Projects Roundabouts

116th and Hazel Dell Roundabout Design

Carmel, Indiana

DLZ provided design to construct a modern roundabout at the existing signalized intersection of 116th Street and Hazel Dell Parkway in Carmel, Indiana.

This project involved traffic forecasting and operational analyses to determine roundabout lane requirements for the Horizon year. Approach work extends approximately 800 feet along north, south and east legs and approximately 700 feet along the west leg. The roundabout was designed to accommodate a three lane entry on southbound approach (Hazel Dell Parkway), two lane entry with dual right-turn bypass lanes for northbound approach (Hazel Dell Parkway), two lane entry for eastbound approach (116th Street) and two lane entry with dual right-turn bypass lanes for westbound approach (116th Street).

Other key design elements to this project include: drainage design, overhead utility relocations, landscaping, lighting, overhead lane use signs, right-of-way, multi-use trails, bike lanes, retaining walls and maintenance of traffic.

This project was funded through Federal Congestion Mitigation and Air Quality (CMAQ).