Project Development and Environmental Process for the Dunedin Causeway Bridges Project

Project Schedule

Milestone Date
PD&E Study Begins December 2014
Data Collection December 2014 – March 2015
Public Kick-Off Open House March 2015
Alternatives Development & Analysis April 2015 – February 2016
Public Alternatives Workshop March 2016
Recommended Alternatives Selection August 2018
Public Hearing March 2020
PD&E Study Approval August 2020
Planned Design Start** Fiscal Year 2023
Planned Construction Start** Fiscal Year 2025

** Currently not funded
Project schedule last updated October 2020

The National Environmental Policy Act of 1969 (NEPA) requires all projects receiving federal funding to evaluate and consider alternatives that minimize adverse impacts to the natural and physical environment and to the community. The Federal Highway Administration describes the NEPA process as “an approach to balanced transportation decision-making that takes into account the potential impacts on the human and natural environment and the public’s need for safe and efficient transportation.”

Adequate opportunity for the community to comment and provide input during the study process is required. The Project Development and Environment (PD&E) process assures that NEPA requirements are met and that design and/or construction of the project will be eligible for federal funds, if available.

PD&E Study

The study evaluated possible impacts to the following:

  • Wetlands                                
  • Wildlife
  • Water quality
  • Historic and archeological sites
  • Recreation areas
  • Noise sensitive sites
  • Air quality
  • Hazardous materials

Additional issues that were evaluated and considered include:

  • Community impacts
  • Impacts to traffic on local roads during construction
  • Bicycle and pedestrian facilities and safety
  • Project costs
  • Motorist safety
  • Impacts to navigation
  • Aesthetics/landscaping


Input from the community is an important factor in the decision-making process. The study included many opportunities for public involvement and input.

The key steps in the process include:

  • Collect and analyze data.
  • Develop and evaluate alternatives.
  • Present alternatives to the community and request input.
  • Select a recommended alternative.
  • Document the study process in reports.
  • Present recommended alternative to the community.
  • Obtain approval from the Federal Highway Administration.

Questions and comments can be submitted by visiting the Contact Us page.