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Connecting Central Florida with Purpose

FDOT's 61-mile SunRail corridor enhances mobility and eases congestion in Central Florida

DESIGNER

2025

With a bold vision to reshape regional transportation, the Florida Department of Transportation (FDOT) has transformed a 61-mile CSX freight rail corridor into SunRail — Central Florida’s first commuter rail system. This landmark project enhances mobility, connects communities, eases congestion and lays the groundwork for sustainable growth in the region.

“SunRail brings reliable, affordable and stress-free travel to the region,” said Rafael Rodriguez, FDOT project manager. “This is a generational project that helps to safely connect our communities to more opportunities and experiences.”

Spanning 17 stations across four counties, SunRail delivers safe, reliable and modern service to a rapidly growing population. By offering a viable alternative to Interstate 4, SunRail helps reduce congestion while supporting regional mobility. In 2024 alone, SunRail served more than 1.2 million passengers — a testament to its growing role in Central Florida’s transportation future.

Aligning with local priorities

FDOT, supported by HNTB as the construction engineering and inspection (CEI) consultant and general engineering consultant (GEC), ensured that each segment of the SunRail line was tailored to local needs while maintaining consistent quality and safety standards. The team worked closely with cities, residents and businesses to shape the infrastructure to reflect community priorities.

Steve Kramer

“Our CEI team wasn’t just there to inspect — we were there to help the contractor succeed and protect the client’s interests. We brought a collaborative mindset and the technical expertise to solve problems quickly and keep the project moving.”

Steve Kramer
HNTB Project Manager

“Our approach on SunRail was deeply rooted in collaboration,” said Steve Kramer, HNTB project manager. “We worked intentionally to ensure every stakeholder group felt seen, heard and valued — not just meeting expectations, but tailoring solutions that truly reflected each community’s unique priorities.”

That meant synchronizing train schedules with major employers, providing unique architectural station features, restoring a historic Amtrak station and enhancing landscaping and noise mitigation. In one city, the team widened a pedestrian tunnel under the railroad and prepared the infrastructure to accommodate plans for electric vehicle charging stations, a welcome center with restrooms, and a bicycle parking and repair area to serve its active cycling community. 

Equally important to meeting community needs was ensuring public safety. In addition to installing signal arms and exit gates, FDOT implemented a robust annual safety certification program for construction inspectors, workers and agency personnel to ensure the safety of both workers and the public.

“From the very beginning, whenever a community raised a concern, we made it a priority to meet with them directly and establish open lines of communication,” Rodriguez said. “By actively listening and incorporating their feedback, we were able to make meaningful adjustments that led to successful outcomes. That spirit of collaboration continues today — we remain in close contact with our local partners to ensure SunRail services evolve in step with the community’s changing needs.”

Strong local engagement is especially important as FDOT prepares to transition SunRail operations to local governments in the coming years — laying the groundwork for a more community-driven and regionally responsive rail network.

Modernizing Fare Collection

 

As FDOT’s GEC for SunRail operations, HNTB helped lead the modernization of the system’s fare collection — providing an alternative to the traditional tap-on, tap-off process with a flexible, user-friendly mobile ticketing platform.

Previously, passengers were required to tap on and tap off using SunCards or paper tickets purchased at station ticket vending machines. To streamline this process and improve the overall rider experience, HNTB supported FDOT in launching a mobile app that allows users to:

  • Purchase tickets and passes in advance
  • Check real-time train status
  • Board and exit seamlessly — no kiosk tap required for either

This digital upgrade has reduced wait times, simplified fare payment and improved convenience across the network. While station ticket machines remain available, more than half of all riders have already made the switch to the app — a number that continues to grow as adoption accelerates.

Reducing risk, accelerating progress

To manage the scope and complexity of this multijurisdictional effort, the team delivered SunRail in three phases — a strategy that reduced risk and accelerated visible progress. 

  • Phase 1 opened 32 miles of commuter service with 12 stations connecting DeBary to Sand Lake Road in 2014. Construction of the initial operating segment included double-tracking existing lines, installing new wayside signals, implementing a local dispatch control system, equipping trains with positive train control (PTC)-compliant equipment and upgrading grade crossings to enhance safety. Additionally, the project built station platforms, canopies, parking areas and a large operations and vehicle maintenance center. 
  • Phase 2 South extended the line 17.2 miles from Sand Lake Road to Poinciana in 2018. Through a design-build delivery, the project features 13.5 miles of double track, a new wayside signal system, PTC-compliant equipment, grade-crossing safety enhancements — including a warning system — four stations, a parking garage, a south maintenance facility, communications systems, two new bridges and several bridge replacements. 
  • Phase 2 North extended the line 12 miles from DeBary to DeLand in 2024. The project features a new DeLand station, 4 miles of double-track, a signal and communication system, PTC-compliant equipment, 107 parking spaces and enhanced grade crossings for increased safety.

HNTB’s involvement in CEI services across all phases ensured consistency and quality control throughout the project. Carrying forward best practices and lessons learned from one phase to the next deepened the team’s understanding of corridor operations and played a critical role in maintaining Amtrak’s daytime service and CSX’s nighttime operations on the shared-use facility.

“Every phase of SunRail built on the lessons of the last,” Kramer said. “We brought best practices, accelerated timelines when needed and adapted quickly to new partners and challenges.”

“FDOT is pleased with the on-time delivery of SunRail’s final phase,” Rodriguez said. “We set out to deliver the project in line with our goals — safely and within the timeframe needed — and we achieved it.”

Installed, tested and cleared for service

HNTB developed and oversaw 14 contracts, assisted with contractor selections, performed initial contract reviews and inspected the off-site fabrication of signal assemblies, steel and precast bridge segments. 

“We helped streamline installation by ensuring each piece of infrastructure was fabricated to meet rigorous Federal Railroad Administration and Federal Transit Administration requirements and specifications before delivery,” Kramer said. 

In addition to standard inspection and testing services, HNTB supported each step of the safety certification process, and ensured any requests for proposals related to signals and communications included the required testing to expedite revenue service clearance. 

“Our CEI team wasn’t just there to inspect — we were there to help the contractor succeed and protect the client’s interests,” Kramer said. “We brought a collaborative mindset and the technical expertise to solve problems quickly and keep the project moving.”

Shaping the future of mobility

As transportation agencies strive to enhance urban mobility, SunRail serves as a compelling example of what is possible.

“We didn’t just build stations, we helped set the table for future development,” Kramer said. “The infrastructure we put in place is already attracting new housing, retail and trails.”

SunRail demonstrates how legacy infrastructure can be transformed into modern assets that connect communities, lay the foundation for sustainable growth and redefine the role of transit in shaping connectivity.

Protecting Wildlife

 

Throughout the life of the SunRail program, environmental stewardship was a top priority. One of the most significant ecological efforts involved the protection and relocation of hundreds of gopher tortoises — a keystone species essential to Florida’s ecosystem.

 

Working closely with ecological experts, the project team identified and safely relocated the tortoises from sensitive areas along the corridor. The scale of the effort exceeded initial expectations, underscoring the team’s adaptability and commitment to conservation.

 

“From the start, we knew environmental protection would be a critical part of this project,” Rodriguez said. “Our team was well-prepared to respond, and when the number of gopher tortoises exceeded expectations, we adapted quickly to ensure every relocation was done safely and responsibly. Preserving wildlife wasn’t just a requirement — it was a priority.”

 

This initiative reflects the broader values of the SunRail program — balancing infrastructure progress with environmental responsibility.

CONTACT

Steve Kramer, PE

HNTB Project Manager

(407)607-9729

[email protected]

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