HomeMy WebLinkAboutOrdinance 1997 (413) ORDINANCE AMENDING CHAPTER 18,
COUNTY SUBDIVISION ORDINANCE, RELATING TO ROAD CONSTRUCTION
Ordinance No. 13 ( ' ' 7 )
St. Croix County, Wisconsin
WHEREAS, the County subdivision ordinance presently requires all roads
constructed in connection with subdivision development be constructed with shoulders and
ditches (rural design roads);
WHEREAS, the Board of Supervisors believes that roads with curbs (urban design
roads) should be allowed as an option to rural design roads if a developer so desires and
the town in which the subdivision is located is willing to accept the maintenance obligations
for such a road;
THEREFORE, the St. Croix County Board as shown on the attachment (additions
amends Chapter 18, County Subdivision Ordinance,
are shaded; deletions are lined through).
Dated this /Ad day of C1, �� , 1997.
Offered by: Planning, Zoning and Parks Committee
NEGATIVE AFFIRMATIVE
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STATE OF WISCONSIN
' UN1'Y OF ST. CROIX
I. Su3 a Nelson. SL C *
County and:, CO (HEREBY CERTIFY till
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Sue E. Neton. SL Croix County Giant
•
PROPOSED REVISIONS TO
THE ST. CROIX COUNTY SUBDIVISION REGULATIONS
FOR URBAN DESIGN ROADS
18.11(B)(2) (t) Storm water management and erosion control data and plans.
Such plans shall be based upon a 25 -year storm event and also
be based upon the publication, "Wisconsin Construction Site
Handbook, Department of Natural Resources, April 1, 1989,
Publication WR-222-89", and as subsequently revised. Erosion
control plans for public and private roads shall follow the
standards of Section 107.20 of the publication, "Wisconsin
Department of Transportation Standard Specifications for Road
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and Bridgc �:;:�;:: »� ::: >:< >: » »: :: >:: >::;. �:;:;:::: »:::;::: ; < : ;:.::::;:.:;.;::::a :. :.: >:::::.::: :.....:.......:... ;:.;
and as subsequently revised. Storm water
management and erosion control plans shall be submitted over
the signature and seal of a registered professional engineer or
surveyor. The application materials shall require the registered
professional engineer or surveyor to commit to oversee
installation of all storm water management and erosion control
features shown on the approved plans, and to certify over the
professional seal of the registered professional engineer or
surveyor that the "as built" conditions substantially conform with
the approved plans. This certification shall not release the
subdivider from the responsibility to construct in accordance
with approved plans until town and County inspections have
been made, and approval of "as built" conditions has been given
by the public agencies;
1
,
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18.16(D)(6) Roads shall be designed and constructed in accordance with sec.
• - . ,. . - , . . . the following
d standards for r € ivogwo
town roads and private roads which provide access <
(a) Design and related :.. <:. :.::: ::.,: :. «:.
s to individual
lots:
2. 18" culverts, or as otherwise specified, with a minimum
cover of one foot to the top of the sand lift. All culverts
shall be galvanized, corrugated steel pipe, pipe arch,
plate, or reinforced concrete pipe in conformity with
American Association of State Highway Transportation
Officials' (AASHTO) specifications;
3. 3' to 5' ditch bottom;
4. 31' minimum road width before gravel or base course;
5. 27' road width after base course;
6. 22' surface excluding shoulders;
7. 2' shoulders;
8. 12" sub base of sand, measured after being compacted;
9. 6" base of crushed limestone or 7" base of Wisconsin
grade #2 gravel, measured after being compacted;
10. Decomposable material shall not be used in
construction;
11. Shoulder slopes of 3:1 on fills to 3' ; 2:1 maximum below
the top 3';
12. Fill slopes of 3:1 on fills to 3'; 2:1 maximum below top
3'
13. Back slopes 3:1 or flatter desirable ; 2:1 maximum.
See Appendix A.
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(b) Widths, radii and grades.
Arterial and Local Road, Driveway
Collector Public or Servin
Roads Private, Only One
Serving Lot
More Than
One Lot
Minimum Right -
of -Way width
in ft. 80 66 66
Minimum Radius
of Curvature in
ft. from
Centerline for
Deflections of
7° or More 300 200 100
Maximum Grade 8% 10% 12%
Maximum Grade
within 50 ft.
of "T' Inter
8ectiees the 2% 2% *2%
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(7) The Committee shall examine the design of roads and driveways to
assure that lots are laid out in a way that will produce intersections,
grades and other features satisfying the following standards:
(a) The intersection angle of a driveway to a road, and a road to a
road, shall not be less than 75 degrees;
(b) The Committee may require intersection vision clearances;
(c) The elevation of the centerline of a driveway within 50 feet of
a road right of way shall not bc more than 1 ft. above or below
thc road elevation;
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