H&H served as the lead designer for the SR 826 Palmetto Expressway design-build project, responsible for roadway, drainage, permitting, temporary traffic control, tolling, bridge and retaining wall design, and coordination of five subconsultants.
The multi-lane, limited-access expressway connects SR 826, I-75, Florida’s Turnpike, and I-95 in Miami-Dade County. The recent completion of express lanes revealed the need for additional operational improvements, prompting expedited delivery through the design-build process. The project provided an additional southbound lane, auxiliary lanes, improved shoulder widths, major modifications to the NW 103rd Street interchange, revised lane access to the southbound express lanes, a new toll site, and safety enhancements along the adjoining frontage road system.
H&H’s work included roadway and drainage design for four miles of expressway widening and resurfacing, as well as five miles of frontage road improvements. These enhancements included new paved shoulders and sidewalks while avoiding utility impacts on this schedule-critical project. The drainage network incorporated an extensive French drain system and converted a conceptual permit into two construction permits.
Structural design included 3R improvements to two frontage road bridges over the Little River Canal, widening of southbound structures over the Metrorail and FEC railroads, widening of northbound and southbound bridges over NW 103rd Avenue, and major modifications to the 103rd Avenue flyover, including a pier relocation and lane reduction.
The project was completed in 2025 at a construction cost of $66.05 million.
