(A) General.
(1) All street pavements within the village shall be constructed in accordance with the following:
(a) Standard Specifications for Road and Bridge Construction, State of Illinois, Department of Transportation, Current Edition.
(b) The current edition of the Illinois Department of Transportation's Design Manual.
(2) Design requirements for the pavement shall be related to the classification of the street based on the zoning classification of the area adjacent to the subject street and/or the street classification as set forth in the official map. The classification of new streets, as well as variations to street classifications as shown in Table 1 below for a given street, must be submitted to the Zoning Administrator for his or her review prior to submittal of the preliminary plat to the Planning Commission.
(3) At the request of the Village Engineer, a copy of all design assumptions and computations on which the proposed design is based shall be submitted.
(4) The Pavement Design and Right-of-Way Chart (Table 1) establishes minimum right-of-way widths and the minimum design standard for a particular street classification. If, in the opinion of the Village Engineer, traffic use or geometric considerations for a road or part of a road warrants modified design, detail, a greater right-of-way width, a wider pavement width, and/or a greater structural number than listed on the chart, it shall be required.
TABLE 1. PAVEMENT DESIGN AND RIGHT-OF-WAY WIDTH CHART
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Street Classification
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Minimum Right-of-Way Width
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Minimum Width of Face of Curb
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TABLE 1. PAVEMENT DESIGN AND RIGHT-OF-WAY WIDTH CHART
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Street Classification
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Minimum Right-of-Way Width
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Minimum Width of Face of Curb
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Arterial | 80 feet | 48 feet or two 24-foot median with strip |
Collector | 80 feet | 38 feet |
Minor Residential 1. Cul-de-Sac* Circular End Diameter 2. Dedicated (other than #1 above) 3. Private (PUD) | 66 feet 120 feet 66 feet 66 feet | 30 feet 30 feet 30 feet 30 feet |
Industrial | 80 feet | 40 feet |
Business | 80 feet | 40 feet |
Marginal Access Streets | 66 feet | 28 feet |
Frontage Road (dedicated) | 66 feet | 28 feet |
NOTE: * The pavement diameter to face of curb of circular-ended cul-de-sac shall be a minimum of 100 feet. | ||
(5) Private streets in planned developments shall typically, at a minimum, meet the minimum requirement for street width and design for minor residential streets, shall have curb and gutter on both sides of the street, and shall have a minimum centerline radius of curvature of 150 feet. However, some deviation from these standards may be allowed if approved as a part of the Planned Development.
(B) Pavement design.
(1) General. All pavements shall be designed in accordance with the previously referenced standards and manuals.
(a) The design thickness shall be dependent on the soil support value and the projected traffic factor; however, in no case shall thicknesses of pavements be less than the minimum specified in the Illinois Department of Transportation's Design Manual.
(b) Actual or projected traffic counts, along with sufficient soil boring data, will be required for the structural design.
(2) Subgrade. All subgrade material shall have a minimum Illinois Bearing Ration (IBR) of 3.0.
(a) Subgrade material having an IBR less than 3.0 shall be removed and replaced with a suitable fill material, or the pavement must be designed to compensate for soil conditions.
(b) The soil support IBR values used by the designer shall represent a minimum value for the soil to be used.
(c) The results of all IBR tests are to be submitted to the Building Inspector.
(3) Flexible pavements.
(a) A minimum of 3 inches of compacted asphalt is required for all flexible pavements. This surface shall consist of 1 1/2-inch Class I surface course and 1 1/2-inch Class 1 binder course.
(b) Pavements with a structural number of 4.00 - 4.99 will require 4 inches of asphalt. This surface shall consist of 1 1/2-inch Class 1 surface course and 2 inches of Class I binder course.
(c) The final surface course is to be applied after all other public improvements have been completed, and the bituminous binder course has proven to be stable for a 1- year period.
1. Prior to the laying of the surface course any defects or damage to the curb and gutter or pavement base must be corrected to the satisfaction of the Building Inspector.
2. The streets shall then be thoroughly cleaned and a bituminous tack coat shall be applied at a rate of 0.05 to 0.10 gallons/square yard to assure uniform and complete adherence of the surface course.
(d) To facilitate plowing of snow during the winter months, all manholes, valve vaults, catch basins, inlets, and the like, located within the pavement area are to be ramped with compacted temporary asphalt patch material for the period between the time the road is opened for general traffic and the time the final surface course is applied. This ramp is to be maintained for the duration of the above specified period.
(4) Rigid pavements. The design of all rigid pavements shall be based on the structural design number for the type of street in question.
(a) Portland cement concrete shall be proportioned according to the applicable sections of the state specifications and shall be designed for a minimum 28-day compressive strength of 3,500 psi.
(b) Air entrainment shall be 4% through 7% percent and slump between 2 and 4 inches.
(c) Concrete pavement shall be constructed on a minimum 4-inch crushed aggregate sub base having a gradation of CA-6.
(5) Sight distances. The design engineer shall show at the points of intersection of proposed roads that the following stopping sight distances are provided.
LEGAL SPEED LIMIT | MINIMUM STOPPING DISTANCE |
25 - 30 m.p.h. | 200 ft. |
31 - 40 m.p.h. | 275 ft. |
41 - 50 m.p.h. | 350 ft. |
51 - 55 m.p.h. | 475 ft. |
(6) Subgrade preparation.
(a) The subgrade of all roads shall be graded and rolled in accordance with Section 212 of the "Standard Specifications for Road and Bridge Construction," State of Illinois Department of Transportation.
1. Particular attention is directed to the requirements for the replacement of soft and unstable material as contained in Section 202.03 of those specifications.
2. Embankment shall be placed and compacted in accordance with Section 207 of those specifications.
(b) Compaction tests, (performed by the sand cone method ASSHTO T-191 or with an approved nuclear density moisture meter) shall be taken in each fill section, with the maximum distance between tests of 300 feet for each lift. Density shall be 95% of the maximum density as determined by a Standard Proctor Test.
(c) Proctor tests performed in accordance with AASHTO T-99 shall be taken on each different type of borrow material.
(d) The proctor and density tests must be submitted for review and approval by the Village Engineer.
(e) Upon approval of these tests, an inspection of the sub-grade will be made by the Village Engineer. The sub-grade must be approved prior to placing any curb and gutter or base material.
(7) Curb and gutter. The Illinois Department of Transportation Type 8-6.18 curb and gutter shall be provided on all streets. Any proposed substitutions must meet the approval of the village. Such curb and gutter shall lead into the enclosed storm sewer system contemplated and required by § 153.118. So-called "rural cross sections" or any other type of roadway design that does not incorporate both curb and gutter and the use of enclosed storm sewers shall be prohibited: without otherwise limiting the generality of the foregoing, the use of crushed stone or gravel shoulders and open drainage ditches shall specifically be prohibited.
(8) Subsurface pavement drains.
(a) Subsurface pavement drains may be required at any location where water may collect in the structural elements of the pavement and other engineering solutions may not adequately remove or prevent the entrance of water. Sub-drains may be required because of:
1. A high-water table;
2. Active springs or seeps beneath the pavement; or
3. Excessive amount of surface water entering or collecting in the structural section.
(b) The location of these areas requiring drains may be determined prior to the preparation of the engineering plans. However, the final determination shall be made during the construction phase.
(c) Sub-drains shall meet the following requirements:
1. It shall have adequate capacity to quickly carry away any water that enters the pavement structural section;
2. It must maintain this capacity through the life of the pavement.
(d) Collector pipes shall be a minimum of 6 inches in diameter and shall be of the following materials:
1. Perforated concrete pipe confirming to ASTM C-444;
2. Extra quality concrete drain tile conforming to ASTM C-412;
3. Extra-strength perforated clay pipe conforming to ASTM C-444;
4. Heavy-duty drain tile conforming to AASHTO M-179.
(e) Sub-drains are to discharge into the storm sewer system.
(9) Street lighting.
(a) Street lighting shall be LED and designed in accordance with the requirements of the American National Standard Practice for Roadway Lighting, current edition, except as otherwise required by this chapter.
(b) Construction, materials and equipment shall conform to the applicable requirements of the village's electrical code or other ordinances regulating electrical construction. In the absence of a requirement or ordinance governing a particular matter, reference shall be made to the National Electric Code, adopted edition.
(c) The manufacture, variety and type of street light installed shall be subject to the review and approval of the Village Engineer, provided, however, that all street lights installed along Illinois Route 113 frontage and along South Berta Road, South Will Road and East Spring Road, shall conform to the existing decorative lighting recently installed along and continuing to be installed along Illinois Route 113. Notwithstanding any contrary requirement or provision of this chapter, the spacing of such decorative lighting shall:
1. Utilize existing lighting bases that do not presently have lighting installed thereon;
2. Otherwise conform to the currently established spacing thereof.
(d) The subdivider, owner or developer shall be responsible for the installation of street lighting as required by this chapter and in causing the connection of the same to the electric power supply and distribution system.
(e) Street lights shall be installed:
1. At every "cross" or 'T' intersection;
2. At the end of all culs-de-sac or "eyebrows"; and
3. Not less than every 240 feet along the frontage of all roads and streets within the village.
(f) All electrical lines for street lighting shall be placed in conduit installed by the Developer and as approved by the Village Engineer.
(Ord. 1996-01, passed 2-13-1996; Am. Ord. 2007-15, passed 7-10-2007; Am. Ord. 2021-03, passed 3-9-2021) Penalty, see § 153.999