Long Beach Daisy-Myrtle Bicycle Boulevard
By: Min Zhou, P.E., Director of OC Operations, KOA Corporation
The Long Beach Daisy-Myrtle Bicycle Boulevard is a 9.5-mile federal, state, and county-funded bikeway that connects Downtown, Central, and North Long Beach in Southern California. The project includes a number of context-sensitive traffic calming treatments implemented along the corridor including:
- four roundabouts,
- nine traffic circles,
- median refuge islands to improve bicyclist and pedestrian crossings,
- traffic signals and signal modifications,
- pedestrian signals,
- bicycle detectors,
- signing and striping of bike lanes and sharrows, and
- wayfinding signage
The corridor connects numerous residential neighborhoods, of which ten corridors are considered “disadvantaged”, seven parks, twenty-four schools serving over 2,000 students, five shopping districts, the Downtown District, and a variety of businesses.
The featured header photo shows the roundabout implemented at the Linden Avenue and Bixby Road intersection. The roundabout consists of water-efficient landscaping, solar-powered irrigation, mountable curb at the roundabout, bulb-outs on all corners, median refuge with enhanced pedestrian crosswalks, street lighting, biofiltration swales, detention basins, pavement resurfacing, lane reductions, signing and striping, and bike boulevard signage.
To avoid costly catch basin relocations, the KOA team designed biofiltration swales and detention basins in the majority of the intersection corners. The swales and basins are hidden underneath the landscape and work to channel drainage to existing catch basins or act as an overflow water retention facility. The design also provided a water quality management benefit to the project, capturing pollutants from storm water runoff. The bulb-out corner also forces slower navigating speeds due to the vehicular deflection. To ensure that emergency vehicles could still navigate the roundabouts, mountable curbs were implemented to allow larger vehicles to drive over the curb. Landscaping is irrigated, but meets the City’s water conservation and drought tolerance requirements.
Since the recent implementation, the project, particularly the roundabouts have received much positive feedback from the community, and have set the standard for roundabout design throughout the City of Long Beach.