Planning Projects

I-75 N. Master Plan

Client: FDOT District 2

Location: Alachua, Columbia, Hamilton, and Suwannee County, FL

The North I-75 Master Plan was conducted at the request of the I-75 Relief Task Force and was tasked with evaluating capacity and connectivity enhancement to I-75 and three parallel corridors: US 441, US 41, and US 301. The study limits began at the I-75/Florida’s Turnpike Interchange in Sumter County and ended at the I-75/I-10 Interchange in Columbia County.

Osiris 9 Consulting was tasked with traffic analysis, public involvement, and cost estimating, as well as quantifying the impacts of widening the four corridors to the natural, social, physical, and cultural environment. Given the high-level nature of the study, impacts to the environment were quantified using Geographic Information Systems (GIS).

Over 200 different GIS layers were analyzed to develop a comprehensive picture of impacts. An extensive Public Involvement Plan was implemented to obtain feedback from stakeholders, and several public meetings were held in different locations to obtain public input.

Wekiva Parkway

Client: FDOT District 5

Location: Seminole County, FL

Our team was responsible for developing traffic projections and preparing operation and safety analyses for the Wekiva Parkway (SR 429)/Interstate 4 (I-4) interchange within the City of Sanford. The Wekiva Parkway (SR 429) project is a proposed 4-lane divided limited access toll facility that will connect to SR 417 at I-4, completing the Western Beltway (SR 429) around the Orlando metropolitan area.

Osiris 9 developed traffic projections using the Central Florida Regional Planning Model and demonstrated that the Alternative Technical Concept performed better than or equal to the Request for Proposal concept.

The analysis was documented in an Interchange Modification Report and satisfied the Federal Highway Administration (FHWA) policy points. The project was approved by Florida Department of Transportation (FDOT) District 5, FDOT Central Office, and FHWA in July 2020.

Sebastian Inlet

Client: FDOT District 4

Location: Indian River County, FL

Our team was tasked with determining the vertical clearance of the proposed Sebastian Inlet Bridge. This bridge, also known as the James H. Pruitt Memorial Bridge, connects SR A1A in Brevard County to Indian River County. Osiris 9 reviewed the bridge plans, coordinated with the U.S. Coast Guard, and conducted a Bridge Navigation Survey to document the type and height of the vessels passing underneath the Sebastian Inlet Bridge.

Project Development Projects

SR 78 PD&E Study

Client: FDOT District 1

Location: Lee County, FL

Our team was responsible for performing a PD&E study to evaluate the widening of SR 78 (at I-75 to SR 31) from two to four lanes. Other improvements included drainage, bridge widening, access management, traffic operations, safety, and the addition of a shared use path.

Osiris 9 Consulting developed conceptual widening alternatives, drainage improvements, an access management plan, and intersection improvements as well as writing the Preliminary Engineering Report, Project Traffic Analysis Report and Type 2 Categorical Exclusion.

SW 62nd PD&E Study

Client: FDOT District 2

Location: Alachua County, FL

Our team completed this PD&E study for SW 62nd St, a proposed new two-lane roadway connecting SW 43rd Street/Clark Butler Boulevard to SW 52nd Street near Interstate 75. Once completed, the project will provide an additional north-south roadway between two existing major east-west arterials: SW Archer Road (SR 24) and SW 20th Avenue.

Osiris 9 Consulting completed the Project Development and Environment Study including writing the Preliminary Engineering Report, Categorical Exclusion Type 2 Document, and holding the Public Hearing. There were no major issues during the Public Hearing and the project was approved by Office of Environmental Management in July 2018.

US 17 PD&E Study

Client: FDOT District 2

Location: Nassau County, FL

Our team conducted an Intersection Control Evaluation for the stop-controlled intersection of US 17 at William Burgess Boulevard. Proposed intersection alternatives which were evaluated included a typical signalized intersection, a partial Median U-Turn (MUT), and a hybrid Quadrant/MUT intersection.

The evaluation for each alternative included delay, safety benefits, construction and right-of-way costs, and benefit-cost ratio. Osiris 9 completed Stage 1 and Stage 2 of the ICE process and the analysis was approved by FDOT in November 2020.

Design Projects

First Coast Expressway

Client: FDOT District 2

Location: Clay, Duval and St. Johns County, FL

Unique fact: This “fast track” project is composed of 46.5 miles of mostly new alignment with 13 new interchanges and over 120 stormwater treatment facilities.

Our team was responsible for managing the SJRWMD and USACE permitting of 46.5 miles of proposed limited access toll facility that includes the St. Johns River Crossing Corridor and the Branan Field-Chaffee Road (SR-23) project. The project was permitted for expansion to an eight-lane interstate facility that will also meet the new state stormwater criteria (draft March 2008) for nitrogen and phosphorus pollutant removal.

In addition to stormwater management our staff were the Engineer of Record for the Phase 2 North segment which included a four-lane rural limited access facility from Black Creek to Old Jennings Road. Engineering responsibilities included horizontal and vertical roadway design in 3D, MOT and utility adjustments.

Marietta at I-10 Interchange

Client: FDOT District 2

Location: Duval County, FL

Unique fact: This project was the first FDOT project in District 2 to obtain a permit utilizing new Florida laws for treating offsite runoff within right-of-way for transportation projects.

Our team was responsible for the drainage design and permitting of the new diamond interchange along I-10 just west of I-295. Our innovative drainage design removed over 5000’ of drainage pipe and dozens of structures. Much of the costs savings resulted from applying HB 599, which allows offsite co-mingling within treatment systems, and from performing a detailed nutrient removal analysis to substantiate our design to the SJRWMD.

Ultimately, these improvements saved over $2 million, months of construction time, and future maintenance costs for the FDOT and City of Jacksonville.

SR 21 Widening

Client: FDOT District 2

Location: Clay County, FL

Unique Fact: The project scope originally included support services to FDOT “In House” design staff, but due to FDOT staffing needs, our team completed final plans for the entire project.

Our staff served as the Project Manager and Engineer of Record for the roadway and permitting of SR 21 from the Black Creek Bridge to Allie Murray Road from a 4-lane rural to 6-lane urban arterial roadway. Our design responsibilities included roadway design, horizontal and vertical geometry, MOT, Drainage Collection System, Pond Siting, Stormwater Treatment Facilities, USACOE & SJRWMD Permitting, Intelligent Transportation Systems, Lighting, and Quality Control.