Design Standards for Streets
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Public or Private Industrial
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Item
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Major Street
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Minor Street
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Commercial Street
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Minimum width of right-of-way
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60 feet
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50 feet
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80 feet
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Minimum width of pavement
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24 feet
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20 feet
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40 feet
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Minimum grade
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0.5%
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0.5%
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0.5%
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Maximum grade
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6%
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9%
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6%
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Maximum grade at intersections
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3% within 50 feet of intersection
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Minimum angle of intersection
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60°
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60°
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80°
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Pavement radius at intersection
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30 feet
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20 feet
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40 feet
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Width of shoulders; shoulders may be graveled, paved or grassed
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6 feet
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6 feet
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6 feet
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Minimum center-line radii on curves
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200 feet
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150 feet
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500 feet
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Minimum distance between intersections:
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Same side
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400 feet
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300 feet
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300 feet
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Opposite side
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300 feet
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150 feet
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150 feet
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Minimum radii of circular turnaround
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100 feet
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100 feet
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100 feet
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Construction Standards for Streets
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---|---|---|---|---|---|
Public or Private Industrial
| |||||
Item
|
Major Street
|
Minor Street
|
Commercial Street
| ||
Road base (minimum) of gravel
|
14 inches
|
14 inches
|
20 inches
| ||
Upper base (minimum) of crushed gravel
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6 inches
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4 inches
|
6 inches
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Bituminous paving base coat of Type B mix as defined (in accordance
with current MDOT specifications)
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1 1/2 inches
|
1 1/2 inches
|
1 1/2 inches
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Surface coat
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1 inch
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3/4 inch Type D mix
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1 inch
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Road crown (minimum)
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1/4 inch per foot
|
1/4 inch per foot
|
1/4 inch per foot
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Sidewalks (when required)
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Width (minimum)
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5 feet
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5 feet
|
5 feet
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Base (gravel)
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8 inches
|
8 inches
|
8 inches
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Surface - bituminous hot top
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1 inch of Type C mix overlaid by 1 inch of Type D mix or concrete
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The Planning Board may require the construction of acceleration/deceleration
lanes by the subdivider where necessary to avoid traffic hazards.
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0% to 3%
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Loam and seed
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3% to 6%
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Loam and seed, protected by erosion control mesh
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6% to 8%
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Sod placed over loam
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Over 8%
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Stone, masonry, bituminous concrete or metal linings.
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