A. Manuals and Specifications: The design and construction of streets and sidewalks within the jurisdiction of the City shall conform to the most restrictive of the requirements contained in latest edition of the following regulations, manuals, standards and specifications, three (3) copies of each of which shall be on file in the City Clerk's office.
1. City's "Standard Details for Street and Sidewalk Construction".
2. "Manual of Policies and Procedures", Illinois Department of Transportation.
3. "Design Manual", State of Illinois, Department of Public Works and Buildings, Division of Highways, Bureau of Design.
4. "Highway Standards", State of Illinois, Department of Public Works and Buildings, Division of Highways, Bureau of Design.
5. "Manual On Uniform Traffic Control Devices", Illinois Department of Transportation.
6. "Standard Specifications For Road and Bridge Construction", Illinois Department of Transportation.
B. Table I: In addition to the above regulations, manuals, standards and specifications, the following Table I (Minimum Street Standards) shall be used in the design of streets. For the use of this Table, the various street classifications are defined as follows:
1. Collector Street: A street of considerable continuity which carries traffic from minor streets to secondary or primary streets, in eluding the principal entrance streets of residential developments and the principal circulating streets within such a development.
2. Minor Street: A street of limited continuity, used primarily for access to abutting properties and the local needs of the neighborhood.
3. Primary Street: A street that will provide for heavy traffic of considerable continuity that is, or that will be, used as a connection between various districts of the City and adjoining communities.
4. Secondary Street: A street which carries traffic from such facilities as schools, churches, shopping areas and employment centers to high population densities and to primary streets.
TABLE I MINIMUM STREET STANDARDS
Street Classification | Minimum R.O.W. (Ft.) | Minimum Street Width (Ft.) Measured Back to Back of Curb | Minimum* Structural No. (Dt) | Minimum Pavement Construction** |
Street Classification | Minimum R.O.W. (Ft.) | Minimum Street Width (Ft.) Measured Back to Back of Curb | Minimum* Structural No. (Dt) | Minimum Pavement Construction** |
RESIDENTIAL | ||||
Minor | 66 | 35 | 2.30 | 10" compacted crushed limestone base consisting of 6" of crusher run and 4" of CA-6 crushed limestone plus 21/2" bituminous concrete surface course, Class I installed in two lifts. |
Cul-de-sac | Same as for Minor but with 131 ft. diameter at end. | Same as for Minor but with 100 ft. diameter at end. | 2.30 | 10" compacted crushed limestone base consisting of 6" of crusher run and 4" of CA-6 crushed limestone plus 21/2" bituminous concrete surface course, Class I installed in two lifts. |
Collector | 66 | 35 | 2.75 | 12" compacted crushed limestone base consisting of 8" of crusher run and 4" of CA-6 crushed limestone plus 3" bituminous concrete surface course, Class I installed in two lifts. |
COMMERCIAL | ||||
Minor | 66 | 35 | 3.10 | 12" compacted crushed limestone base consisting of 8" of crusher run and 4" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts. |
Collector | 66 | 35 | 3.40 | 14" compacted crushed limestone base consisting of 8" of crusher run and 6" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts. |
MINOR STREETS PROVIDING ACCESS TO CHURCHES, SCHOOLS, HOSPITALS, ETC. | 66 | 35 | 3.10 | 12" compacted crushed limestone base consisting of 8" of crusher run and 4" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts. |
INDUSTRIAL | ||||
Minor | 66 | 35 | 3.40 | 14" compacted crushed limestone base consisting of 8" of crusher run and 6" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts. |
Collector | 66 | 35 | 3.80 | 12 oz. non-woven geotechnical fabric, 18" compacted crushed limestone base consisting of 10" of crusher run and 8" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts. |
SECONDARY | 80 | 49 | 3.80 | 12 oz. non-woven geotechnical fabric, 18" compacted crushed limestone base consisting of 10" of crusher run and 8" of CA-6 crushed limestone plus 4" bituminous concrete surface course, Class I installed in three lifts |
PRIMARY | 100 | 55 | 4.50 | 12 oz. non-woven geotechnical fabric, 8" compacted CA-6 crushed limestone subbase, 8" bituminous base course plus 3" bituminous concrete surface course, Class I installed in two lifts. |
* As defined in section 7-200.06 of the "Design Manual", State of Illinois, Department of Public Works and Buildings, Division of Highways, Bureau of Design.
** Various combinations of pavement types and thicknesses that produce the required structural number may be used if approved by the City Engineer. Properly designed Portland cement concrete pavement may be used if approved by the City Engineer.
(1988 Code §24.405; 1994 Code)