- 143rd Street - Nall to Windsor
Our team prepared the conceptual, preliminary and final design for upgrading the 1-mile segment of 143rd Street east of Nall Avenue to a four-lane arterial. The improved roadway includes curbing, on-street bike lanes, enclosed storm drains, culvert design, landscaping, sidewalk and multi-purpose trails, a traffic signal and a continuous LED street lighting system. Most of the project was constructed within existing right-of-way previously secured through platting of adjacent commercial and residential subdivisions.
The team coordinated planning and design of the project with the Blue Valley School District, as an elementary school and middle school are located at the Mission Road intersection. This effort included traffic studies to evaluate access and circulation at the schools during morning drop-off and afternoon pick-up periods, and construction sequencing to minimize disruption at the schools. The design included a new fully actuated traffic signal with pedestrian provisions at the Mission Road intersection to replace an existing four-way stop sign.
One of the most challenging aspects of the project entailed the coordination of utility relocations within dedicated corridors, while avoiding a major petroleum transmission line running the length of the project. Overhead power and telecommunication facilities along the existing roadway were buried in the dedicated utility corridors.
The lighting system was designed to meet local and IESNA standards for a minor arterial route with on- and off-street bicycle and pedestrian facilities. Some existing light poles along the project with high-pressure sodium fixtures were re-used in the design by retrofitting them with new LED luminaires. Extensive coordination with local utility agencies was required to avoid conflicts with the street lighting infrastructure and to energize the system at various power supply locations.
Public engagement activities for this project included public meetings and project updates on the City of Leawood website.
- Alignment studies
- Drainage design
- Lighting design
- Public involvement
- Roadway design
- Traffic analysis
- Utility coordination