Medians provide a barrier between traffic lanes.
Introduction
Medians provide a barrier between traffic lanes. They can be used to provide refuge for people walking and biking, to protect against head-on motor vehicle crashes, to prevent turns, and to provide space for greening. Medians can be installed as part of street reconstruction or retrofit projects.
Figure 3.6H.1:
Medians recommended dimensions
Design Considerations
Preferred width
|
- Medians of 6’ and wider are preferred because they provide an accessible pedestrian refuge space and additional space for greening.
- Consider widths greater than 8’ along major bike crossings to provide adequate refuge space for bikes.
- 4’ medians can be considered in constrained right of way.
- See also bicycle safety islands.
|
Greening
|
- Designers should generally work to include greening in medians whenever feasible.
- Plantings need to be shorter than 3’ tall to maintain visibility.
- Maintenance of greening needs to be coordinated ahead of time.
- There are unique considerations for placing green stormwater infrastructure in a median, including details on inlets and maintenance access. Coordinate with Surface Water and Sewers.
- See greening guidance and green stormwater infrastructure guidance for more details.
|
Curb and gutter
|
Standard 6” curb tops and 1’ gutters are generally used adjacent to medians. If there are catch basins adjacent to medians, 2’ gutters should typically be used.
|
Delineator medians
|
Low-cost medians can be implemented using delineators in street retrofit projects.
|