TITLE 12
PUBLIC WORKS IMPROVEMENTS
SUBJECT
CHAPTER
COMMERCIAL FRONTAGE ROADS
1
RURAL STREET STANDARDS
2
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TITLE 12 PUBLIC WORKS IMPROVEMENTS
CHAPTER 1
COMMERCIAL FRONTAGE ROADS
SECTIONS:
12-1-1
12-1-2
12-1-3
12-1-4
Intent
Developer's Responsibilities
Design Standards
Final Plans
12-1-1 Intent. The purpose of a commercial frontage road
is to provide access to real estate located along and adjacent to
existing and proposed arterial streets and limited access highways.
All proposed commercial frontage roads shall be aligned parallel
and adjacent to the existing right-of-way of either the arterial
street or limited access highway.
All proposed commercial frontage roads shall be initially
reviewed by the Planning and Zoning Commission. The Planning and
Zoning Commission shall make a recommendation to the City Council
on the proposed lay out. The City Council will make the deter-
mination of whether the proposed frontage road will be accepted
as a public street.
All commercial frontage roads providing access to laid out
lots of record shall be constructed in accordance with the specifi-
cations of the City Engineering Department. Upon completion of
the construction and inspection approval by the City Engineering
Department, the frontage road shall be dedicated to the City as
a laid out public street.
12-1-2 Developer's Responsibilities. The developer shall
file a duly completed and executed bond, escrow agreement, or other
collateral, the amount to be determined by the City Engineering
Department, certified by the City's Corporate Council as valid and
enforceable by the City, with the Finance Director at the time of
filing final construction plans with the Engineering Department.
This performance guarantee shall be retained by the City Clerk
until the improvements have been satisfactorily completed in
accordance with the specification of the City Engineering Depart-
ment.
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Prior to proceeding with the construction, the developer
must show evidence of contractors and public liability insurance
for both personal injury and property damage (the amount of such
insurance shall be determined by the City Engineering Department),
by filing a current certificate of such insurance with the City
Clerk. A maintenance bond guaranteeing workmanship and materials
for a period of two (2) years from the date of acceptance is
required.
12-1-3 Design Standards. All designs shall be based on
accepted engineering practices and sound planning principles.
The developer shall provide a complete set of reproducible drawings
to the City Engineering Department. The design of all proposed
frontage roads submitted for approval shall be prepared by a
Professional Engineer registered in the State of Iowa. All costs
associated with required construction inspections performed by the
City Engineering Department shall be paid by the developer. In
the event that the workload of the City Engineering Department
does not permit timely construction inspections, the inspection
may be completed by a qualified independent inspector approved
by the City, however, the final inspection and acceptance will
be made by the City Engineer.
12-1-4 Final Plans. The following criteria shall be
incorporated in the final plans:
(A) The minimum right-of-way for frontage roads shall be fifty
feet (50') (15.25 meters), as designated by the Iowa Depart-
ment of Transportation.
(B) The paved width shall be a minimum of twenty-four feet (24')
(7.3 meters), with a surface consisting of seven inches (7")
(17.8 centimeters) of concrete, as specified by Iowa DOT
standards relating to C-3 mix.
(C) The shoulder adjacent to an existing arterial or limited
access highway shall be stabilized for a width of ten feet
(10') (3 meters) from the pavement according to Iowa DOT
specifications - Class A three-fourths inch (3/4") stone six
inches (6") (15.25 centimeters) thick. Normally underground
power and/or telephone utilities will be installed within
the right-of-way on this side of the pavement, on or
established rear/side lot line easements.
(D) The paved portion of the frontage road adjacent to commercial
oriented establishments shall be curbed. Normally water
lines shall also be installed within the right-of-way on
this side of the pavement.
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(E) The maximum number of curb cuts per commercial lot fronting
on a commercial frontage road is two (2). The maximum width
of the cut at the property line shall be twenty-five feet
(25') (7.6 meters), the maximum width of the cut at the paved
frontage road shall be determined by the City Engineer.
(F) Based on existing and projected development of the general
vicinity, sidewalk construction or a surety bond guaranteeing
installation 'at a future specified date may be required at
the discretion of the City Council.
As applicable, the following criteria may be incorporated
in the final plans and shall be installed by the developer:
(A) The final plan should indicate the location of all sanitary
sewer installations within the right-of-way.
(B) The final plan should indicate any street lighting fixtures
which may be required.
(C) Clearing, grading, replacement of top soil, final seeding,
and landscaping will be the responsibility of the developer.
(D) The final plan should indicate any required storm sewers/
culverts for the purpose of handling surface runoff.
(E) A turn around radius shall be provided on dead end frontage
roads.
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TITLE 12 PUBLIC WORKS IMPROVEMENTS
CHAPTER 2
RURAL STREET STANDARDS
SECTIONS:
12-2-1 Intent
12-2-2 Area of Impact
12-2-3 Design Standards
12-2-1 Intent. The purpose of this amendment to the City Code is
to establish reasonable rural residential street standards consistent
with safe, convenient vehicle and pedestrian circulation.
Consideration of appropriate balance among initial construction costs,
amortization costs, operating and maintenance costs, and replacement
costs were considered in formulating these rural residential street
design standards. The adoption of a consistent standard based on
rural residential traffic load, subgrade soil, surface drainage and
climatic conditions in this area will contribute toward promoting the
quality of our residential neighborhoods. Commercial and industrial
subdivision streets will be reviewed on a case-by-case basis by the
City Engineer.
12-2-2 Area of Impact. The design standards are applicable to
new residential streets for the Muscatine Island area, specifically
for that portion within the corporate limits west of Highway 61 and
south of Sampson Street and east of Highway 61 and south of Maple
Grove Road as extended from its intersection at Latham Street toward
Highway 61; and for those rural areas outside the corporate limits but
within two (2) miles thereof, which are subject to subdivision review
by the City of Muscatine as provided by the Code of Iowa, Section
409.14.
12-2-3 Design Standards. For the appropriate locations as
specified above, the following minimum design standards shall apply as
follows:
(A) The right-of-way width shall be sixty-six feet (66'), except that
at the end of a cul-de-sac diameter shall be one hundred feet
(100').
(B) Two (2) twelve foot (12') travel lanes are to be provided to serve
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the residential area. This twenty-four foot (24') travel surface
width shall have a four foot (4') stabilized shoulder on each
side. The hard surfaced turning radius at the end of a cul-de-sac
shall consist of forty feet (40') to the outside of the travel
surface.
(C) Drainage shall be provided for by grader ditching parallel to each
roadway shoulder. Driveway culverts shall be provided and
maintained by the property owner, the diameter of which shall be
determined by the City Engineer.
(D) The surface material for travel lanes shall have an equivalent to
a structural number (SN) of 4.0. The thickness and type of
material for the travel lanes shall be reviewed by the City
Engineer for a determination of the SN. This method allows for
the substitution of material, such as asphalt, flyash mixtures,
and concrete, along with the type of roadway base, to achieve a
strength and service life acceptable for rural residential area.
NOTE: SN = 4.0, equivalent strength is equal to eight inch (8")
concrete.
(E) In the rural residential area defined above, sidewalks are not
required.
(F) In the rural residential area defined above, a pipe storm sewer
system is not required.
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