INTRODUCTION - PURPOSE Develop Conceptual Plan to Relieve Traffic - PowerPoint PPT Presentation

INTRODUCTION - PURPOSE Develop Conceptual Plan to Relieve Traffic Congestion Improve Effectiveness of Freight Movement

STUDY BOUNDARIES

STUDY OVERVIEW MAJOR TASKS Data Collection Capacity Analysis Develop Conceptual Alternatives

EXISTING CONDITIONS NW 12 TH STREET Urban Minor Arterial Industrial/Commercial Access to HEFT and to SR 836 / Dolphin Expressway Posted Speed 40 mph

EXISTING CONDITIONS NW 25 TH STREET County Road Urban Collector Urban Minor Arterial Industrial/Commercial Access to SR 826 / Palmetto Expressway Posted Speed 40 mph east of NW 79 th Ave. 35 mph west of NW 79 th Ave.

EXISTING CONDITIONS NW 36 TH STREET / 41 st STREET County Road ‐ Urban Other Principal Arterial Commercial / Office – North Side Industrial / Commercial / Office / Residential – South Side Interchanges at SR 821 HEFT & SR 826 / Palmetto Expressway Posted Speed 40 mph

EXISTING CONDITIONS NW 117 TH AVENUE County Local Road parallel to SR821 /HEFT Adjacent to Canal on an Industrial / Commercial / Office zone Connected to NW 25 th St. via Un ‐ signalized intersection | Dead end at NW 41 st St. Posted Speed 40 mph

EXISTING CONDITIONS Deficient Level of Service

EXISTING CONDITIONS EXISTING OPERATIONAL CONDITIONS (OC) High congestion – NW 36 th Street Corridor Intersections next to SR826 / Palmetto – Worst OC Intersections next to SR 821 / HEFT – Better OC NW 25 th Street Corridor Acceptable level of service Excess Capacity ‐ West of NW 87 th Ave.

PROJECT NEEDS Severe Congestion due to Freight Movement Need to reduce traffic congestion at: NW 25 th Street / SR 826 Interchange NW 36 th / 41 st Street Corridor Local Roads NW 114 th Avenue NW 115 th Avenue

STUDY ALTERNATIVES 6 Conceptual Alternatives Alternatives included other planned improvements: New signal for NW 115 th Avenue at NW 41 st Street (MDC) 41 st Street Interchange Modification at HEFT (Turnpike)

STUDY ALTERNATIVES Analysis Criteria Capacity Improvements Air Quality NW 117 th Ave. Widening Noise HEFT Off ‐ Ramp Relocation Construction Bridge Construction Community Cohesion Right ‐ of ‐ Way Impact Visual & Aesthetics Toll Facility Relocation

STUDY ALTERNATIVES No cost No right of way impacts Increased Congestion Decreased Air Quality No Direct HEFT Connection

STUDY ALTERNATIVES

STUDY ALTERNATIVES

STUDY ALTERNATIVES Connecting NW 25 th Street to HEFT Medium Cost Connecting NW 25 th Street to HEFT Improved Capacity on Roadway Improved Capacity on Roadway Network Network No Impact on HEFT North Bound Maintains Community Cohesion Off ‐ Ramp Delay Savings Benefit Delay Savings Benefit Relocation of Toll Facility High Cost Impact on HEFT Right ‐ of ‐ Way High Construction Impacts on NW 117 th Avenue Additional Weaving on HEFT North Bound Off ‐ Ramp High visual and aesthetics impact

STUDY ALTERNATIVES COST ESTIMATE AND BENEFIT ‐ COST ANALYSIS Note: Annualized items for 20 ‐ year period and 4% return rate •

PREFERRED ALTERNATIVE Alternative 5A (At ‐ grade) has been selected as “Preferred Alternative” Delay Savings Lower Cost Higher Benefit ‐ cost Ratio

RECOMMENDATIONS The Alternative 5A (At ‐ grade) is recommended to be included in the Florida Turnpike Enterprise Design Concept Report for HEFT/NW 41 st Street Interchange or in a separate PD&E study. A more detailed capacity analysis is recommended to be included in the Design Concept Report and/or PD&E process. Additional intersection capacity improvements along NW 41 st Street

ADDITIONAL RECOMMENDATIONS Signal Timing/Phasing Improvements 3 5 2 4 6 7

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