FPID: 417545-1


This Design-Build project widens a six-mile section of Seminole Expressway from Aloma Avenue/SR 426 to SR 434 in Seminole County. The project will increase the number of travel lanes from four to eight. Additional work includes pavement milling and resurfacing, drainage pond, bridge widening, bridge reconstruction and roadside safety enhancements. Currently, the project is in the Final Design and Construction Phase of the DesignBuild Project Development process. This contract was awarded to The Lane Construction Corporation in January 2024. Design is anticipated to start Spring 2024 and construction activities beginning later that year.

Noise Studies are performed in the Project Development and Environment Study (PD&E) phase as well as the Design phase, and reevaluated if there is a major change in design to the roadway. A noise wall evaluation for this project was completed. Noise specialists used the approved federal and state criteria for evaluating whether noise abatement or reduction would benefit property owners. The analysis identified noise abatement locations and the proposed method to reduce traffic noise, including walls. The findings are documented in the Noise Study Report.

Click here to see the Turnpike Traffic Noise video.

Project Background

SR 417 is a hurricane evacuation route and a major north-south corridor for commercial and private transportation. The interchanges at Aloma Avenue, Red Bug Lake Road, and SR 434 all serve as important east-west connections. Also, the Cross Seminole Trail crosses over the project area in two locations. Land use adjacent to this project and within the general vicinity of SR 417 consists primarily of residential and commercial development.

The original Project Development & Environment (PD&E) Study was initiated in November 2005 for SR 417 from the Orange County line to the Rinehart Road interchange. A Public Hearing was held on April 17, 2007, to discuss the project status and to offer project stakeholders the opportunity to review project documents and provide comments. Throughout the PD&E Study phase, representatives from the Enterprise made presentations to various agencies and groups in adherence of PD&E commitments which include:

  • Coordinate with agencies
  • Conduct a noise evaluation and abatement (if necessary)
  • Minimize property impacts
  • Protect threatened and endangered species
  • Mitigate freshwater wetland impacts

During the project’s PD&E phase, it was determined that widening of the existing roadway would result in increased traffic noise.  As a result, it was recommended that noise walls be reevaluated during project design at multiple locations along SR 417. Pursuant to the FDOT Design Manual (FDM), Chapter 264 Noise Walls and Perimeter Walls, noise abatement identified as reasonable and feasible in the Noise Study Report (NSR) developed as part of the PD&E documentation, was reevaluated. This reevaluation further assessed noise abatement and determined if it is still reasonable and feasible based on abatement criteria and project design. Results of this reevaluation are documented in an addendum to the project NSR. Results were presented and discussed with affected stakeholders as outlined in FDM Chapter 264 and the FDOT PD&E Manual, Part 1, Chapter 11 (July 2020).

Study Area

The project limits are from Aloma Avenue/SR 426 to SR 434 in Seminole County. The total project length is approximately 6.6 miles (see project location map below).


The existing mainline configuration of SR 417 in the project area consists of two 12-foot lanes, a 10-foot outside shoulder, and an 8-foot inside shoulder in both the northbound and southbound directions. Additionally, there is a guardrail adjacent to the southbound inside lane and a 64-foot grassed median.


The proposed mainline configuration consists of four 12 -foot lanes, a 10-foot outside shoulder, and a 12-foot inside shoulder in both the northbound and southbound directions.

Primary roadway improvements will consist of the mainline widening. Additional mainline improvements will include the following: enhancements to existing stormwater ponds, upgrades to the Intelligent Transportation System (ITS), construction of noise walls in areas that meet FDOT criteria, installation of roadway lighting, enhancements to roadside safety features, and widening and/or replacement of mainline bridges.


Aloma Avenue Interchange:

  • Replacement of existing SR 417 bridges over Aloma Avenue
  • Two additional right turn lanes along the southbound off-ramp
  • An additional left turn lane along the northbound off-ramp
  • An additional eastbound right turn lane along the southbound on-ramp
  • Pedestrian and bicycle accommodations including shared use path along the eastbound and westbound direction
  • An additional westbound thru lane
  • An additional eastbound left turn lane

Red Bug Lake Road Interchange:

  • Modification of existing SR 417 bridges over Red Bug Lake Road
  • An additional right turn lane along the northbound off ramp
  • An additional eastbound left turn lane

SR 434 Interchange:

  • Modification of existing SR 417 bridge over SR 434
  • An additional left turn lane along the southbound SR 417 off-ramp
  • An additional left turn from eastbound SR 434 to northbound SR 417


A State Environmental Impact Report (SEIR) was completed and approved in 2007. The PD&E Study was reevaluated to determine whether the alternatives, impacts, existing environmental factors, and mitigation measures set forth in the 2007 SEIR remain applicable, accurate, valid, and meet state requirements. For more information, please view the  FDOT project development process video.


Schedule is subject to change.

Stay Connected

Project inquires, comments, innovation/technology ideas, or requests to be added to the project mailing list, can be mailed or emailed to:

Christopher Mills, PE

Project Manager
Consultant to the Florida’s Turnpike Enterprise

Media inquiries should be directed to the FDOT, Florida’s Turnpike Enterprise, Public Information Office using the contact information below:


Daniel Jimenez

Community Outreach Specialist
Consultant to the Florida’s Turnpike Enterprise

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