9 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge At-Grade Concepts (A-1 to A-6)

Approx. Limits of At-Grade Concepts

CONNETQUOT AVE Limits Without Continuous Service Roads BOHEMIA NORTH A POND RD GREAT A CONNETQUOT RIVER STATE PARK PRESERVE 48 Main RIVER Pond

46 Lower East Pond Oakdale Merge Planning andPond Feasibility Study 47A 46A WHEELER RD 47 Project Location West Pond LIRR

MONTAUK HWY OAKDALE-BOHEMIA RD GREAT MONTAUK HWY Bayard RIVER Cutting Aboretum OAKDALE

• At-grade concepts are at the existing highway level. • Concepts add capacity to the 6 lane Oakdale Merge area by use of reversible lanes or added lanes. • Concepts vary in: added lanes (0, 1, 2, or 4); shoulder widths; and, with or without Service Roads. • Impacts to park and wetland areas will vary depending on the concept. November 28, 2018 10 NY 27 At Grade Concepts Section A-A: Oakdale Merge Sunrise Highway (NY 27) at West Pond

Wetlands Exist. NY 27 Wetlands Park Bike Path WB 27 EB 27 No Build

West Pond Culvert West Pond No Lane Increase

Existing Conditions, 3WB-3EB Lanes

Wetlands Exist. NY 27 Wetlands Park Bike REV WB 27 Path EB 27 A-1 4WB-4EB Lanes with Full Shoulders No Lane Increase West Pond Culvert West Pond Reversible Lane 4WB-2EB, 2WB-4EB, or 3WB-3EB Lanes with Movable Barrier / Reversible Lanes

Wetlands Wetlands Exist. NY 27 Park Bike REV Widen Path WB 27 EB 27 10'-15' A-2

West Pond Culvert West Pond +1 Lane/ Reversible Lane 4WB-3EB or 3WB-4EB Lanes with or w/o Movable Barrier / Reversible Lane 4WB-4EB Lanes with Narrow Shoulders November 28, 2018 11 At Grade Concepts Section A-A: NY 27 At Grade Concepts Section A-A: Sunrise Highway (NY 27) at West Pond Oakdale Merge Sunrise Highway (NY 27) at West Pond

Wetlands Exist. NY 27 Wetlands Park Bike Widen Path 40'-50' WB 27 EB 27 A-3

West Pond Culvert West Pond +2 Lanes

4WB-4EB Lanes with Full Shoulders 3WB-3EB with Two–2 Lanes Service Roads Narrow Shoulders

Wetlands Exist. NY 27 Wetlands

Park Bike Widen Path 20'-30' WB 27 EB 27 A-4 +2 Lanes

West Pond Culvert West Pond

4WB-4EB Lanes with Narrow Shoulders 5WB-5EB Lanes with Narrow (or Full) Shoulders November 28, 2018 12 At Grade Concepts Section A-A: NY 27 At Grade Concepts Section A-A: Sunrise Highway (NY 27) at West Pond Oakdale Merge Sunrise Highway (NY 27) at West Pond

Widen 5' Exist. NY 27 Wetlands Wetlands Widen Park Bike 50'-60' Path WB 27 Svc Rd WB 27 EB 27 EB 27 Svc Rd A-5

West Pond Culvert West Pond +4 Lanes

3WB-3EB with Two–2 Lanes Service Roads Narrow Shoulders

Widen 5' Wetlands Exist. NY 27 Wetlands Widen Park Bike 35'-45' Path WB 27 EB 27 A-6 +4 Lanes

West Pond Culvert West Pond

5WB-5EB Lanes with Narrow (or Full) Shoulders

November 28, 2018 13 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Viaduct & Bridge Concepts (V-1 to V-4, & B-1)

Approx. Limits of Viaduct & Bridge Concepts

CONNETQUOT AVE Limits Without Continuous Service Roads BOHEMIA NORTH A POND RD GREAT A CONNETQUOT RIVER STATE PARK PRESERVE 48 Main RIVER Pond

Lower East Pond Oakdale46 Merge Planning andPond Feasibility Study 47A 46A WHEELER RD 47 Project Location West Pond LIRR

MONTAUK HWY OAKDALE-BOHEMIA RD GREAT MONTAUK HWY Bayard RIVER Cutting Aboretum OAKDALE

• Viaduct concepts provide added lanes and increased capacity with an elevated roadway. • Bridge concept spans the bodies of water. • Concepts vary in: added lanes (2 or 4); shoulder widths; and, configuration. • Impacts to park and wetland areas will vary depending on the concept. November 28, 2018 14 NY 27 Viaduct & Bridge Concepts Section A-A: Oakdale Merge Sunrise Highway (NY 27) at West Pond

Wetlands Exist. NY 27 Wetlands Park Bike Path WB 27 EB 27 No Build West Pond Culvert West Pond No Lane Increase

Existing Conditions, 3WB-3EB Lanes

WB 27

Wetlands Wetlands Exist. NY 27 Park Bike Path EB 27 EB 27 V-1 +2 Lanes

West Pond Culvert West Pond

4WB over 4EB Lanes with Narrow (or Full) Shoulders

November 28, 2018 15 Viaduct & Bridge Concepts Section A-A: NY 27 Viaduct & Bridge Concepts Section A-A: Sunrise Highway (NY 27) at West Pond Oakdale Merge Sunrise Highway (NY 27) at West Pond

WB 27 EB 27

Wetlands Wetlands

Park Bike Exist. NY 27 Path WB Svc Rd EB Svc Rd V-2 +2 Lanes

West Pond Culvert West Pond

2WB-2EB over Two–2 Lane Service Roads with Narrow (or Full) Shoulders

WB 27 EB 27

Wetlands Wetlands Exist. NY 27 Park Bike Path WB Svc Rd EB Svc Rd V-3

West Pond Culvert West Pond +4 Lanes

3WB-3EB over Two–2 Lane Service Roads with Narrow (or Full) Shoulders

November 28, 2018 16 Viaduct & Bridge Concepts Section A-A: NY 27 Viaduct & Bridge Concepts Section A-A: Sunrise Highway (NY 27) at West Pond Oakdale Merge Sunrise Highway (NY 27) at West Pond

Exist. NY 27 Express WB EB Wetlands Wetlands Widen 5' Park Bike Widen Path 10'-15' V-4 WB 27 EB 27 +2 Lanes

West Pond West Pond Culvert

2 Express Car Lanes (1WB-1EB) over 3WB-3EB Lanes

Exist. NY 27

Wetlands WB 27 EB 27 Wetlands Widen 20'-30' Park Bike Path Abutment & Pedestrian Underpass (In Background) B-1

West Pond Remove Existing Culvert / Reconnect Water Bodies West Pond +2 Lanes

Raised Bridge with 4WB-4EB Lanes with Narrow Shoulders

November 28, 2018 17 Possible Improvements to All Concepts NY 27 Resiliency Improvements – Oakdale Merge Raise Grade at One Location

WEST POND CONNETQUOT RIVER STATE PARK PRESERVE

LOWER POND ROW Raise NY 27 Oakdale Merge Planning and Feasibility Study

Project LocationROW MONTAUK HWY

Notes: • 100 Year Flood at Elev. 4.8’ • 500 Year Flood at Elev 5.2’ • Add 2-3’ for Sea Level Rising ROW LIRR • NY 27 at Elev. 4.9’ at Lower Pond • NY 27 at Elev. 15’ at West Pond

November 28, 2018 18 Possible Improvements to All Concepts NY 27 ITS – Ramp Metering & ITS Alternate Route Oakdale Merge Via NY 454, LIE, and Sagtikos Pkwy

Oakdale Merge Planning and Feasibility Study B Project Location Route(B to A) WB MIN Project Area Sunrise Hwy/NY 27 14-22 NY 454/I-495/Sag 26-50 VMS Sign

A

Route(A to B) EB MIN Basemap Source: Google Maps Sunrise Hwy/NY 27 20-35 Sag/I-495/NY 454 30-70 VMS Sign

November 28, 2018 19 NY 27 Possible Improvement to All Concepts Oakdale Merge Lengthen Ramp Accel & Decel Lanes

CONNETQUOT AVE Limits Without Continuous Service Roads BOHEMIA NORTH POND RD GREAT CONNETQUOT RIVER STATE PARK PRESERVE 48 Main RIVER Pond

46 Lower East Pond Oakdale Merge Planning andPond Feasibility Study 47A 46A WHEELER RD 47 Project Location West Pond LIRR

MONTAUK HWY OAKDALE-BOHEMIA RD GREAT MONTAUK HWY Bayard RIVER Cutting Aboretum OAKDALE

Legend Lengthen Ramp Acceleration / Deceleration Lane

November 28, 2018 20 NY 27 Possible Improvement to All Concepts Oakdale Merge Relocate Local Access – 4 Locations

CONNETQUOT AVE Limits Without Continuous Service Roads BOHEMIA NORTH POND RD GREAT CONNETQUOT RIVER STATE PARK PRESERVE 48 Main RIVER Pond 1 46 3 Lower East Pond Pond 47A 2 46A WHEELER RD 47 Oakdale Merge PlanningWest 4 and Feasibility Study Pond Project Location LIRR

MONTAUK HWY OAKDALE-BOHEMIA RD GREAT MONTAUK HWY Bayard RIVER Cutting Aboretum OAKDALE

Legend 1 Suffolk County Water Authority 3 Connetquot Park WB Access WB Driveway Access 2 Wheeler Road EB Access 4 EB Exit 46 to Montauk Hwy November 28, 2018 21 NY 27 Comparison of At-Grade Concepts Oakdale Merge Against Project Goals and Objectives

AT GRADE CONCEPTS No Build A-1 A-2 A-3 A-4 A-5 A-6 At-Grade At-Grade At-Grade At-Grade At-Grade At-Grade No Change Reversible Reversible 40'- 50' Widening 20'- 30' Widening 40'-50' Widening 40'-50' Widening Additional Lanes 0 NET 0 NET +1 LANE +2 LANES +2 LANES +4 LANES +4 LANES Single Lane 6 Lane Mainline Movable Barrier Addition 8 Lane Mainline 8 Lane Mainline 10 Lane Mainline No Change (3-3) w/ Two-2 Lane with no (4-3 Fixed, (4-4 Configuration) (4-4 Configuration) 5-5 Configuration (3-3) Service Roads and GOALS / OBJECTIVES Additional Lanes 3-4 Fixed, or Full Shoulders Narrow Shoulders Narrow Shoulders Narrow Shoulders (4-2, 2-4, 3-3) Reversible w/ Movable Barrier) IMPROVE TRAFFIC OPERATIONS Improve capacity ○ ○ ○ ● ● ReduceOakdale congestion and delays Merge Planning○ and Feasibility○ ○ Study○ ○ ● ● Reduce accidents and improve safety ○ ○ ○ ○ ○ ● ● ImproveProject geometric deficiencies Location ○ ○ ○ ○ ○ ● ● MINIMIZE ENVIRONMENTAL IMPACTS Explore opportunities to improve and enhance adjacent wetlands, waterbodies, parklands, and shared use path ○ ● ○ ○ ○ ○ ○ Minimize potential impacts to air quality and noise levels ○ ○ ○ ○ ○ ○ ○ Explore opportunities to reduce visual impacts ○ ○ ○ ○ ○ ○ ○ Minimize potential right-of-way (ROW) acquisition ● ● ● ○ ○ ○ ○ Minimize construction disturbance to adjacent communities and the traveling public ● ● ○ ○ ○ ○ ○ DEVELOP COST-EFFECTIVE TRANSPORTATION SOLUTIONS Investigate opportunities to reduce operations & maintenance costs ○ ○ ○ ○ ○ ○ ○ Investigate opportunities to reduce capital costs ○ ○ ○ ○ ○ ○ Preliminary Estimate of Construction Costs ○ $20-$40 M $40-$60 M $75-$125 M $60-$100 M $150-$225 M $150-$200 M Maintenance and Operations Costs (M&O) Plus M&O $ Plus M&O $

Legend Best Addresses Objective Moderately Addresses Objective ● ○ Note 1: Preliminary estimates were derived using 2016 Bid Price Data and are in 2018 Dollars. ROW is not included in the preliminary estimate. Note 2: Possible improvements applicable to all concepts not cited above include resiliency improvements, ramp metering and ITS improvements, Does Not Address Objective Minimally Addresses Objective ○ ○ improvements to acceleration/deceleration lanes, and relocations to existing local access points. November 28, 2018 22 NY 27 Comparison of Viaduct & Bridge Concepts Oakdale Merge Against Project Goals and Objectives

VIADUCT & BRIDGE No Build V-1 V-2 V-3 V-4 B-1 Low Bridge No Change Viaduct 70' Wide Viaduct 60' Wide Viaduct 100' Wide Viaduct 45' Wide CONCEPTS 100' Wide Additional Lanes 0 NET +2 LANES +2 LANES +4 LANES +2 LANES +2 LANES

4 Lane Mainline 6 Lane Mainline 2 Express Car No Change 8 Lane Mainline 8 Lane Mainline over Two-2 Lane over Two-2 Lane Lanes (1 WB + GOALS / OBJECTIVES (3-3) (4WB over 4EB) (4 WB + 4 EB) Service Rd (Full or Service Rd (Full or 1 EB) over 6 Full Shoulders Narrow Shoulders) Narrow Shoulders) Mainline Lanes

IMPROVE TRAFFIC OPERATIONS OakdaleImprove capacity Merge Planning and○ Feasibility○ Study○ ● ○ ○ Reduce congestion and delays ○ ○ ○ ● ○ ○ ProjectReduce accidents Location and improve safety ○ ● ○ ● ○ ○ Improve geometric deficiencies ○ ● ○ ● ○ ○ MINIMIZE ENVIRONMENTAL IMPACTS Explore opportunities to improve and enhance adjacent wetlands, waterbodies, parklands, and shared use path ○ ○ ○ ○ ○ ● Minimize potential impacts to air quality and noise levels ○ ○ ○ ○ ○ ○ Explore opportunities to reduce visual impacts ○ ○ ○ ○ ○ ○ Minimize potential right-of-way (ROW) acquisition ● ○ ○ ○ ● ○ Minimize construction disturbance to adjacent communities and the traveling public ● ○ ○ ○ ○ ○ DEVELOP COST-EFFECTIVE TRANSPORTATION SOLUTIONS Investigate opportunities to reduce operations & maintenance costs ○ ○ ○ ○ ○ ○ Investigate opportunities to reduce capital costs ○ ○ ○ ○ ○ Preliminary Estimate of Construction Costs ○ $450-$500 M $500-$550 M $650-$700 M $300-$350 M $250-$300 M Legend ● Best Addresses Objective ○ Moderately Addresses Objective Note 1: Preliminary estimates were derived using 2016 Bid Price Data and are in 2018 Dollars. ROW is not included in the preliminary estimate. Note 2: Possible improvements applicable to all concepts not cited above include resiliency improvements, ramp metering and ITS improvements, ○ Does Not Address Objective ○ Minimally Addresses Objective improvements to acceleration/deceleration lanes, and relocations to existing local access points. November 28, 2018 23 NY 27 Oakdale Merge Planning and Feasibility Study Oakdale Merge Project Location

LONG ISLAND EXPRESSWAY

NICOLLS ROAD Long Island MacArthur Airport

VETERANS HIGHWAY TOWN OF ISLIP

OAKDALE-BOHEMIA RD SUFFOLK COUNTY Connetquot River State Park Preserve

NORTH Oakdale Merge Planning and Feasibility Study BOHEMIA

SAGTIKOS PKWY GREAT PRIMARY Project Location RIVER STUDY LOCATION HECKSCHER STATE PARKWAY 27) SUNRISE HIGHWAY (NY

Secondary Study Area GREAT RIVER OAKDALE NY 27 SUNRISE HIGHWAY

Heckscher Nicoll Bay State Park Note: “Oakdale Merge”

Great South Bay Merge area of NY 27 and NY27A (Sunrise Hwy & Montauk Hwy) Basemap Source: Google Maps

November 28, 2018 24