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41 LOCAL STATE-AID ROUTE STANDARDS,FINANCING 8820.9951
<br /> over 40 11-12 10 9 >10,000 BL 6 or PS 8
<br /> or SUP
<br /> Six-Lane 12 (c) 9 Not Allowed SUP
<br /> Collectors or
<br /> Arterials
<br /> (SL=shared lane;BL=bicycle lane;WOL=wide outside lane;PS=paved shoulder;SUP
<br /> = shared use path)
<br /> Engineering judgment should be used to choose a lane-width, an-road bicycle facil-
<br /> ity, or shoulder width dimension other than the widths indicated in the chart. Factors to
<br /> consider include safety, speed,population/land use,benefit/cost analysis,traffic mix,peak
<br /> hourly traffic,farm equipment, environmental impacts, terrain limitations, bicycle traffic,
<br /> pedestrian traffic,on-street parking,intersection and driveway spacing,rights-of-way con-
<br /> straints,vehicle turn lane configuration,sight distance,sight lines,bus routes,other nonmo-
<br /> torized uses,functional classification,or other factors. Dimensions less than those indicated
<br /> in the chart require a variance in accordance with parts 8820.3300 and 8820.3400.
<br /> (a)A road may be reconditioned under this part if present traffic volumes are less than
<br /> 15,000 ADT.
<br /> (b) When ADT is less than 5,000, seven-ton axle load structural design strength is
<br /> allowable.
<br /> (c)No parking is allowed for six-lane collectors or arterials.
<br /> (d) When creating a multimodal design with a combination of vehicle lane, parking
<br /> lane,and bikeway lane widths,if a vehicle lane width of less than 11 feet is used,the parking
<br /> and bikeway lanes shall be at least one foot wider than the minimum widths. Engineering
<br /> judgment should be used to choose a vehicle lane width of less than 11 feet. Additional
<br /> factors to consider include the types of vehicles (buses, trucks, etc.), peak hour counts,
<br /> turning movements,population/land use,crash history/analysis,terrain limitations,bicycle
<br /> traffic,pedestrian traffic,other nonmotorized uses, and snow storage.
<br /> (e)In determining the parking lane width,the roadway ADT and the vehicle mix shall
<br /> be taken into consideration for residential, commercial and/or industrial areas, or for a
<br /> mixed use thereof.
<br /> A minimum curb reaction of one foot shall be provided unless on-street parking, a
<br /> bicycle facility, or a wide outside lane are provided adjacent to the curb. The dimensions
<br /> for wide outside lanes include the curb reaction distance. When a raised median is included
<br /> in the design of the two-way roadway,a one-foot reaction distance to the median is required
<br /> on either side of the median. Minimum median width is four feet.
<br /> For ADT less than 150, the widths of bridges to remain must be at least the sum of
<br /> the lanes. For ADT greater than or equal to 150,the widths of bridges to remain must be
<br /> at least the sum of the lanes plus one-half the sum of the shoulders,parking lane, and curb
<br /> reaction distance.
<br /> Statutory Authority: MS s 14.386
<br /> History: 37 SR 697
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