HomeMy WebLinkAboutCity Council Ordinance 2015-14CITY OF PLYMOUTH
HENNEPIN COUNTY, MINNESOTA
ORDINANCE N0. 2015-14
AN ORDINANCE AMENDING CHAPTERS 5 AND 20
OF THE PLYMOUTH CITY CODE (2014100)
THE CITY OF PLYMOUTH ORDAINS:
SECTION 1. Amendment. Section 524.05, Subd. 2 of the Plymouth City Code (DESIGN
STANDARDS—STREETS) is amended as follows:
Subd. 2. Design Standards, Streets.
A. General. In order to provide for streets of suitable location, width and
general improvement to accommodate prospective traffic and afford satisfactory
access to police, firefighting, snow removal, sanitation and road maintenance
equipment, and to coordinate roads so as to compose a convenient system and
avoid undue hardships to adjoining properties, the following design standards for
streets are hereby required.
B. Street Surfacing and Improvements. After the subdivider has installed
sewer and water, the subdivider shall construct poured -in-place concrete curbs
and gutters and shall surface streets to the width prescribed in this Chapter. Types
of pavement shall be as prescribed in the City's Engineering Guidelines/Standard
Detail Specifications. Adequate provision shall be made for culverts, drains and
bridges. The portion of the right-of-way outside the area surfaced shall be
sodded. All road pavement, shoulders, drainage improvements and structures,
curbs, turnarounds and sidewalks shall conform to all construction standards and
specifications in the City's Engineering Guidelines/Standard Detail Specifications
and shall be incorporated into the construction plans required to be submitted by
the subdivider for final plat approval. (Ord. 2008-08, 3/25/2008)
C. Right -of -Way Width.
1. Minimum right-of-way width for minor arterial and collector
streets shall be as shown in the Comprehensive Plan. When not provided
in the Comprehensive Plan, the minimum right-of-way shall be as follows:
(1)
Street Type
Right -of -Way Width
Minor Arterial
100 feet
Major Collector
80 feet
Minor Collector
60 feet
2. The right-of-way width for local streets shall be determined by the
City Engineer and shall be adequate to accommodate pavement width and
other improvements required within the right-of-way. The right-of-way
width for local streets shall generally be 50 feet.
3. In order to ensure safety and accommodate existing and future
street intersections, bridge overpasses, railway crossings, interchanges,
topography and the like, the City may require dedication of a greater right-
of-way width than specified above.
4. A subdivider may be required to install landscaped medians for
certain minor arterial and collector roadways platted within the
subdivision, in accordance with roadway standards established by the City
Engineer and landscape standards established by the City Forester.
AD. Railroads and Principal Arterials. Railroad rights-of-way and principal
arterials where so located as to affect the subdivision of adjoining lands shall be
treated as follows:
1. In residential districts, lots abutting railroad rights-of-way and
principal arterials shall have sufficient lot depth required to accommodate
any additional structure setbacks provided by the Zoning Ordinance.
2. In districts zoned for business, commercial or industrial uses, the
nearest street extending parallel or approximately parallel to the railroad
right-of-way shall, wherever practicable, be at a sufficient distance from
the railroad right-of-way to ensure suitable depth for commercial or
industrial sites.
3. When streets parallel to the railroad right-of-way intersect a street
that crosses the railroad right-of-way at grade, they shall, to the extent
practicable, be at a distance of at least 150 feet from the railroad right-of-
way. Such distance shall be determined with due consideration of the
minimum distance required for future separation of grades by means of
appropriate approach gradients.
BE. Pavement Width.
1. Minimum pavement width for minor arterial and collector streets,
as measured from back of curb to back of curb, shall be in accordance
with the Comprehensive Plan. When not shown in the Comprehensive
(2)
Plan, the minimum pavement width for minor arterial and collector streets
shall be determined by the City Engineer based on anticipated traffic
volume.
2. Minimum pavement width for local streets, as measured from back
of curb to back of curb, shall be as follows:
Local Street Type
Pavement Width
Non -Residential
36 feet
Residential
28 feet
Residential, Low Volume
24 feet
Low volume local street means a street with an average daily traffic count
of less than 500. On such streets, where a narrower pavement width
would help preserve natural resources or are needed due to manmade
constraints, the minimum pavement width may be reduced to a minimum
of 21 feet.
EF. Cul -de -Sac Street Turnarounds and Length.
1. Turnarounds. Cul-de-sacs shall provide a turn -around with a
minimum right-of-way diameter of 100 feet and a minimum pavement
diameter of 82 feet (back of curb to back of curb). Lot lines that directly
abut the turnaround shall be radial to the center of the cul-de-sac. Lot
lines and curb lines at the intersection of the straight portion of the street
and the turnaround shall be rounded with a radius of not less than 20 feet.
Residential cul-de-sacs may include a center island within the turn -around
for snow storage. Maintenance of such center islands shall become the
responsibility of a Homeowners Association for the subdivision. The
pavement width between the outside curb of the turn -around and such
island shall be a minimum of 28 feet wide.
2. Length: The length of a permanent cul-de-sac shall be as follows:
a. Up to 500 feet, as measured from the centerline of the
intersection of origin to the end of the cul-de-sac right-of-way.
b. Between 500 and 750 feet, provided the following
requirements are met: 1) fire flows meet City requirements and
looping of the water system will be provided or is planned for, 2)
there is a secondary access unless waived by the Council and 3) the
street design incorporates features such as curves, signage and/or
additional turnarounds sufficient to minimize traffic backtracking,
limit speeding and provide turning for emergency and service
vehicles.
(3)
C. Existing cul-de-sac streets may be extended beyond 750
feet in length when necessary to accommodate new platting or
redevelopment, provided the following requirements are met: 1)
there is no other street access alternative, 2) the cul-de-sac is
extended the minimum length necessary to provide for reasonable
use of the land, 3) fire flows meet City requirements and looping
of the water system will be provided or is planned for, 4) there is a
secondary access unless waived by the Council and 5) the street
design incorporates features such as curves, signage and/or
additional turnarounds sufficient to minimize traffic backtracking,
limit speeding and provide turning for emergency and service
vehicles.
DG. Street Grades. The minimum grade for all streets shall be 0.75%. Grades
within 30 feet of intersections with arterial and collector streets and grades for the
turnaround portion of a cul-de-sac street shall not exceed three percent.
Otherwise, the maximum grades shall be as follows:
Street Type Maximum Grade
Minor Arterial 5%
Collector 6%
Local 7%
(Ord. 2008-08, 3/25/2008)
£H. Intersections.
1. Streets shall be laid out to intersect at right (90 degree) angles with
a 50 foot minimum tangent from the radius return. The angle of an
intersection may be varied in cases where topography or other factors
justify a variation, but in no case shall a street intersect with another street
at angle of less than 75 degrees. Intersections having more than four
corners shall be prohibited.
2. Proposed new intersections along one side of an existing street
shall, wherever practicable, coincide with any existing intersections on the
opposite side of such street. Street jogs shall have a centerline offset of at
least 125 feet for local streets and 150 feet for minor arterial and major
and minor collector streets.
3. Minimum curb radius at the intersection of two local streets shall
be at least 20 feet; and minimum curb radius at an intersection involving a
collector street shall be at least 25 feet.
(4)
FI. Street Alignment.
1. Deflections (horizontal alignment). When connecting street lines
of the same street deflect from each other at any one point by more than
10 degrees, they shall be connected by a curve with a radius adequate to
ensure a sight distance of not less than 200 feet for local streets, and of
such greater distance as necessary to meet the Minnesota Department of
Transportation Road Design Manual, latest revision, for minor arterial and
collector streets. The City Council may require greater or lesser sight
distances at the recommendation of the City Engineer.
2. Reverse Curves (horizontal alignment). A tangent of at least 50
feet shall be provided between reverse curves on local streets, and of at
least 100 feet on minor arterial and collector streets.
3. Differing Street Gradients (vertical alignment). Differing
connecting street gradients for minor arterial and collector streets shall be
connected with vertical parabolic curves. The minimum length of such
curves shall be in accordance with the Minnesota Department of
Transportation Road Design Manual, latest revision.
SECTION 2. Amendment. Section 2010.01, Subd. 1 F. of the Plymouth City Code
(NUISANCES; GENERAL—NUISANCES) is amended as follows:
F. A structure, or a portion of a structure, located within any residential
zoning district, if the exterior is not completedL 11within 180 days after the date
the building permit was issued• or 2 within 44860 days n -^m the star* e
eanstf uefienupon receipt of notice from the CitXfor structures whiehthat do not
require the issua ee fa building permit. (Ord. 2002-05, 2/12/2002)
SECTION 3. Effective Date. This Ordinance shall be in full force and effect upon its passage.
ADOPTED by the City Council this 26th day of May, 2015.
ATTEST:
Sandra R. Engdahl, Vity Cl rk
(5)
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Kelli Slavik, Mayor