[Ord. No. 11-2I 118 §1, 5-12-2016]
A. General. The construction of sidewalks will be required
to provide pedestrian access to facilities. The extent of sidewalks
within a subdivision shall be determined by the Planning and Zoning
Commission and approved by the City Council. Generally, sidewalks
are required in subdivisions on at least one (1) side of collector
and arterial streets. All new constructed walks shall meet the requirements
of the current Americans with Disabilities Act. For alterations to
existing facilities sidewalks shall meet the requirements, to the
maximum extent feasible, of the current Americans with Disabilities
Act. The phrase "to the maximum extent feasible" applies to the occasional
case where the nature of the facility makes it virtually impossible
to comply fully with applicable accessibility standards through a
planned alteration. In these circumstances, the alteration shall provide
the maximum physical accessibility feasible. Any altered features
of the facility that can be made accessible shall be made accessible.
All deficiencies shall be reported to the City for approval. Refer
to Standard Drawings ST-6 through ST-7.
B. Design. On low speed roadways (posted speed of forty-five
(45) mph or less), sidewalks are to be separated from the travelway
by a barrier curb. In the event a sidewalk is located adjacent to
a high-speed roadway, another type of physical separation between
the vehicle and the pedestrian such as a guardrail or concrete traffic
barrier will be considered. Sidewalks are not to be designated on
paved shoulders located behind a mountable curb; nor shall paved shoulders
be designated or striped as a pedestrian pathway.
1.
Sidewalks are to be five (5) foot in width. Freestanding objects
mounted on posts, pylons, etc., may overhang a maximum of twelve (12)
inches from twenty-seven (27) inches and eighty (80) inches above
the ground, although this situation should be avoided whenever possible.
Obstacles below twenty-seven (27) inches are not to reduce the sidewalk
width to less than three (3) feet. Obstacles reducing the sidewalk
width below four (4) feet but not less than three (3) feet, should
be corrected, but if not, documented why the sidewalk width was reduced
and the obstacle was not moved or corrected at that location and reported
to the City.
2.
Sidewalks are constructed from Class "A" Portland cement concrete,
four (4) inches thick, except where 6-inch thickness is required in
residential driveways, and 8-inch reinforced thickness is required
in commercial driveways and eighteen (18) inches on either side of
said area. The sidewalk shall be constructed such that panels are
formed using control joints that shall extend to one fourth (1/4)
the depth of the sidewalk. If a grooving tool is used to form the
control joint, the groove shall not be wider than one fourth (1/4)
inch and edged with a one eighth (1/8) inch radius. If the control
joints are sawed, the groove shall not be less than one eighth (1/8)
inch wide. Whichever method of grooving is used the control joints
are to be cut such that the resulting panel lengths are not less than
four (4) feet nor greater than six (6) feet. Edges of the slab shall
be edged with an edging tool that has a one fourth (1/4) inch radius.
3.
Surfaces of sidewalks and all parts of the pedestrian network
must be stable, firm and slip-resistant. Changes in levels up to one
fourth (1/4) inch may be vertical and without edge treatment. Changes
in levels between one fourth (1/4) inch and one half (1/2) inch will
be beveled with a slope no greater than IV:2H (2:1). Level differences
greater than one half (1/2) inch need to be removed or ramped.
4.
Utility covers, such as for manholes, drainage or water meters,
need to have a slip resistant top, as much as possible, and meet changes
in level criteria. Lifting holes on covers need to be less than one
half (1/2) inch in diameter or be satisfactorily plugged so a cane
cannot get lodged in the hole. If grates are located in the sidewalk
or other walkway paths, the grates will have spacing no greater than
one half (1/2) inch wide in one (1) direction. If grates have elongated
openings, then the grates will be placed so that the long dimension
is perpendicular to the dominant direction of travel.
5.
The running slope of the sidewalk should be as level as possible
allowing easy use by travelers. For pedestrian facilities the running
grade will be a maximum of five percent (5%). If this is technically
infeasible, the sidewalk may be consistent with the running grade
of the adjacent roadway. The rate of change in grade, the algebraic
difference, measured over two (2) foot intervals, is not to exceed
thirteen percent (13%).
6.
Sidewalks are to have a minimum one percent (1%) cross slope
to allow for drainage and a maximum of two percent (2%). Any cross
slope over two percent (2%) is non-compliant and must be replaced.
7.
A sidewalk plan must be prepared to show the sidewalk in plan,
profile, and typical cross section. This plan may be included as part
of the street plan.
8.
For sidewalks to be constructed on unimproved streets, it is
necessary to obtain sufficient field data to determine the probable
future grade of the street curb and design the sidewalk accordingly.
Additional right-of-way may have to be provided.
C. Expansion Joints. Bituminous preformed expansion
joints, three fourth (3/4) inch thick and precut to the width of the
sidewalk, shall be indicated on the plans eighteen (18) inches on
each side of driveways, intersecting walks, curbs, and other locations
as required. Expansion joints shall be placed at the locations specified
on the plans or standard drawings. Expansion joints shall be placed
between the sidewalk and all structures, such as light standards,
traffic light standards, traffic poles, and columns, etc., which extend
through the sidewalk. Refer to Standard Drawing ST-4 and ST-6 for
additional information.
D. Ramps.
1.
General. All ramps shall be constructed to
the least possible slope with a maximum allowable slope of 1:12 (8.33%)
and a minimum slope of one percent (1%) for drainage. The maximum
rise for any run shall be thirty (30) inches. Refer to Standard Drawings
ST-7.
2.
A minimum five (5) foot by five (5) foot level landing area
of 0.02ft/ft. Two percent (2%) cross slope or less in any direction
shall be constructed at the top and bottom of each ramp, ramp run,
wherever two sidewalks cross or wherever a turn is required. Diagonal
curb ramps require a four (4) foot by four (4) foot clear space at
the bottom protected within the crosswalk markings.
3.
The minimum width of linear ramps shall be five (5) feet, exclusive
of flared sides. In an alteration, the width of the ramp shall match
the adjoining sidewalk or a minimum of four (4) feet.
4.
The minimum width of parallel curb ramps shall be five (5) feet.
5.
The cross slope on all curb ramps shall be a minimum of one
percent (1%) and up to two percent (2%) maximum.
6.
Grade breaks at the top and bottom of perpendicular curb ramps
shall be perpendicular to the direction of ramp run. Grade breaks
shall not be permitted on the surfaces of curb ramps, blended transitions
and landings within the pedestrian access route. Surface slopes that
meet at grade breaks shall be flush.
7.
At raised islands and/or medians cut-through accessible routes
level with the street with a five (5) foot by five (5) foot spacing
space shall be utilized. Median cut through length is to be four (4)
feet minimum. Detectable warning will be provided at each entrance
to the street.
8.
If a ramp is located where pedestrians must walk across the
ramp, or where it is not protected by handrails or guardrails, it
shall have flared sides with a maximum slope of 1:12 (8.33%). Curb
ramps with returned curbs may be used where pedestrians would not
normally walk across the ramp.
9.
No ramp shall be permitted to project beyond the curb into vehicular
traffic. Curb ramps shall be located or protected to prevent their
obstruction by parked vehicles.
10.
All ramps located at public streets and signalized intersections
shall have a detectable warning panel installed manufactured by Armor-Tile
Transit Systems model ADA-3024-CP or approved equal. Detectable warnings
on walking surfaces are required to be truncated domes having a diameter
of nine tenths (0.9) inch, a height of two tenths (0.2) inch, and
a center to center spacing of one and sixty-five hundredths (1.65)
inches to two and thirty-five hundredths (2.35) inches in each direction.
The truncated dome panel is to contrast visually with adjoining surfaces,
either light-on-dark or dark-on-light. The preferred color contrast
is red for concrete and yellow for asphalt surfaces. The surface area
for truncated domes is a minimum length of two (2) feet covering the
entire width of the ramp or curb opening, excluding the flare sides.
The truncated domes are aligned on a square grid in the predominate
direction of pedestrian travel to permit wheelchair wheels to roll
between the domes. They are to be placed at the bottom of a ramp perpendicular
to the path of travel, and parallel to the grade break, or 6 to 8
inches from the front of the curb depending on the type and location
of the curb ramp. They are also provided at cut-throughs in islands
and medians and shall extend the entire width of the opening at the
face of the curbline. Where truncated domes are placed at the bottom
of a ramp, the path between the domes shall be parallel to the path
of travel on the ramp. At a blended transition or on a landing, the
direction of the path between the domes may vary. Where a sidewalk
crosses a railroad track, the detectable warning surface shall be
located so that the edge nearest the rail crossing is six (6) feet
minimum and fifteen (15) feet maximum from the nearest rail. The rows
of truncated domes in a detectable warning surface shall be aligned
to be parallel with the direction of wheelchair travel.
11.
Curb ramps shall be provided at all street intersections and
at any marked midblock crossings or wherever a sidewalk crosses a
curb. Transitions from ramps to walks, gutters, or streets shall be
flush and free of abrupt changes (one fourth (1/4) inch or greater
change in elevation).
12.
Curb ramps at marked crossings shall be wholly contained within
the markings, excluding any flared sides. If diagonal (or corner type)
curb ramps have returned curbs or other well-defined edges, such edges
shall be parallel to the direction of pedestrian flow. The bottom
diagonal curb ramps shall have forty-eight (48) inches minimum clear
space. If diagonal curb ramps are provided at marked crossings, the
forty-eight (48) inch clear space shall be within the markings. If
diagonal curb ramps have flared sides, they shall also have at least
a 24-inch long segment of straight curb located on each side of the
curb ramp and within the marked crossing.
13.
Curb ramp alignment should be perpendicular to the curb being
crossed to provide a level cut for wheelchairs and directional cues
for the visually impaired. For large radii, it is often not possible
to both, place curb ramps perpendicular to the curb and in-line with
the pedestrian crossing. Ramps may be set back from the curb to provide
a grade break that is perpendicular to the ramps slope and a landing
or blended transition will continue to the curb. If the bottom of
the ramp is more than five (5) feet from the curb, detectable warnings
are placed at the back of the curbline.
E. Design Checklist For Sidewalks.
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Sidewalks shown in plan and profile on at least one side of
residential streets and on both sides of collector and arterial streets.
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On unimproved streets sufficient field data is shown to determine
probable future grade of street curb and sidewalk designed accordingly.
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Typical cross sections shown with plan and profile.
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Location and width of sidewalk is in accordance with Table VII-2.
Sidewalk directly adjacent to a curb to be five (5) foot in width.
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Three fourth (3/4) inch expansion joints are indicated on the
plans.
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Sidewalk thickness of four (4) inch (or six (6) inch when sidewalk
crosses a residential driveway or eight (8) inch reinforced when sidewalk
crosses a commercial driveway or alleys).
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Sidewalk cross slope not greater than 0.02 ft./ft. or 1:50 (2%).
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All ramp running slopes are less than 1:12.
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Maximum rise for any length of run is thirty (30) inches.
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Level landing areas provided at top and bottom of each run.
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Detectable warning system indicated on all appropriate ramp
surfaces.
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Curb ramps provided wherever sidewalk crosses a curb.
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Minimum width of curb ramp - sixty (60) inches.
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Accessible crossing area indicated on any raised island crossing.
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[Ord. No. 11-2I 118 §1, 5-12-2016]
A. General. Curb and gutter is required on all public
improvement street projects.
B. Design. Curb and gutter is to be constructed from
Class "A" Portland cement concrete. The width of the curb and gutter
is to be two (2) foot six (6) inches. The curb height is to be six
(6) inches, and the gutter cross slope is to be one (1) inch in one
(1) foot. The thickness of the gutter shall be six (6) inches for
residential streets and eight (8) inches for collector and arterial
streets. The street plan shall show the top of curb elevation in the
profile. At driveway locations shown on the plans, the gutter is to
be carried across the drive while the curb is depressed to match the
driveway slope. If shown on the plans, curbs cannot be depressed.
A four (4) inch Type 5 aggregate base is to be placed beneath the
curb and gutter. Refer to Standard Drawing ST-3.
C. Expansion Joints. Bituminous preformed expansion
joints, three fourth (3/4) inch thick and precut to the exact cross
section of the curb and gutter shall be placed at all driveway and
intersection radii and at intervals of not more than two hundred (200)
feet. Refer to Standard Drawing ST-4.
D. Design Checklist For Curb And Gutter.
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Curb and gutter provided for on all improved streets.
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Street profile shows top of left and right curb elevations.
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Curb cross section shows curb height - six (6) inch and width
- two (2) feet six (6) inches.
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Gutter thickness six (6) inch local residential streets.
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Gutter thickness eight (8) inch non-residential local streets,
collectors and aterial streets.
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Gutter cross slope is one (1) inch/ft. (except at ramp areas).
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Curb depressed to match driveway slopes.
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Three fourth (3/4) inch expansion joints indicated placed at
all driveways and at intervals of not more than 200 feet.
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[Ord. No. 11-2I 118 §1, 5-12-2016]
A. General. Driveway approaches are located to serve
the operation of vehicles from the street pavement to a garage, parking
area, building entrance, structure, or other approved use located
on the property.
B. Design. Residential driveway approaches shall be
constructed using six (6) inches thick Class "A" concrete. All driveway
pavement shall be poured over four (4) inches thick compacted Type
5 aggregate base. When a driveway approach intersects an existing
four (4) inches thick sidewalk, the area of the sidewalk within the
driveway area including both sides of the sidewalk transition sections
to meet the drive elevation or eighteen (18) inches, whichever is
greater, shall be removed and reconstructed with six (6) inch thick
concrete. The cross slope of the sidewalk area is not to exceed 0.02ft./ft.
or 1:50 (2%). The grade of the driveway approach from the gutter line
shall rise on a constant grade to the front edge (street side) of
the sidewalk area. The slope of the driveway approach shall be at
least 0.01 ft./ft, or 1:100 (1%) and not to exceed 1:8 12.5%).
1.
Commercial/non-residential driveway approaches shall be constructed
using eight (8) inch thick non-reinforced Class A Portland cement
concrete. All driveway pavement shall be poured over four (4) inches
thick compacted Type 5 aggregate base. When a driveway approach intersects
an existing four (4) inches thick sidewalk, the area of the sidewalk
within the driveway area, including both sides of the sidewalk transition
sections to meet the drive elevation or eighteen (18) inches, whichever
is greater, shall be removed and reconstructed with eight (8) inches
non-reinforced thick concrete. The cross slope of the sidewalk area
is not to exceed 0.02ft./ft. or 1:50 (2%). The grade of the driveway
approach from the gutter line shall rise on a constant grade to the
front edge (street side) of the sidewalk area. The slope of the driveway
approach shall be at least 1:100 (1.0%) and not to exceed 1:20 (5%).
2.
No driveway approach shall be permitted which will interfere
with any existing parking meters, signs, traffic control devices,
plantings, cables, poles, guys, water mains, gas mains, or other public
utilities without approval from the Public Works Director. No part
of any driveway approach may be located within four (4) feet of a
drop inlet or other drainage structure nor a pedestrian ramp without
approval from the Public Works Director.
3.
Joint driveway approaches shall be permitted only if there is
a perpetual mutual access agreement approved by the City Attorney
and filed of record in the St. Francois County Recorder's Office.
5.
Residential entrances on existing City roads shall be located
so the edges of the curb opening shall be a minimum of five (5) feet
from the nearest edge of street inlets and ten (10) feet from the
street corner radius point. The edges of the curb opening shall not
project beyond the side property line extended normal to the pavement.
6.
In the case of corner lots, no driveways shall be constructed
within the sight triangle area bounded by the property lines of a
corner lot and a line connecting two (2) points on the property lines
each measured thirty (30) feet from the intersection of the two (2)
property lines at the intersection. Where applicable, easement lines
shall be substituted for property lines.
7.
The distance between adjacent residential entrances shall be
a minimum of twenty (20) feet measured along the road right-of-way
line. When residential development conditions necessitate reduction
of the distance between adjacent residential entrances to ten (10)
feet or less, the City may require a common entrance approach.
8.
Commercial entrances shall not be less than twenty-four (25)
feet wide or more than forty (40) feet wide at the right-of-way line.
The radius used to increase the opening at the curb or pavement edge
shall not be less than ten (10) feet nor more than forty (40) feet.
Exception to the width and/or radius may be required, or allowed with
special approval by the City, to insure adequate provisions for large
vehicles and/or high traffic volume.
9.
Commercial entrances shall be located in accordance with the
site plan requirements and shall be designed so the edges of the curb
opening shall be a minimum of five (5) feet from the nearest edge
of street inlets and as far as possible from the street corner radius
point. The edges of the curb opening shall no project beyond the side
property line extended normal to the pavement.
10.
In the case of corner lots, no entrances, parking spaces or
other obstacles shall be constructed or placed within the sight triangle
area bounded by the property lines of a corner lot and a line connecting
two (2) points on the property lines each measured thirty (30) feet
from the intersection of the two (2) property lines at the intersection.
Sign poles may be allowed if they are fifteen (15) inches or less
in diameter and if the sign they support is not visually obstructing
traffic at the intersection.
11.
The edge or radius of the driveway approach shall not, in any
case, extend beyond the projection of the adjacent property line,
extended perpendicularly to the right-of-way line.
12.
Refer to Standard Drawings ST-2 for residential driveways.
13.
Entrance separation from existing street intersections shall
be designed and submitted to the Public Works Director for approval.
A traffic study may be required prior to approval.
C. Expansion Joints. Where paved approach meets existing
concrete pavement or sidewalk place three fourth (3/4) inch preformed
bituminous fiber expansion joint, cut to template, through new concrete
and one (1) foot from junction with existing concrete, or along inside
edge of sidewalk. Where paved approach meets existing bituminous construction,
omit joint. For intersection with mainline concrete pavement use a
doweled three fourth (3/4) inch expansion joint. Refer to Standard
Drawing ST-4.
D. Sawcutting And Gutter. The curb and gutter section
in front of a driveway (radius point to radius point) shall be sawcut
full depth and removed before the driveway is poured. The entire curb
and gutter section would then be replaced with Class A concrete with
the depth as required for the driveway approach. Any curb and gutter
broken or cracked outside the radius points during this removal shall
also be removed and replaced accordingly.
Any damage to the existing street shall be the responsibility
of the contractor or replace as per the General Conditions Technical
Specifications for Public Improvements.
E. Design Checklist For Driveways.
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Driveway locations indicated on plans.
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Driveway approaches do not interfere with any existing parking
meters, signs, traffic control devices, plantings, cables, poles,
guys, water mains, gas mains, or other public utilities.
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Copy of approved joint driveway approach agreement filed in
the St. Francois County Recorder's office.
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Width of residential driveway approach at right-of-way line
is not less than twelve (12) feet nor more than thirty-three (33)
feet.
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Width of commercial driveway approach at right-of-way line is
not less than twenty-five (25) feet nor more than forty (40) feet.
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Minimum driveway approach clearances:
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Approach not within five (5) feet of a drop inlet or other drainage
structure or pedestrian ramp.
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If corner lot, nearest edge to nearest right-of-way of intersecting
street - thirty (30) feet
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Nearest corner of sight triangle - thirty (30) feet.
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Edge or radius of driveway approach not extended beyond the
projection of the adjacent property line.
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Radius of driveway return is designed for the classification
of street and type of vehicle use.
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Expansion joints indicated.
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Cross slope of sidewalk area within the driveway must not exceed
0.02ft./ft. or 1:50 (2%).
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