FDOT District 5, SR 46 from SR 500 (US 441) to Vista View (Wekiva 3B), Lake County, FL
|Client||FDOT District 5|
|Role||Traffic Engineering Subconsultant|
Protean Design Group served as a subconsultant and provided signing, pavement markings, signalization, and lighting services for the widening and reconstruction of 0.92 miles of SR 46 and the new intersection at SR 500 (US 441) with a separated flyover from SR 500 (US 441) to SR 46. The project also included 0.47 miles of milling, resurfacing, and shoulder widening.
The intersection at SR 500 (US 441) and SR 46 was originally a diamond interchange, which was converted to an at grade intersection with fly over to serve as the final segment of Wekiva Parkway and connect southbound SR 500 (US 441) with eastbound SR 46. This project required close, continual coordination with the Central Florida Expressway (CFX) to tie into the overall vision for the Wekiva Parkway. Plans were reviewed for consistency with the other segments and signs were designed to CFX standards, rather than the Florida Department of Transportation (FDOT) Plan Preparation Manual (PPM). To alleviate the City of Mount Dora’s concerns with the flyover, the design team used a low-profile design with both steel and concrete options. Full designs for both options were submitted and the final design will be selected based on the lowest bid received by contractors. If the concrete design is selected, it will be the first curved concrete u-beam structure built in the State.
The original typical section of SR 46 was a two-lane rural undivided road with a posted speed of 55 miles per hour (MPH). The new design of SR 46 will be six lanes with a raised median, curb and gutter, 7-foot buffered bicycle lanes, and a posted speed of 45 MPH. The team’s design also included a multi-use path to safely convey bicyclists and pedestrians under the flyover. The original typical section of SR 500 (US 441) was a four-lane rural divided road with flush inside and outside shoulders, a divided grass median, and a posted speed of 55 MPH. The new typical section will include a six-lane suburban road with Type E curb and gutter, 6.5-foot buffered bicycle lanes, and a design speed of 50 MPH. As part of the temporary traffic control plan (TTCP), temporary signal designs included strain poles.
Pavement markings included adding buffered bicycle lanes with cross over ramps and keyholes. A cantilever sign, multi-post signs, custom guide signs, and internally illuminated street name signs were included. Signals were mounted directly to the underside of the bridge deck for SR 500 (US 441) and SR 46 movements. Supplemental mast arms were also added for the north/south movement on SR 500 (US 441). Pedestrian crossings were included, along with video detection at the locations.
Pole-top mounted conventional lighting fixtures were utilized near the residential areas so to not negatively impact nearby residents. LED lights were used for the entire project, which will allow the City of Mount Dora to provide minimal maintenance as LED fixtures tend to last six times longer than traditional high pressure sodium (HSP) lighting.
We coordinated with the Federal Aviation Administration (FAA) to ensure our light pole heights did not exceed their limit. Poles were placed every 50 feet and were both bridge and barrier wall mounted along the flyover and ramps. Pedestrian-scale decorative lighting was also designed, along with bridge underdeck lighting. Bridge maintenance lighting was added throughout the bridge structure and included placement for both steel and concrete options, which the District will determine at a later date. We coordinated with the designer responsible for the SR 500 (US 441) widening north of our project limits regarding tie-in points and a consistent lighting design.