LUBA RET. EX 076/077 RE-E - Laserfiche WebLink

❑ Hierarchy of Residential Streets Notes Provide a hierarchy of neighborhood streets by function including a range of streets such as residential boulevard, residential collectors with parking on one or both sides, local residential streets with parking on one or both sides, access lanes, and alleys. ❑ Connected Street System Provide a connected street system with relatively short blocks. Blocks should be no longer than 600 feet. (Make sure also that each phase of a subdivision provides connec- tivity). This provides at least two means of access to a residence. Also, frequent intersections encourage slow, cautious driving since drivers encounter cross-traffic at regular intervals. In case of the need to evacuate a neighbor- hood, a grid system of interconnected streets will provide many routes that help residents leave the area safely. Include alleys where appropriate. Alleys can provide access to the rear of homes, and an evacuation route. Require and protect street stub-outs and discourage road closures to ensure future street connections. Cul-de-sacs should be avoided both from a connectivity and public safety point-of- view. If a cul-de-sac is used and it is longer than 150 feet, it may need to be wider in order to assure there is adequate space for access and maneuverability of large vehicles, including fire apparatus. Right-of-way ❑ Address not only pavement width, but what happens from the curb to the property line and utility easements. Consider what will happen to the extra land that is no longer needed for the street or right of way; should it go to extra residential lots, neighborhood amenities or both? Consider balancing extra land required for the right-of-way from the developer (for park rows, for example) with a reduction of other requirements such as building setback, or lot size. Streetscape (Landscaping and Hardscape) Design the street to be a neighborhood amenity that will increase livability. Landscaping with trees and parkrows considerably improves the appearance of a street and the comfort of pedestrians. (Make sure that tree species and location do not interfere with large vehicle access). Sidewalks/ trails, curb extensions, textured crosswalks, some traffic calming features, and the preservation of natural features can reinforce optimal function of the narrow neighborhood street. Consider that curb design and the amount of impervious surface affect water quality and infiltration rates for the sur- rounding area. The street cross-section designs provided are intended to function with or without raised curbs, given an appropriate, compatible drainage system or adequate infiltra- tion. 13 E L 0 103