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TRAFFIC ENGINEERING

SERVICE OVERVIEW

SIMCO’s traffic engineering expertise includes, highway safety investigations, traffic signal design, pavement markings and signing. SIMCO has extensive experience in maintenance and protection of traffic/work zone traffic control design and peer review for public agencies and contractors.

FEATURED PROJECTS

Kosciuszko Bridge Replacement Project consists of two separate phases to replace the current span which are comprised of two separate bridges, an eastbound structure and a westbound structure. Phase I consisted of the construction of the eastbound main span and approach structures adjacent to the existing structure, and the reconstruction of the connector roadways.

The new eastbound main span and reconstruction of the connector roadways, and opening of two way traffic along the eastbound main span, are now complete

Phase II, expected to be completed under a different contract, and would consist of the construction of the westbound main span.

SIMCO provided the Traffic Engineering support for the project during Phase 1 of construction. The scope included collecting and recording complete inventories of existing project area traffic signals, lighting and signing, reviewing, designing and obtaining approval for the proposed modifications to the Detour Plans.

Additionally, SIMCO designed all temporary and permanent traffic signals as well as the Brooklyn- Queens Expressway (BQE) and local street lighting impacted by construction. Furthermore, SIMCO prepared pavement marking and signing design along BQE and the local streets.

Lastly, it should be noted that the Kosciuszko Bridge Replacement Project is a Design/Build project contract.

SIMCO’s scope of work on these 2 contracts included the design and coordination for the preparation of detailed Maintenance and Protection of Traffic (MPT) plans in support of structural bridge repairs at over seventy (70) locations in three (3) Boroughs. These repairs addressed critical bridge deficiencies and “red flags” discovered during routine bridge inspections.

In addition to local streets, projects were located along the Van Wyck Expressway (I-678), Long Island Expressway (I-495), Gowanus Expressway (I-278), Belt Parkway, Clear view Expressway (I-295), Grand Central Parkway, Cross Island Parkway, and Jackie Robinson Parkway.

The work zone traffic control/MPT design involved temporary and long term lane closures to address construction staging. Traffic operations impacts during construction were assessed to maximize safety and operations and minimize inconvenience to the public. In addition to typical traffic control devices layout, measures were implemented for complex ramp/intersection alignments, traffic detours and ramp closures

SIMCO also provided coordination with NYSDOT, NYCDOT OCMC and other stakeholders. All plans were prepared in accordance with the MUTCD and NYSDOT/NYCDOT supplements.

SIMCO, as a subconsultant, provided traffic engineering services from concept through final design to improve traffic conditions along a stretch of Route 303, including the signalized intersection of Erie Street and Route 303, in Orangetown, Rockland County, NY. SIMCO provided the initial design services to evaluate various intersection configurations, and methods to link the signalized intersection with an adjacent at-grade rail crossing to minimize backup onto the State Highway.

Traffic Control Plans - SIMCO prepared long-term traffic control plans to facilitate the full-depth reconstruction of the shoulder, and roadway widening. The plan was coordinated with the overall construction scheme to ensure safe drainage throughout the project, and ideal project progression through the phases. SIMCO provided input on ideal schemes to minimize exposed slopes as per the AASHTO Roadside Design Guide.

Striping and Sign Location Plans – SIMCO prepared striping and sign location plans in accordance with the Manual on Uniform Traffic Control Devices, and current NYSDOT practices.

Traffic Signal Plans – SIMCO prepared traffic signal plans to reconstruct an existing span wire signal as a steel pole / mast arm signal in support of the new intersection configuration. SIMCO designed in-roadway vehicle detection layout and conduit wiring details. SIMCO designed the future interconnection with the adjacent rail crossing into the traffic signal. The plans were prepared in accordance with the Manual on Uniform Traffic Control Devices.

Broadway Junction is the transportation hub for the East New York neighborhood in Brooklyn. The location is served by the MTA New York City Transit (NYCT) A, C, J, L, and Z subway lines, and the B20, B25, B83, Q24, and Q56 bus routes, as well as by other nearby bus routes.

Approximately 8,500 passengers board the subway daily from this location, over 2,700 of which transfer from one of the bus routes. Over, 2,900 additional passengers transfer from one bus route to another at this location.

From this point, the bus routes fan out in multiple directions to serve areas of the neighborhood that are not easily accessible by foot from the subway system. Additionally, the East New York station of the Long Island Railroad (LIRR) is within the project area, approximately two blocks from the transportation hub. A large park (Callahan-Kelly Park) is also in the vicinity.

As part of an ESA contract with the New York City Department of Transportation, this project consisted of the rehabilitation and improvement of the roadway and intermodal facility of this vital Brooklyn area transportation center.

The goal was to improve the flow of vehicular and pedestrian traffic at this major rail and bus hub

SIMCO’s role in the design effort was to create work zone traffic control plans and staging plans. Tasks included developing the staging and maintenance and protection plans while maintaining current pedestrian, bus, and vehicular traffic. ADA, NYCDDC and MUTCD Standards were followed to create the traffic and staging plans. Cost estimating was also performed.

Broadway Junction is the transportation hub for the East New York neighborhood in Brooklyn. The location is served by the MTA New York City Transit (NYCT) A, C, J, L, and Z subway lines, and the B20, B25, B83, Q24, and Q56 bus routes, as well as by other nearby bus routes.

Approximately 8,500 passengers board the subway daily from this location, over 2,700 of which transfer from one of the bus routes. Over, 2,900 additional passengers transfer from one bus route to another at this location.

From this point, the bus routes fan out in multiple directions to serve areas of the neighborhood that are not easily accessible by foot from the subway system. Additionally, the East New York station of the Long Island Railroad (LIRR) is within the project area, approximately two blocks from the transportation hub. A large park (Callahan-Kelly Park) is also in the vicinity.

As part of an ESA contract with the New York City Department of Transportation, this project consisted of the rehabilitation and improvement of the roadway and intermodal facility of this vital Brooklyn area transportation center.

The goal was to improve the flow of vehicular and pedestrian traffic at this major rail and bus hub

SIMCO’s role in the design effort was to create work zone traffic control plans and staging plans. Tasks included developing the staging and maintenance and protection plans while maintaining current pedestrian, bus, and vehicular traffic. ADA, NYCDDC and MUTCD Standards were followed to create the traffic and staging plans. Cost estimating was also performed.