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Dunedin Causeway Bridges Project Alternatives Evaluated

The recommended alternatives presented at the public hearing on March 11, 2020, include the replacement of the existing Main Bridge with a new, two-lane mid-level movable bridge and the replacement of the existing Tide Relief Bridge with a new, two-lane low-level fixed bridge.

The project is pending approval from the Florida Department of Transportation (FDOT) and the Federal Highway Administration (FHWA) following the consideration of all citizen comments.

Alternatives previously under review were presented at a Public Alternatives Workshop held on March 29, 2016, to obtain community input. The information derived from the workshop was then presented to the Board of County Commissioners on June 12, 2018. The Board selected the mid-level moveable bridge replacement alternative for the main bridge as the alternative to complete the study. However, changes in federal funding policies and permitting regulations required additional research and the study was extended through early 2020.

Additional Information About the Replacement Alternatives

Tide Relief Bridge

Tide Relief Bridge
  • Replacement with a new, two-lane low-level fixed bridge.
  • No new travel lanes are proposed.
  • A replacement bridge would have slightly higher vertical and larger horizontal navigational clearances than the existing bridge.
  • A replacement bridge would have a partial horizontal alignment shift to the south to minimize impacts to the residential areas.

Main Bridge

Main Bridge
  • Replacement with a new, two-lane mid-level moveable bridge.
  • No additional travel lanes are proposed.
  • Two 8-foot wide emergency shoulders, a 15-foot wide multi-use trail on the south side, and a 5-foot wide sidewalk on the north side of the bridge are proposed.
  • Replacement on the existing alignment with construction of a temporary bridge to maintain vehicle and pedestrian/bicycle traffic during construction will also be considered.