Location: Hillsborough County, Florida

Client: Florida Department of Transportation (FDOT), District Seven​

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​Project Overview​

D Squared Infrastructure is providing comprehensive traffic engineering design services for the Overpass Road corridor from Boyette Road to US 301 in Hillsborough County. The project supports planned roadway and intersection improvements along a growing east–west corridor and focuses on enhancing safety, operations, and multimodal functionality through upgraded traffic control, signing, pavement markings, signalization, and lighting systems.

The work includes detailed analysis and design to support phased project development, ensuring compliance with FDOT standards while coordinating across multiple design disciplines to deliver a cohesive and constructible set of plans.

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Key Services

D2i is developing the signing and pavement marking, signalization, roadway lighting, and ITS components of the project from engineering analysis through final plan production. Signing and pavement marking efforts incorporate traffic data analysis, field reviews, sign support calculations, and detailed design development to establish signing layouts, pavement markings, quantities, cross sections, and construction cost estimates. Signalization design builds on traffic data and signal warrant evaluations to develop system timings, intersection layouts, overhead street name signing, guide sign information, and mast arm and monotube requirements, along with the supporting quantities and estimates necessary for final design.

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Roadway lighting services include photometric and electrical analysis, voltage drop calculations, pole and service point development, lighting quantities, and preparation of the technical provisions and plan details needed to implement the corridor lighting system. For ITS, D2i is developing the communications and device infrastructure through system layouts, communication plans and diagrams, fiber optic splice diagrams, CCTV mounting details, cabinet wiring, route marker details, device summaries, and other project-specific details. Across each discipline, the team is also responsible for coordinated design files, temporary traffic control elements, cost estimating, plan documentation, and QA/QC to produce an integrated set of construction plans.

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Expertise:

Signing and Pavement Marking| Signalization| Roadway Lighting| Intelligent Transportation Systems (ITS)| Traffic Analysis | Temporary Traffic Control| Cost Estimating | QA/QC​