HomeMy WebLinkAboutMAPLE HILL, PHASE ONE - PDP - 29-00A - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYAPPENDIX A
Chapter 7 — STREET DESIGN AND TECHNICAL CRITERIA
Section 7.4 General Design Elements
Tahla 7.3
Larlmer County Urban Area Street Standards — Repealed and Reenacted October 1, 2002
Adopted by Larlmer County, City of Loveland, City of Fort Collins
Page 7-7
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APPENDIX B
From the available lotting plan for the Gillespie Farm, there are
single family lots along the minor collector streets. The typical lot
width is 50 feet with some wider lots on corners. The corner clearance
for minor collector streets is 100 feet. There will be a few locations
along the two N/S collector streets that will not meet this corner:
clearance. The lot widths are dictated by the density requirement in
"City Plan." It is only the end lots along the N/S minor collector
streets at the local street intersections that cannot meet the minimum
corner clearance standard. Single family detached dwelling units generate
approximately 10 trip ends per day and one trip end in the respective peak
hours. In the morning peak hour, the trip end is an exit from a driveway.
In the afternoon peak hour, the trip end is an entrance to a driveway. As
was demonstrated in a previous memorandum (10/12/01), daily traffic
volumes on the two collector streets that bisect the Gillespie Farm ODP
will be less than 1000 vehicles per day (vpd). Daily traffic volumes on
the eastern minor collector street will range from 3300 to 1600 vpd.
Daily traffic volumes on the local streets will generally be less than 300
vpd. Traffic in the peak hours on these streets will be intermittent and
low. On the bisecting collector streets, the average gaps between
vehicles will be greater than 35 seconds. The probability of conflicts
at/near these intersections will be minimal. Driveways should be located
as far away from all of the subject intersections as possible. It is not
likely that there will be more than a one vehicle queue at any of the
subject intersections. Therefore, no driveway should be blocked by a
vehicle on the street. As such, with reasonable driver prudence, the
corner clearance variance is not detrimental the public health, welfare,
and safety.
There are a few locations at the intersections of the collector
streets where lots are designed to be wider. Where the driveway will be
located on the smaller dimensional side of those lots, the driveways must
be located at the property line. This will meet the, corner clearance
criteria.
Some end lots at the intersections of two local streets are intended
to have a duplex residential product. It is also desired that the
driveways to this duplex product be from both local streets. Based upon
review of available site plans, this will be possible while still meeting
the 50 foot minimum corner clearance for a local residential street.
In conclusion, I believe that the variances to the intersection
spacing and the minimum corner clearance between driveways and street
intersections:
Are not detrimental to the public health, welfare, and safety,
Have no impact on the capital/maintenance requirements and costs.
Thank you for your consideration of these variance requests.
Sincerely,
Matthew .3. Delich, P.E.
cc Eric Bracke
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November 12, 2002 1\'
Mr. Mike Herzig, P.E.
Fort Collins Engineering Department
P.O. Box 580
Fort Collins, CO 80522-0580
Dear Mike:
File: 0190LT02
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NOV 1 4 2002
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This letter was prepared for the .-Gillespie Farm ODP to request
variances to "Section 7.4 General Design Elements, Table 7-3, Access
Management," as contained in the Larimer County Urban Area Street
Standards (LCUASS), October 1, 2002. Specifically, the variances
pertain to unsignalized intersection spacing and corner clearance
between driveways/alleys and street intersections. A copy of Table
7-3 is provided in Appendix A. The Gillespie Farm site plan is
provided in Appendix B.
No driveways intersect with CR11 or CR52 (both R"knV"
arterials). The minimum intersection spacing along minor arterials
is 460 feet. The range of separation is 460-660 feet. There will
not be raised medians along either CR11 or CR52. The intersection
spacing exceeds 460 feet. There are two locations on CR11 and one
location on CR52, where the 660 _foot_ separation,_.is...exGepded. None
of these locations will be detrimental to public health, welfare,
and safety. They will also not have an impact on the capital/
maintenance requirements and costs.
The Gillespie Farm has an east/west 'collector street and a
north/south collector street that bisect the site. In addition,
there is a north/south collector street near the east edge of the
site. All of these are designated as minor -collectors. The minimum
separation between intersections for a minor collector is 250 feet.
There are four locations along the central N/S collector and two
locations along the east N/S collector that are 'less than 250 feet.
These locations are labeled A, B, C, D, E, and F on the site 'plan
shown in Appendix B. Four of these locations (A,D,E,F) are at
Z intersections' that are, on the edges of the site (CR50E and CR52)
w At the intersections with CR50E and CR52, the separate left -turn
z lanes are not required but may be striped as such, if that is the
z "desire of the City. The variance regarding intersection spacing
W /&will not be detrimental .to the public health, welfare, and safety;
pG'�. „ nor will it have an impact .on the capital/maintenance requirements
_... _.
of the City.
a There are two other locations (B,C) along the central N/S
z collector where the separation is less than 250 feet (B-1901,C-
M J,� 2201). From the available site plan, this cannot be corrected
�_0" without making street location changes on the east or west sides of
the N/S collector. However, the intersection spacing is large
(�-L enough not to cause operational concerns. This spacing will not be
d detrimental to the public health, welfare, and safety; nor will it
oc
F.. have an impact on the capital/maintenance requirements of .the City.
A /Y 1