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Street Category1 | Minimum Pavement Width6 | Curb Or Shoulder7,11 | Sidewalk
| Minimum Right Of Way Width
|
Street Category1 | Minimum Pavement Width6 | Curb Or Shoulder7,11 | Sidewalk
| Minimum Right Of Way Width
|
Residential Access | ||||
Low intensity | 22 feet | 6 foot shoulder | Not required10 | 66 feet |
Medium intensity | 28 feet | Curb | Sidewalk (one side) | 60 feet |
High intensity | ||||
On street parking | 28 feet | Curb | Sidewalk (each side) | 60 feet |
Off street parking | 25 feet | Curb | Sidewalk (each side) | 60 feet |
22 feet | 6 foot shoulder9 | 66 feet | ||
Residential Subcollector | ||||
Low intensity | 22 feet | 6 foot shoulder | Not required10 | 66 feet |
Medium intensity | 28 feet | Curb | Sidewalk (one side) | 60 feet |
High Intensity | 28 feet | Curb | Sidewalk (each side) | 60 feet |
One side parking | 36 feet | Curb | Sidewalk (each side) | 66 feet |
Two side street parking | 25 feet | Curb | Sidewalk (each side) | 60 feet |
Off street parking | 22 feet | 6 foot shoulder9 | 66 feet | |
Residential Collector8 | ||||
Low intensity | 24 feet | 8 foot shoulder | Not required10 | 70 feet |
Medium intensity | 27 feet | Curb | Sidewalk (each side) | 60 feet |
24 feet | 8 foot shoulder9 | 70 feet | ||
High intensity | 27 feet | Curb | Sidewalk (each side) | 60 feet |
24 feet | 8 foot shoulder9 | 70 feet | ||
Commercial/Industrial Access | ||||
Off street parking | 24 feet | 8 foot shoulder | Not required10 | 70 feet |
27 feet | Curb | Sidewalk (one side) | 60 feet | |
On street parking | 32 feet | 8 foot shoulder | Not required10 | 80 feet |
32 feet | Curb | Sidewalk (one side) | 60 feet | |
Special Purpose | ||||
Rural residential lane | 20 feet | 6 foot shoulder | Not required10 | 66 feet |
Cul-de-sac2 | ||||
Marginal access3 | ||||
Divided street4 | ||||
Stub street5 | ||||
Notes:
2. Pavement and right of way widths of cul-de-sac stems and right of way requirements shall conform to standards of either residential access or subcollector streets as dictated by anticipated average daily traffic. Cul-de-sac turnarounds shall have a minimum pavement radius of 50 feet. Minimum cul-de-sac right of way radius shall be 60 feet with pavement curbs and 70 feet with roadside swales. Alternative type turnarounds may be considered in very low traffic situations.
3. Pavement and right of way widths of marginal access streets and right of way requirements should conform to the standards of either residential access or subcollector streets as dictated by anticipated daily traffic. If the classification is a subcollector requiring a 36 foot pavement, pavement width may be reduced to 28 feet since frontage is restricted to one side of the street.
4. Pavement and right of way widths of divided streets and right of way requirements should conform to the standards of street classification as dictated by anticipated average daily traffic and be applied to aggregate dimensions of the 2 street segments.
5. Pavement and right of way widths of stems and right of way requirements should conform to the standards of street classification as dictated by anticipated daily traffic.
6. Pavement width measured from edge to edge of surface or when curbs are present, from back to back of curb.
7. Curbs may also be required as indicated in subsection 8-6-3-4D1b of this title.
8. Pavement width assumptions - street parking and direct access (driveways) to lots and buildings are prohibited.
9. Use of shoulders is allowable only when: 1) note 8 conditions are met; and 2) sidewalk requirement is waived, street right of way is increased to provide space for sidewalks and drainage swales or sidewalks are provided outside of the street right of way.
10. Sidewalks or paved paths may be required in specific situations depending on probable pedestrian traffic and proximity of and need for access to schools, shopping and other facilities.
11. Shoulders shall consist of the following widths of aggregate and earth material:
Street Category | Aggregate | Earth | Total |
Residential access | 2 feet | 4 feet | 6 feet |
Residential subcollector | 4 feet | 2 feet | 6 feet |
Residential collector | 6 feet | 2 feet | 8 feet |
Commercial/industrial access | 4 feet | 2 feet | 6 feet |
Rural lane | 2 feet | 4 feet | 6 feet |
(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)
Standards
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Local Street Hierarchy
| ||||
Rural Lane
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Cul-De-Sac
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Residential Access Street
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Residential Subcollector
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Residential Collector
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Standards
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Local Street Hierarchy
| ||||
Rural Lane
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Cul-De-Sac
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Residential Access Street
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Residential Subcollector
|
Residential Collector
| |
Minimum grade(3) | 0.5% | 0.5% | 0.5% | 0.5% | 0.5% |
Maximum grade | 10% | 10% | 8% | 8% | 7% |
Maximum grade within 50 ft. of intersection | 4% | 4% | 4% | 4% | 2% |
Minimum length vertical curve(1) | |||||
Crest | 30A | 20A | 20A | 30A | 80A |
Sag | 40A | 30A | 30A | 40A | 70A |
Minimum centerline radius | 280 ft. | 170 ft. | 170 ft. | 280 ft. | 600 ft.(2) |
Minimum tangent length between reverse curves | 150 ft. | 100 ft. | 100 ft. | 150 ft. | 250 ft. |
Minimum edge radii | 20 ft. | 25 ft. | 25 ft. | 30 ft. | 35 ft. |
Notes:
(1) "A" = algebraic difference in grades (percent).
(2) Collector radius based on 40 mph and no super elevation. Radius may be reduced if design speed is reduced and/or super elevation is provided.
(3) Minimum grade for streets with curb and gutter edging. Minimum grade for streets with shoulder edging and drainage swales may be a 0.0 percent grade.
(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)
FIGURE 1
RESIDENTIAL ACCESS STREET
RESIDENTIAL ACCESS STREET
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1680.gif)
FIGURE 2
RESIDENTIAL SUBCOLLECTOR STREET
RESIDENTIAL SUBCOLLECTOR STREET
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1682.gif)
(1) Widths of high intensity development streets vary according to allowable on street parking conditions. See section 8-17-1-2 of this chapter.
(2) Parkway width varies according to street width.
(3) Base course thickness dependent on design traffic volume.
FIGURE 3
RESIDENTIAL COLLECTOR STREET
RESIDENTIAL COLLECTOR STREET
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1684.gif)
FIGURE 4
COMMERCIAL/INDUSTRIAL ACCESS STREET
COMMERCIAL/INDUSTRIAL ACCESS STREET
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1686.gif)
(1) Assumes no on street parking. If parking allowed, increase pavement width to 32 feet and right of way to 80 feet.
(2) Required pavement section based on ADT = 400 with SU and MU trucks = 10% each. If traffic volumes or truck percentages are more than these base amounts, increase the pavement structure section to suit the traffic conditions.
(3) An equivalent stabilized base (asphalt, cement or BAM) may be used instead of the aggregate base indicated.
(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 10-001, 1-12-2010)
FIGURE 1
TYPICAL DRIVEWAY CONNECTIONS
TYPICAL DRIVEWAY CONNECTIONS
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1688.gif)
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1690.gif)
Notes:
1. Culvert diameter shall be as required by local drainage conditions. Minimum size shall be 12 inch diameter.
2. Culverts shall be of concrete, corrugated metal or plastic pipe material as specifically approved by the governing county or township highway department. Headwalls will not be allowed.
3. Culvert length shall be sufficient to provide for the established driveway width, 2:1 shoulders and 3:1 side slopes.
4. Driveways shall be sloped to a low point over the street swale culvert unless the existing swale is too shallow and cannot be regraded to an adequate depth.
5. Driveway radius requirements shall be dependent on specific street and driveway dimensions and traffic conditions. In some cases, a turning lane may be required.
6. Driveway pavement materials and thickness (minimum requirements) within the street right of way shall be as follows:
Residential: 12 inches of aggregate base material or 2 inches of bituminous concrete with 6 inches of aggregate base or 4 inches of aggregate base material with 5 inches of concrete and wire mesh.
Nonresidential: 4 inches of aggregate subbase, 9 inches of bituminous base course, 21/2 inches bituminous binder course, and 11/2 inches bituminous surface course or 4 inches of aggregate base with 6 inches of concrete and wire mesh.
Concrete driveways should extend no closer than 3 feet from the edge of the public road or street pavement. Bituminous concrete shall then be used to pave the remaining driveway to the edge of the road.
FIGURE 2
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1692.gif)
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1694.gif)
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1696.gif)
FIGURE 3
![](https://export.amlegal.com/media/edecde497b9ce711ede169047b5c4922514ac648/IMAGES/0-0-0-1698.gif)
(Res. 91-096, 12-10-1991; amd. 2004 Code; Ord. 06-020, 11-14-2006; Ord. 10-001, 1-12-2010; Ord. 2014-006, 4-8-2014)
A. Preliminary Plats:
MUNICIPAL PLANNING COMMISSION APPROVAL
If the proposed subdivision lies within 11/2 miles of the municipality, the Preliminary Plat must be approved by the Planning Commission of that municipality. A certificate indicating such approval, to be signed by the Chairman, shall be placed on the Plat. The following wording is suggested:
STATE OF ILLINOIS )
County of Grundy )
Approved by the Planning Commission of the (Municipality) of (name) this (day) of (month), (year).
(signature)
Chairman
COUNTY BOARD CERTIFICATE
A certificate shall be provided to indicate approval of the preliminary plat by the Grundy County board. Space for the signature of the county board chairman and the county clerk shall be provided. The following wording is suggested:
STATE OF ILLINOIS )
County of Grundy )
Approved by the County Board of Grundy County, Illinois, this day of , 20 , A.D.
Chairman, Grundy County Board
Attest:
Grundy County Clerk
ZONING BOARD OF APPEALS CERTIFICATE
A certificate shall be provided to indicate approval of the preliminary plat by the Grundy County zoning board of appeals. Space for the signature of the county board chairman and the county clerk shall be provided. The following wording is suggested:
STATE OF ILLINOIS )
County of Grundy )
Approved by the Zoning Board of Appeals of Grundy County, Illinois, This day of , 20
Chairman, Grundy County Zoning Board of Appeals
B. Final Plat:
CERTIFICATE INDICATING PROXIMITY TO MUNICIPALITIES
A certificate indicating the proximity of the subdivision to nearby municipalities shall be placed on the final plat. The certificate shall list all municipalities within eleven (11) miles of the subdivision, or if there are none, shall so state. The certificate shall be signed by the surveyor who prepared the plat. The following alternative wordings are suggested, depending on which situation exists:
A. This Plat of subdivision does not lie within 11 miles of any existing corporate municipalities.
(signature)
Registered Illinois Land Surveyor
B. This plat of subdivision lies within 11 miles of the corporate municipality(ies) of (list)
(signature)
Registered Illinois Land Surveyor
OWNER'S CERTIFICATE AND NOTARY CERTIFICATE
A certificate shall be placed on the final plat indicating the ownership of the land being subdivided. A notary certificate shall be placed beneath the owner's certificate in witness of the owner's signature. The following general wording of the two (2) certificates is suggested:
OWNER'S CERTIFICATE
STATE OF ILLINOIS )
County of Grundy )
This is to certify that the undersigned, (list name) , is (are) the legal owners(s) of record of the land described on the plat hereon drawn and shown hereon as subdivided, and that he (they) has (have) caused said land to be surveyed, subdivided, staked, and platted as shown hereon, for the purpose of having this plat recorded as provided by law.
In witness whereof I (we) have hereunto set my (our) hand(s) and Seal(s) this day of A.D. 20 .
(Seal)
(Seal)
NOTARY CERTIFICATE
STATE OF ILLINOIS )
County of Grundy )
I, Notary Public in and for said County and State aforesaid, do hereby certify that (list names) , personally known to me to be the same person(s) whose name(s) is (are) subscribed to the foregoing instrument as such owner(s) appeared before me this day in person and acknowledged that he (they) signed and delivered the annexed plat at his (their) own free and voluntary act for the uses and purposes therein set forth.
Given under my hand and Notarial Seal this day of 20 A.D., at Illinois.
Notary Public, My Commission Expires
COUNTY ENGINEER
STATE OF ILLINOIS )
County of Grundy )
I, , County Engineer of the County of Grundy, Illinois, hereby certify that the land improvements described in the annexed plat, and the plans and specifications therefor meet the minimum requirements of said County.
Given under my hand and seal, this day of 20 .
County Engineer
ROAD COMMISSIONER'S CERTIFICATE AND NOTARY CERTIFICATION
All final plats must be approved by the road commissioner for each political township in which the subdivision lies. A certificate indicating that the road commissioner has approved the final plat along with a notary certificate shall be required. The following wording is suggested for the road commissioner and notary public certificate:
I, (name) do hereby certify that this Final Plat and accompanying engineering drawings meet all requirements of the Grundy County Subdivision Ordinance pertaining to roads. I hereby agree to accept and maintain the roads and streets of this subdivision upon their completion in accordance with the laws of the State of Illinois.
(Name) Township Road Commissioner
Given under my hand and Seal, this day of , 20 at , Illinois.
Commission
NOTE:
If interior subdivision roads abut upon county or state highways, an additional certificate of acceptance signed by either the county superintendent of highways or a representative of the Illinois department of transportation (as appropriate) shall be placed upon the plat.
SURVEYOR'S CERTIFICATE
The surveyor who prepared the final plat shall place thereon a certificate of substantially the following wording:
STATE OF ILLINOIS )
County of Grundy )
This is to certify that I, , registered Illinois Land Surveyor, No. have surveyed and subdivided the property as described and as shown by the annexed plat, which is a correct representation of said survey and subdivision. All distances are shown in feet and decimals thereof.
Given under my hand and seal at , Illinois, this day of , 20 .
CERTIFICATE REGARDING FLOOD HAZARD
In accordance with the counties code, 55 Illinois Compiled Statutes 5/3-5029, the surveyor shall determine if any part of the proposed subdivision lies within a flood hazard area as identified by the federal emergency management agency. An appropriate certificate shall be placed on the plat and signed by the surveyor. The following wording is suggested, depending on which situation exists:
A. I certify that none of the above described property is located in a flood hazard area as identified by the Federal Emergency Management Agency.
(signature)
Illinois Registered Land Surveyor
B. I certify that none of the above described property is located in a flood hazard area as identified by the Federal Emergency Management Agency except as indicated.
(signature)
Illinois Registered Land Surveyor
CERTIFICATES REGARDING MONUMENTS
The plat act requires the surveyor to set certain subdivision monuments at the time of making his survey, and to describe them on the plat. The following certificate, to be signed by the surveyor, shall be placed on the final plat to indicate that all monuments have been set and described as required by statute.
This is to certify that I, , a Registered Illinois Land Surveyor, No have set all subdivision monuments and described them on this Final Plat as required by the Plat Act (765 Illinois Compiled Statutes 205/0.01 et seq.).
Registered Illinois Land Surveyor
LOCAL HEALTH DEPARTMENT CERTIFICATE
The plat act, as amended January 1, 1988, requires the local health department, if one exists, to sign a plat with respect to sewage disposal systems if any part of the platted land will not be served by a public sewer system. The following wording is suggested:
No public sewer system exists to serve this subdivision. Sewerage system suitability has been determined for all platted lots in accordance with the pertinent sections of the Grundy County Subdivision Ordinance.
(signature)
Public Health Administrator
COUNTY CLERK'S CERTIFICATE
The county clerk shall make a tax search of the land being subdivided. A certificate is required on all final plats, indicating that any back taxes and the required tax search fee have been paid. The following is suggested:
STATE OF ILLINOIS )
County of Grundy )
County Clerk in Grundy County, Illinois, does hereby certify that there are no delinquent general taxes, no unpaid current general taxes, no unpaid forfeited taxes, and no redeemable tax against any of the land included in the annexed plat.
I further certify that I have received all statutory fees in connection with the annexed plat.
Given under my hand and seal of the County at Morris, Illinois this day of 20 .
County Clerk
ZONING BOARD OF APPEALS CERTIFICATE
A certificate shall be placed on the final plat to indicate the approval of the zoning board of appeals. The following wording is suggested:
STATE OF ILLINOIS )
County of Grundy )
Approval this (date) day of (month), (year)
Zoning Board of Appeals
Chairman
Plat Officer
CERTIFICATE OF SPECIAL ASSESSMENTS
STATE OF ILLINOIS )
County of Grundy )
I, County Treasurer of the County of Grundy, do hereby certify that there are no delinquent or unpaid current or forfeited special assessments or any deferred installments thereof that have been appointed against the tract of land included in the plat.
Given under my hand and seal of the County at Morris, Illinois, this day of , 20 .
County Treasurer
COUNTY BOARD CERTIFICATE
A certificate shall be provided to indicate approval of the final plat by the Grundy County board. Space for the signature of the county board chairman and the county clerk shall be provided. The following wording is suggested:
STATE OF ILLINOIS )
County of Grundy )
Approved by the County Board of Grundy County, Illinois, this day of , 20 .
Chairman, Grundy County Board
Grundy County Clerk
(Ord. 2018-012, 6-12-2018)
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