Demands placed on highway systems can cause or exacerbate flooding issues. Whether your project is a new highway on new alignment or improvements to existing roadways, HR Green’s professionals have extensive experience addressing the conveyance of stormwater.
We perform coordination and detailed hydrologic and hydraulic modeling to improve geometrics of intersections, analyze impervious areas and alleviate existing drainage problems. We also analyze highway culverts, complete stream and structure surveys, engineer stream crossings and develop detailed plans for drainage alternative analysis.
Our highway drainage services include location drainage studies, bridge and culvert hydraulics and design, scour analysis and unique stormwater collection and conveyance systems.
Highway Drainage Experience
NW Beaver Drive Widening
Des Moines, IA
This project reconstructed the existing two-lane rural section and upgraded to a three-lane urban section with one thru-lane in each direction and a center two-way left-turn lane.
Gillette Street Outfall
Midtown and Montrose, one of the earliest sections of Houston to be developed, currently lacks a storm sewer system that is sufficient enough for the densely populated area.
International Plaza Drive Reconstruction
St. Ann, MO
International Plaza Drive is a collector roadway in the northern section of the City of St. Ann that serves as a major entry point into the City. Innovative water quality measures were used to address the water quality requirements of the project.
The Woodlands Neighborhood Green Initiative Infrastructure
The Village of Hinsdale, Illinois commissioned two separate engineering studies to determine options for improvements to the storm water management and aging/deteriorating infrastructure of the Woodlands Neighborhood.
County Highway 19 Stormwater Re-Use Project
Washington County, MN
A two-mile long county road expansion was designed to provide nutrient and suspended solid load reductions to downstream water bodies.
Nontraditional BMP in Narrow ROW
Maryland Heights, MO
Essex Avenue was one of the first roadway projects in St. Louis to satisfy the water quality stormwater requirements of the Metropolitan St. Louis Sewer District (MSD). These requirements center on the treatment of stormwater runoff before discharge into natural waters.
New Road to Economic Growth
Sioux Falls, SD
The City of Sioux Falls, South Dakota invested $11.1 million to stay ahead of the growth demand with proactive transportation improvements on its 69th Street and Southeastern Avenue project. The City experienced rapid growth and increased demand on a collateral arterial roadway, 57th Street, which resulted in many typical challenges such as increased congestion, roadway deterioration, traffic safety concerns, roadway capacity deficiencies, and delay caused by at-grade rail crossings.