Street Design Manual

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19 Section 3.2.3 - B Avenue 3-Lane, Parallel Parking

A Three-lane Avenue with on-street parking and bike lanes offers significant flexibility. The cross- section is ideal to use in a context featuring residential uses with some ground floor commercial uses or in areas with a mixture of uses. This type provides significant multimodal accessibility and mobility, yet maintains lower speeds and an appealing character, particularly when the center lane includes some landscaped median features. Sidewalks are required on both sides of the street. Use of GSI practices may be desirable with Three-lane Avenues, including permeable pavement for sidewalks and on-street parking areas and bioretention within medians. In addition, Three-lane Avenues also are conducive to use of curbside bioretention and bioretention in curb extensions/bump-outs, stormwater planter boxes, and stormwater street trees (also referred to as tree boxes) as alternatives to tree grates. The Main Street type is most appropriate where active frontage and mixed commercial uses exist. On-street parking can be installed in parallel or angled fashion, depending on need and available right-of-way. Due to high anticipated pedestrian activity, design speeds are kept low. This condition also allows bicycles to share space with automobiles in general travel lanes, negating the need for distinct bike lanes. Main Streets are primary candidates for “festival” treatments, in which a portion of the street may be temporarily restricted to non-motorized traffic only for special events. Additional landscaping and traffic calming techniques that are well-suited for Main Streets include street trees in grated wells, bioretention areas/planters, curb bulb-outs with or without bioretention, and a relatively high density of street furniture and public art. Main Streets also are conducive to the use of permeable pavement in on-street parking areas and for sidewalks. Pedestrian-scale street lighting should be installed, and utilities should be located underground, in alleys or other streets to the greatest extent possible. Sidewalks are required on both sides of the street. Boulevards are designed to support multiple travel modes, including automobiles, freight movers, transit vehicles, pedestrians and bicyclists. Boulevards balance high vehicular capacity with high pedestrian and vehicular accessibility to adjoining urban land uses. Landscaped medians, including those incorporating GSI practices, separate and buffer through traffic from a local access are that accommodate parking, low-speed vehicular traffic, bicyclists and pedestrians.

20 Section 3.2.3 - C Main Street, Parallel or Angular Parking

21 Section 3.2.4 Major Streets