Agenda - Council - 08/08/2016 - Laserfiche WebLink

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8820.9941 LOCAL STATE-AID ROUTE STANDARDS,FINANCING 38 Clearance of 1.5 feet from the face of the curb to fixed objects must be provided when the posted speed is 40 to 45 mph. A ten foot clear zone measured from the driving lane must be provided when the posted speed exceeds 45 mph. For volumes greater than 15,000 projected ADT,at least four through-traffic lanes are required,unless a capacity analysis demonstrates that a different lane configuration achieves level of service D or better. Structures: Vehicular roadway bridge and underpass structures when two-way bicycle traffic is accommodated: on bridge or underpass sidewalks,the sidewalk clear width shall be no less than eight feet,but preferably ten feet. Whenever practicable,the shoulder/clear zone of an off-road shared use path should be carried across bridges and through under- passes. The minimum structure clear width must be 12 feet. When the surface width plus shoulder/clear zone full width of the approach shared use path is greater than the proposed clear width of the structure, a lead-in bicycle safety railing is required at each end of the bridge or underpass. As an alternative to lead-in bicycle safety railing,the surface width of the approach shared use path may be narrowed at a 1:50 taper while maintaining minimum surface width and shoulder/clear zone through the structure. Statutory Authority: MS s 14.386 History: 37 SR 697 8820.9946 MINIMUM DESIGN STANDARDS,URBAN; RECONDITIONING PROJECTS. Subpart 1. Two-way streets. In the following design chart, total width is from face- to-face of curbs. Reconditioning projects for two-way urban roadways must meet or exceed the mini- mum dimensions indicated in the chart. Number of Through Total Width Total Width with Total Width with Proposed Lanes, Functional Class, with No Parking on One Parking on Both Structural and Present Traffic Volume Parking Side Sides Design Strength (feet) (feet) (feet) (tons) 2-Lane Collector or Local 26 32 38 (b) 9 with ADT< 10000 4-Lane Collector or Local 44 52 60 (b) 9 with ADT< 10000 2-Lane Collector or Local 26 32 42 9 with ADT > 10000 or 2-Lane Arterial(a) 4-Lane Collector or Local 44 54 64 9 with ADT > 10000 or 4-Lane Arterial 6-Lane Collectors or 66 (c) (c) 9 Arterials Engineering judgment may be used to choose a lane-width or shoulder-width dimen- sion other than the widths indicated in the chart for roadways. Factors to consider include safety, speed, population/land use, benefit/cost analysis, traffic mix, peak hourly traffic, farm equipment,environmental impacts,terrain limitations,bicycle traffic,pedestrian traf- fic, other nonmotorized uses, functional classification, or other factors. Widths less than