lexington blvd. & oxbow dr.
sugar land, Texas
This project began with a comprehensive study of five alternatives for improvement the intersection of a four-lane, divided arterial city roadway with a two-lane, divided neighborhood collector street. Alternatives included two-way and four-way stop signs, a traffic signal, and one-lane and two-lane roundabouts. The one-lane roundabout alternative was determined to be the most cost-effective solution with total intersection delay projected to be comparable to a traffic signal for the forecast of 16,000 vehicles per day.
Final design included reconstruction of the intersection to provide for channelizing the lanes entering the roundabout from two to one in each direction and to establish the geometry for continuous turning movements at a design speed of 20 MPH. City of Sugar Land standard details were used to design various project elements.
Some of the main design features included:
- One-lane roundabout reduces conflict points for traffic and pedestrians.
- Center of the roundabout features aesthetic retaining walls and landscaping that produce safer lines of sight as you drive around the circle.
- Pavers were used for cross-walks, center circle apron, and around landscaped islands greatly improving the aesthetics of the project.
- Sidewalks and pedestrian ramps were located to function safely with the roundabout traffic and fit into the City of Sugar Land Hike and Bike master plan.
- Project limits and costs were minimized by using doweled curb on much of the existing approach pavement.
- Existing drainage patterns and structures were incorporated into the design to reduce project costs.
- Coordination and support from the local residents was welcomed during the design process which resulted in an award winning finished product.