Engineering a Better Traffic Flow
Abonmarche designed and prepared plans for reconstruction and additional travel lanes for Douglas Road, increasing the traffic lanes from two lanes to five and six lanes on the east side of the SR 23 intersection. The project provided a new Portland cement concrete pavement with curbing, sidewalks, street lighting and a new storm water management system.
The storm water management system included a series of bio-detention/retention basins which were utilized to enhance water quality, reduce pipe sizes, and reduce the surface discharge to the environmentally sensitive Juday Creek. A portion of the storm sewer was perforated pipe (appropriately positioned) to provide additional sewer capacity and groundwater recharge. The basins were uniquely shaped and planted to treat and cool the storm water runoff. A cold water discharge was design to minimize thermo-loading on the Juday Creek (a cold water trout stream).
A new traffic signal system was designed for the intersection and coordinated with the State Highway Department to accommodate the double left turn lanes coming from the east. Another signal system was designed for the Marketplace Drive intersection that provided video vehicle detection. Bus pull-off bays for Transpo were also designed at the Marketplace Drive intersection.
- Increased traffic lanes from two to six
- New traffic signal system
- New pavement, curb and gutter, sidewalks, lighting, and storm sewer