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SIMCO provides transportation planning services on many high visibility projects in the New York metropolitan region and offers a full range of planning services from field studies to analyses and modeling. SIMCO’s deliverables include stand-alone technical reports and/or environmental review document input.


The New York City Department of Transportation (NYCDOT) Division of East River Bridges rehabilitated structural components on the Manhattan Bridge. SIMCO prepared a detailed traffic impact study to assess the effects of the Maintenance and Protection of Traffic Plans (MPT) on traffic and pedestrian operations for the Manhattan Bridge and connecting access roadways affected by the various stages of construction

SIMCO oversaw the collection of turning movement counts at 20 intersections, automatic traffic recorder counts, vehicle classification and occupancy counts, and field inventories and observations at critical intersections. Balanced traffic flow maps were created and HCS+ level of services analysis was conducted at 20 intersections. Mitigation measures were prepared and analyzed where impacts were identified. Capacity analyses for the bridge roadway were conducted using VISSIM and calibrated using travel speed run data. SIMCO prepared a report and presentation documenting the results of the study.

The services provided for this project included the following:

  • Field Traffic Data Collection
  • Field Inventories
  • Field Observations
  • VISSIM Capacity Modeling
  • Development of Mitigation Measures
  • Signal Design
  • Preparation of Final Report and Presentation

At over 300 acres and $2 billion in revenue generated, the Hunts Point Food Distribution Center, located in the Hunts Point Peninsula section of the Bronx, is the largest in the world. However, it lacks direct access to the adjacent Bruckner Expressway (I-278). The purpose of this project was to determine the feasibility and effect of providing connecting ramps between Bruckner Expressway and the Hunts Point Peninsula. This study was built upon the existing information from previous studies including the Bruckner/Sheridan Interchange EIS, Bruckner Viaduct Rehabilitation Project, Arthur Sheridan Enhancement Project, and the NYCDOT TIGER II study.

SIMCO developed balanced existing traffic volume networks for 85 intersections during nine time periods using traffic count data. SIMCO also developed balanced future No Action condition volumes for these time periods out to 2025, 2035, and 2055. The balanced future Build condition volumes for 2025, 2035, and 2055 were developed using AIMSUM model output that considered the proposed changes in the traffic network and new ramp connections.

SIMCO conducted existing and future conditions intersection capacity analyses using Synchro for the study intersections during four peak time periods. Mitigation measures were developed for impacted intersections including signal timing and progression along both the local and express Bruckner Boulevard corridor roadways for the Design Report and EIS and as inputs for air quality and noise analyses. Travel time runs were recorded along key routes through the study area for calibrating the AIMSUM model. Highway, crash, and parking analyses were also conducted as part of the study.

New York City Transit’s (NYCT) Line Structures group was tasked to perform structural rehabilitation and repairs along 1.1 miles of the 4th Avenue Line in Brooklyn from 40th Street to 58th Street. The structural rehabilitation and repairs were conducted in three work zones (six blocks at a time) over the course of 12 months.

SIMCO developed MPT Plans for the 4th Avenue corridor affected by construction to address traffic, pedestrian, and parking operations during the various stages of construction. The proposed MPT schematic plans were presented to the NYCT Office of Government and Community Relations and NYCDOT’s Office of Construction Mitigation and Coordination (OCMC) through Program Coordination.

In addition, a detailed traffic impact study was performed during five time periods to assess the effects of the MPT scheme on traffic operations in the 4th Avenue corridor and whether mitigation measures would be required. The intersection capacity and level of service analysis was performed for 20 intersections using Synchro software in accordance with the Highway Capacity Manual.

SIMCO continues to provide technical support for analysis of staged Maintenance of Traffic on this facility.

Simtraffic simulation was performed to estimate queue lengths for each intersection and time period during construction. Based on the results, mitigation measures were developed during the construction conditions, including elminating left turns from 4th Avenue within each work zone, signal timing optimization, and providing protected left turn phasing outside of the work zone.

With the implementation of the proposed mitigation measures, the affected movements within the work zones were projected to operate at an acceptable LOS and the left-turn bays provided during construction would accommodate the projected queues at these intersections.

The project was initiated to address the critical commuter parking shortfall along Metro-North’s Upper Harlem Line. Specifically, this has led to the dangerous practice of parking haphazardly along the shoulders and green space along local streets in the vicinity of the Croton Falls and Purdy’s Stations.

SIMCO prepared a comprehensive study to evaluate the traffic and parking effects of a new two-stage 700+ space commuter parking facility proposed near Croton Falls including the elimination of on-street parking at both stations. The study included intersection Level of Service analyses, a detailed parking survey, including inventory, space utilization, and license plate O-D survey, and crash analysis.

The project also included the development of conceptual designs for three alternative site configurations including parking space layout, ingress and egress, and pedestrian treatments to connect the existing train station to the proposed lot and maximize commuter parking in an efficient and safe manner.

SIMCO’s role, as Prime consultant to Metro-North under its 2015-2019 General Engineering Consultant (GEC) program, included:

  • Project management
  • Coordination with all stakeholders
  • Identification of key issues
  • Comprehensive traffic survey
  • Detailed parking study
  • Alternative parking layouts and analysis
  • Site access and interface with the local street system
  • Interior parking circulation analysis
  • Identification and allocation of accessible, permit, and daily parking spaces
  • Intermodal (shuttle bus) staging area
  • Customer amenities (e.g., shelter, sidewalks, crosswalks, pay station devices, etc.)

A NEPA Environmental Impact Statement (EIS) was prepared for both the construction of a new Hudson River rail tunnel and the rehabilitation of the existing North River Tunnel.

SIMCO was responsible for overseeing the traffic and pedestrian analysis of conditions during the construction and rehabilitation of the tunnels. Traffic analyses were conducted on both the New York and New Jersey sides of the tunnel for the various peak hours and construction scenarios using Synchro software. Mitigation measures were devised to address identified traffic and pedestrian impacts. Pedestrian analyses of critical sidewalks, crosswalks, and corners were conducted to assess construction conditions. All analyses conducted in New York were in accordance with the CEQR Technical Manual standards.

SIMCO’s tasks on the project included:

  • Documentation of existing conditions
  • Generation of construction increments for trucks and workers based on project documents and census data
  • Synchro traffic analysis for intersections in New York and New Jersey
  • Pedestrian analysis of construction condition in New York
  • Crash analysis and safety assessment for New York and New Jersey study areas
  • Development of the Transportation Chapter for the EIS in accordance with NEPA standards

The Village of Island Park, New York sought to reestablish economic and social vitality within the downtown corridor along Long Beach Road following damage from Superstorm Sandy.

SIMCO led the transportation tasks on this multi-disciplinary project, focusing on the areas of traffic circulation, parking, pedestrian flow, and transit along Long Beach Road and in the vicinity of the Island Park Long Island Rail Road station.

The project included data collection and observations to establish baseline conditions. In collaboration with stakeholders, SIMCO assisted with the development of streetscape and traffic calming concepts, including mid-block crosswalks, bulb outs, and diagonal parking, access to the train station, wayfinding, and roadway geometric improvements. The project required coordination with Nassau County DPW and the LIRR.

SIMCO’s tasks on the project included:

  • Detailed parking survey and utilization study
  • Documentation of existing conditions
  • Inventory of pedestrian facilities
  • Pedestrian flow and station access observations
  • Conceptual design of streetscape
  • Conceptual design of pedestrian facilities