A. Streets.
1. General. Streets shall be installed by developers or owners as designated on the Transportation Element of the Village's Comprehensive Plan in accordance with the following criteria and as required by the Director of Engineering. (Ord.2746 - 6/5/95; Amd. Ord. 5653 - 11/1/21)
2. Traffic Studies. Traffic studies shall be required of all proposed residential developments of fifty (50) dwelling units or more, for all commercial and industrial developments of 10,000 square feet of floor area or more and for businesses with drive-through facilities or as determined by the Director of Engineering. The traffic study shall be prepared by firms with demonstrated competence in traffic engineering and traffic studies related to development. The traffic study will be submitted to the Village for review. (Ord. 2570 - 5/2/94; Amd. Ord. 5653 - 11/1/21)
3. Roadway Design Criteria.
a. The minimum widths of right-of-ways for streets to be dedicated or established shall conform to standards set out in this section.
b. Local streets shall be designed to evenly disperse traffic and minimize concentrations of through traffic. (Ord. 2570 - 5/2/94)
c. Proposed streets which are in alignment or are a continuation of existing streets already named shall bear the name of such existing streets. A different name shall be used if a street is in the same alignment, but is discontinuous, unless that street has a numbered name. No street names may be used which will duplicate or be confused with the names of existing streets in the Postal District(s) serving Orland Park. Names of local origin are preferred. (Ord. 2570 - 5/2/94)
d. If the tract of land proposed to be developed, or any part thereof lies adjacent to a highway over which the Department of Transportation of the State of Illinois, or the Counties of Cook and Will have jurisdiction with respect to maintenance and upkeep thereof and an entrance or entrances are desired from such highway to lots, streets, roadway or alleys in the proposed development, the developer shall submit a written permit application to the appropriate jurisdiction granting permission to construct such an entrance or entrances after preliminary plan approval by the Village Board. The developer shall obtain the written permission from the Village and all other appropriate jurisdictions for all required permits. (Ord. 2570 5/2/94)
e. Proposed developments that are adjacent to existing development shall be designed to accept the alignment and corresponding widths of existing pavements. The Director of Engineering shall determine the proper adjustment where the widenings merge with the existing narrow pavement at the boundary of the property, and shall require the lanes to be painted to designate driving and parking lanes. (Amd. Ord. 5653 - 11/1/21)
f. All street intersections and confluences must encourage safe traffic flow.
g. The minimum standards for a street system based on functional design criteria shall conform to those set forth in Table 6-405(A)(2).
h. Turn lanes. The need for turn lanes shall be determined by a traffic study commissioned by the developer or as determined by Village staff. The traffic study shall use established standards of the American Association of State Highway Transportation Officials (AASHTO). (Ord. 2570 - 5/2/94)
i. Stub streets. Stub streets shall provide continuity between adjoining subdivisions, and shall not exceed 1,000 feet in length. (Ord. 2570 - 5/2/94)
j. Perimeter streets. If it is determined that a perimeter street is necessary, it shall be designed thirty (30) feet in width, back-to-back of curb. Minimum right-of-way on the perimeter street shall be forty-six (46) feet. The street shall be constructed with a fifteen (15) foot parkway on the side of the street where development will be taking place. Upon development of the adjacent parcel, the adjacent developer will contribute an additional fourteen (14) feet of right-of-way along the perimeter street. (Ord. 2570 - 5/2/94)
k. Access control standards. No more than one access on each major or minor arterial will be permitted unless a traffic study indicates that additional access points are necessary. The access point will be located, if possible, a minimum of two hundred (200) feet from the nearest intersection and the nearest curb cut. Shared access should be considered between adjacent parcels. (Ord. 2570 - 5/2/94)
l. Transit design standards. Developments located near existing or planned commuter train stations and bus routes shall be designed in such a manner as to encourage pedestrian and bicycle linkage to these facilities. Pace Development Guidelines may be used as a resource for developments located along fixed route bus lines. (Ord. 2570 - 5/2/94)
m. Cross-Access. Connections between adjacent developments shall be provided to facilitate traffic at locations determined by Village staff. (Ord. 2570 - 5/2/94)
4. Alley Design Criteria. Alleys may be required in business, office and research, and industrial districts unless provisions are made for service access, such as off-street
loading, unloading and parking, consistent with and adequate for the uses proposed. Public alleys shall be prohibited in residential areas except where topographic or other conditions may necessitate their use. The minimum width of an alley right-of-way shall not be less than twenty-five (25) feet. The minimum alley pavement width shall be twenty (20) feet. Dead end alleys are prohibited.
5. Cul-De-Sac Design Criteria. Each cul-de sac shall have a terminus of nearly circular shape with a minimum right-of-way diameter of 120 feet (Table 6-405(A)(2) Each cul-de-sac, in single-family residence districts, shall be not more than 500 feet in length, measured along its center line from the center line of the street of origin to the end of its right-of-way. In multi-family residential areas, cul-de-sac streets shall not exceed 400 feet in length. (Ord. 2570 - 5/2/94; Amd. Ord. 3837 - 12/1/03)
6. Full Streets.
[Reserved.]
MINIMUM STREET STANDARDS BASED ON FUNCTIONAL DESIGN CRITERIA | |||||||||
MAJOR & MINOR ARTERIAL* | MAJOR COLLECTOR | MINOR COLLECTOR | LOCAL STREET | CUL-DE-SAC | |||||
MINIMUM STREET STANDARDS BASED ON FUNCTIONAL DESIGN CRITERIA | |||||||||
MAJOR & MINOR ARTERIAL* | MAJOR COLLECTOR | MINOR COLLECTOR | LOCAL STREET | CUL-DE-SAC | |||||
6 LANE | 5 LANE | 4 LANE | 2 LANE | 4 LANE | 2 LANE | ||||
PAVED SECTION, BACK TO BACK OF CURB (FT.) | 91 | 67 | 67 | 30 | 51 | 40 | 36 | 24 to 30 | 90** |
MEDIAN WIDTH (FT.) | 16 | 16 | 16 | N/A | N/A | N/A | N/A | N/A | N/A |
MINIMUM RIGHT-OF-WAY (FT.) | 120 | 100 | 100 | 100 | 100 | 100 | 80 | 60 | 120** |
MINIMUM CENTERLINE RADIUS (FT.) | 1200 | 1000 | 1000 | 1000 | 700 | 700 | 350 | 175 | 175 |
ADDITIONAL REQUIREMENTS: | |||||||||
1. Sidewalks 5' in width are required on both sides of all public roads within subdivisions with an average lot size of one-half acre or less. | |||||||||
2. In certain locations, a bicycle path with a minimum width of 8 feet shall be required in lieu of a sidewalk on one side of the road in conformance with the bikeways element of the Comprehensive Plan. | |||||||||
3. Left-turn lanes, right-turn deceleration lanes and traffic signals will be required when determined necessary. | |||||||||
*On State and County roads, geometric design standards of the State and County will prevail. **Minimum diameter of bulb | |||||||||
(Ord. 2570-5/2/94 & Ord. 2959-11/18/96)
B. Pavements.
1. General. The arrangement, character, extent, width, grade and location of all streets to be dedicated to the public, all parking lots, and all private streets shall be compatible and complimentary to existing and planned streets, to reasonable circulation of traffic within any development and adjoining lands, to topographical conditions, to runoff of storm water, to public convenience and safety, and in their relations to the proposed uses of the area to be served. All traffic intersections and confluences must encourage safe and efficient traffic flow.
2. Design References. All pavements shall be designed and constructed in accordance with the following references as they apply:
a. "Standard Specifications for Road and Bridge Construction," Illinois Department of Trans-portation, latest edition.
b. "Manual for Structural Design of Portland Cement Concrete Pavement," Illinois Department of Transportation, latest edition.
c. "Manual of Instructions for the Structural Design of Flexible Pavements on Projects Involving MFT, FAS and FAUS Funds," Illinois Department of Transportation, latest edition.
d. "Design Manual," Illinois Department of Transportation, latest edition.
e. AASHTO design standards.
3. Pavement Design Requirements. Pavement design shall relate to the street classification as set forth on the Official Map and as described in this Section. The proposed roads indicated on the Official Map are desired to be eventually constructed, but their actual alignment will be decided upon when a preliminary plan is submitted to the Plan Commission and the Board of Trustees for review and approval. The classification of new streets, as well as variations to street classifications for a given street, shall be submitted to the Director of Engineering for review when the preliminary plan is submitted. (Amd. Ord. 5653 - 11/1/21)
STREET CLASSIFICATION | MINIMUM CROWN | MINIMUM STRUCTURAL NUMBER |
STREET CLASSIFICATION | MINIMUM CROWN | MINIMUM STRUCTURAL NUMBER |
MAJOR ARTERIAL | 5"-2 lane | 4.0 |
MINOR ARTERIAL | 6"-3 lane | 4.0 |
NON-RESIDENTIAL COLLECTOR | 6" | 3.0 |
LOCAL (RESIDENTIAL) | ||
1. Major and Minor Collectors and local streets | 5" | 2.35 |
2. Cul-de-sac | 8" | 2.35 |
3. Private | 5" | 2.35 |
4. Rural/Suburban | 5" | 2.35 |
LOCAL INDUSTRIAL WITH PARKING | 6" | 3.68 |
LOCAL INDUSTRIAL WITH NO PARKING | 5" | 3.68 |
FRONTAGE ROAD (Dedicated) | 5" | 3.0 |
4. Pavement Construction Design. All new streets, public or private, shall be improved and con-structed with pavement that complies with the requirements of this Section as follows:
a. Subgrade. All subgrade material shall have a minimum Illinois Bearing Ratio (IBR) of 3.0. All unsuitable subgrade material, including 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 the soil condition. The soil support IBR values selected for use by the engineer shall represent a minimum value for the soil to be used. Soil tests must be provided to verify suitability of subgrade material.
b. Pavement Design. The pavement design standards shall conform to those set forth in Table 6-405(B)(4), Table of Pavement Design. A copy of all design assumptions and compu-tations on which the proposed pavement design is based shall be submitted to and accepted by the Director of Engineering. (Amd. Ord. 5653 - 11/1/21)
c. Composite Pavement Strength.
1. The pavement shall be designed and constructed so as to obtain a fifteen (15) year service life with only minimal maintenance before a resurfacing is required.
2. Prior to the installation of the bituminous surface course, but after the installation of the binder course, the developer shall notify the Director of Engineering that he intends to surface the street. The Village Engineer may obtain a Dynaflect Pavement Evaluation Program Report of the completed pavement improvements at developer's expense. (Amd. Ord. 5653 - 11/1/21)
3. The Dynaflect Pavement Evaluation Program shall be performed according to the Dynaflect Pavement Evaluation Specification on file in the office of the Director of Engineering. The program shall generally embody the following testing/pavement evaluation techniques:
a. Environmental study (frost cycle, drainage, etc.).
b. Pavement surface evaluation.
c. Soil borings at approximately one location per mile.
d. Dynamic pavement deflection analysis (Dynaflect machine or equal corre-lated with Benkelman beam or equal). (Amd. Ord. 5653 - 11/1/21)
4. The program shall evaluate the existing condition of the base and binder course in maximum two hundred (200) foot sections, and shall determine whether or not the pavement section with the addition of the surface course of design thickness will be projected to meet a fifteen (15) year pavement life or greater.
5. If the pavement section is projected to meet a life expectancy of fifteen (15) years or more, then the developer may proceed as indicated in Subsection 11(d) and 11(e).
6. If the pavement section is not projected to meet a life expectancy of fifteen (15) years or more, then the report shall propose asphalt overlays in excess of the surface course design thickness or pavement reconstruction to bring the new pavement section to a fifteen year life expectancy. The Director of Engineering shall evaluate the results of the report and shall inform the developer of any required pavement repair for each section. These repairs shall be completed before the final surface is applied. (Amd. Ord. 5653 - 11/1/21)
7. The Dynaflect Pavement Evaluation Program shall not be considered valid unless the wearing service was applied during the same construction season. Any costs of additional Dynaflect Pavement Evaluation shall be paid in advance by the developer.
8. In the case of rigid pavements, the developer shall notify the Director of Engineering that he is ready for final inspection on the streets. The Village Engineer will obtain a Dynaflect Pavement Evaluation Program report of the complete improvements as outlined in Subsection B(4)(c) above. (Amd. Ord. 5653 - 11/1/21)
9. The program shall evaluate the existing condition of the pavement in two hundred (200) foot sections and shall determine whether or not the pavement section will be projected to meet a fifteen year pavement life or greater.
10. If the pavement section is projected to meet a life expectancy of fifteen (15) years or more, then the developer will be so notified.
11. If the pavement section is not projected to meet a life expectancy of fifteen (15) years or more, then the report shall propose pavement reconstruction to bring the new pavement section to a fifteen (15) year life expectancy. The Director of Engineering shall evaluate the results of the report and shall inform the developer of any required pavement repair for each section. (Amd. Ord. 5653 - 11/1/21)
5. Pavement Construction Materials. Pavement materials approved for street construction shall comply with the minimum requirements as tabulated in Table 6-405(B)(5), Table of Approved Street Pavement Construction Materials. Coefficients to be used for computing the pavement structural number are listed with these materials. The coefficients will yield the structural number when they are multiplied by the thickness of the materials (measured in inches).
STRUCTURAL MATERIALS | STRENGTH REQUIREMENTS | STRUCTURAL LAYER COEFFICIENT |
M.S. * I.B.R. P.S.I. | ||
Bituminous Surface: | ||
Class I | 1700 | 0.40 |
Base Course: | ||
Aggregate, Type B | ||
Uncrushed | 50 | 0.10 |
Crushed (100%) | 80 | 0.13 |
Aggregate, Type A | 80 | 0.13 |
Waterbound Macadam | 110 | 0.14 |
Cement Aggregate, | 650** | 0.23 |
Bituminous Aggregate, Mixture | 900 -1900 | 0.24 - 0.33 |
Bituminous Mixture, Class I | 1700 | 0.33 |
Portland Cement Concrete | 4000*** | 0.50 |
*Marshall Stability
**7-Day Design Compressive Strength
***28-Day Design Compressive Strength
6. Subgrade Preparation.
a. The subgrade of all paved areas shall be graded and rolled in accordance with SSR & BC, Section 200. Embankment shall be placed and compacted in accordance with SSR & BC, Section 207.
b. At least one Standard Proctor Density Test, performed in accordance with AASHTO T99, shall be taken in each embankment section, with the maximum distance between tests of three hundred (300) feet. One standard proctor density test shall be taken from each different source of borrowed material. The density tests must be submitted for review to the Director of Engineering. Upon review of these tests, an inspection of the subgrade shall be made by the engineer and a report of acceptable subgrade and preparation must be submitted to the Director of Engineering prior to placing any curb and gutter or base material. (Amd. Ord. 5653 - 11/1/21)
7. Grading.
a. Gradients of streets shall be a minimum of one (1) percent where possible and in no case less than seven-tenths (0.7) percent and shall not exceed seven (7) percent, unless approved by the Village. Street grades shall be such as to provide natural surface drainage of storm water regardless of the presence of storm sewer facilities.
b. Where the grade of the street warrants installation of vertical type curb and other special design of improvements because of right-of-way conditions, such as double inlets, the Director of Engineering is authorized to require such design. (Amd. Ord. 5653 - 11/1/21)
c. The minimum length of vertical curves shall be one hundred (100) feet for one and one half (1.5) percent difference of grade. For each additional one (1.0) percent difference in grade over one and one-half (1.5) percent, a fifty (50) foot increment shall be added to the length of a vertical curve. If the grade differential is less than one and one-half (1.5) percent, a vertical curve is not required.
8. Sight Distances. At points of intersection of proposed roads with existing roads, the minimum stopping sight distance indicated below for the legal speed limits shall be provided on existing roads. Clear visibility, at any point of movement along the road measured along the center line of the street, shall be provided for at least three hundred fifty (350) feet on all major streets, two hundred (200) feet on collector and local streets, or as designated by an engineering study.
Legal Speed Limit (MPH)* | Minimum Stopping Sight Distance |
25-30 | 200 Ft. |
35-40 | 275 Ft. |
45-50 | 350 Ft. |
55 | 475 Ft. |
*If the Village Engineer determines that the projected future legal speed limit established in accordance with the State of Illinois "Policy for Establishing and Posting Speed Limits" is higher than the existing legal speed limit, the higher speed limit shall be used to determine the minimum stopping sight distance.
Posting Speed Limits" is higher than the existing legal speed limit, the higher speed limit shall be used to determine the minimum stopping sight distance. (Amd. Ord. 5653 - 11/1/21)
9. Curb and Gutter.
a. Combination curb and gutter shall be constructed on both sides of all street pavements and shall comply with the requirements of Construction Standards Governing Public Improvements, as adopted by the Director of Engineering, and as updated from time to time. (Amd. Ord. 5653 - 11/1/21)
b. Two (2) No. 4 reinforcing bars shall be placed continuously between expansion joints. Expansion joints shall be doweled and spaced no more than sixty (60) feet on center and at tangent points of all radii. Control joints shall be provided at least fifteen (15) feet on center and shall consist of an actual saw cut, at least one and one-half (1 ½) inches deep. If curb machines are used, doweled sections are not required.
c. Curbs installed by slip joint machines shall be allowed.
d. Unless otherwise directed by the Director of Engineering pursuant to IDOT standards, a barrier curb shall be provided on all major streets. All other streets shall be provided with curbs per latest Village standards. Depressed curbs shall be provided at all bikepath and sidewalk crossings. Materials shall comply with those specified in Section 6-406. (Amd. Ord. 5653 - 11/1/21; Amd. Ord. 5822 - 7/17/23)
e. Unless otherwise directed by the Director of Engineering pursuant to IDOT standards, a barrier curb, as denoted as Type 3 on Exhibit No. STR-04, shall be provided on all major streets. All other streets shall be provided with curbs as denoted as on Exhibit No. STR-03. Depressed curbs shall be provided at all bikepath and sidewalk crossings. Materials shall comply with those specified in Section 6-406. (Amd. Ord. 5653 - 11/1/21)
10. Design of Pavement Thickness.
a. The following minimum structural numbers and minimum pavement thickness shall be required in the design of pavements:
FLEXIBLE AND RIGID PAVEMENTS | ||
FLEXIBLE PAVEMENTS | THICKNESS* | |
Minimum Structural Number | Binder Course | Surface |
2.00 to 3.00 | 3" | 1" |
3.01 to 3.99 | 3 1/2" | 1" |
4.00 and greater | 4" | 1" |
(Ord. 3837 - 12/1/03) | ||
RIGID PAVEMENTS** | THICKNESS*** | |
3.00 to 3.99 | 6" to 8" | |
4.00 to 4.99 | 8" to 10" | |
*Bituminous Concrete Binder and Surface Course, Class I (SSR & BC, Section 406).
**Concrete pavement shall be reinforced with 6" x 6", #6 steel fabric.
***Thickness shall be rounded up to the nearest one-half (1/2) inch.
b. Flexible pavement materials can be used until November 1, weather permitting. Any work done after November 1, shall require written authorization from the Director of Engineering. Such authorization, if obtained, will not void the contractor's and the developer's guarantee on the work done.
c. Flexible pavements must set for a minimum of nine (9) months, including a winter and a spring. After this setting period has passed, one pavement core per nine hundred (900) lineal feet of measured pavement must be taken. A report must be submitted to the Director of Engineering that lists the thicknesses of base and binder courses and the type and condition of subgrade material as determined from the cores. If the results of the cores indicate pavement deficiencies, additional cores will be needed at intervals required by the Director of Engineering. All cores taken shall be numbered and delivered to the Director of Engineering.
d. Upon receipt of the report and cores, the Director of Engineering will review the report and will perform an inspection of the existing base and binder courses. All base and binder course failures will then be repaired to the Director of Engineering's satisfaction.
e. Upon completion of all construction within any development, the Director of Engineering will conduct a deflection test as specified in Subsection 4(c) above. All deficiencies outlined in the report shall be repaired as specified in the report and to the Director of Engineering's satisfaction prior to the installation of the final surface course.
(Amd. Ord. 5653 - 11/1/21)
C. Traffic Signals. The need for traffic signals will be determined by a traffic study commissioned by the developer or as determined the Village staff. The traffic study shall use established standards of the Manual of Uniform Traffic Control Devices (MUTCD), and the American Association of State Highway and Transportation Officials. (Ord. 2570 - 5/2/94)
D. Emergency Vehicle Access. Emergency vehicles access shall conform to the codes of the appropriate Fire District. (Ord. 2570 - 5/2/94)
E. Fire Lanes. Fire lanes shall conform to the codes of the appropriate Fire District. (Ord. 2570 5/2/94)
F. Exhibits. The most current Standard Detail Exhibits shall be applied to any improvements required by these regulations. (Ord. 2570 - 5/2/94; Amd. Ord. 5822 - 7/17/23)
G. Street Identification Signs.
1. The developer/property owner shall submit the list of street names approved by the Director of Engineering and a map for the installation of street identification signs immediately after the approval of engineering drawings. (Amd. Ord. 5653 - 11/1/21)
2. The Village shall order signs and mounting hardware in accordance with its present design standards. Identifications signs shall be installed as soon as work schedules and weather conditions permit after all the signs and mounting hardware are reserved. Signs shall not be installed until the first lift of pavement and street light poles are installed. (Ord. 2570 - 5/2/94)
3. The Village shall invoice the contractor an amount equal to the cost of the signs and mounting hardware plus twenty-five percent (25%) for handling and installation of the signs. The developer/property owner shall make payment in full to the Village within thirty (30) days of the date of the invoice.
(Ord. 4880 - 2/3/14)