Mobility, safety and aesthetics are important aspects of living in the City of Urbandale, Iowa. Douglas Avenue, a major arterial, was planned to meet these important aspects of living in Urbandale. The western limit of the Douglas Avenue Streetscape Project was Interstate 35/80 and extended east to the Easterly boundary of the City near the Merle Hay Mall. Planning elements within the corridor include buffer area enhancements, pavement type variations, roadway geometrics and traffic safety. The first phase of the capitol improvement projects was the Douglas Avenue and 70th Street Intersection Improvements. The original Douglas Avenue pavement was constructed as a 2-lane highway (HWY 6) by the Iowa Department of Transportation. The State of Iowa made a Transfer of Jurisdiction of HWY 6 to the City of Urbandale where 70th Street was paved and parking added along Douglas Avenue, which was the status of the intersection at the time of the design. The traffic study prepared indicated for safe and efficient traffic flow, two lanes with separate turns in each direction were needed for Douglas Avenue and one lane with separate turn lane in each direction were needed for 70th Street. The roadway widening design included base courses, HMA overlays, concrete paver installation and PCC curb and gutter installation. Additional buffer area improvements design, done by others, included decorative sidewalks, street lights, corner elements and access relocations. The project was constructed in 1996 at a cost of $1,300,000. The special concrete paver installation has performed exceptionally well for 20 plus years.


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Lee Chamberlin Consultant Engineers
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Van Meter, IA 50261
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