HomeMy WebLinkAboutRIGDEN FARM, 12TH FILING - PDP - 56-98AN - SUBMITTAL DOCUMENTS - ROUND 1 - TRAFFIC STUDYSITE GENERATED PEAK HOUR TRAFFIC Figure 3
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SITE LOCATION Figure 1
the nature of the residential land uses (some senior housing) along
Kansas Drive, it is expected that it will carry traffic volumes in the
range of 500-700 per day. The first garages, within the proposed
development, are 32 feet from the flowlines of Iowa Drive and Kansas
Drive. The driveways accessing Iowa Drive and Kansas Drive are expected
to have less than 100 vehicle trips per day. Applying Figure 19-6 from
the "Larimer County Urban ,Area Street Standards," indicates that a
setback of 40 feet is required from the flowlines on Iowa Drive and
Kansas Drive to the first garage. The site plan indicates that the 40
foot dimension can not be achieved. This will require a variance request
for this standard. The primary reason for the setback is so a vehicle
backing from a garage will not cause a delay such that a queue into the
public street (Iowa Drive or Kansas Drive) will occur. The
backing/unparking maneuver takes less than 30 seconds to execute. The
critical time period is the afternoon peak hour when the highest number
of entering vehicles will occur. The following analysis assumes that 25%
of the ingressing vehicles will utilize one driveway, resulting in 6
vehicles in the peak hour. Assuming a conservative peak hour factor of
0.5, all vehicles enter in a half hour period. This results in one
vehicle every 5.0 minutes. Given this conservative analysis, the
probability of more than one vehicle entering a given driveway during a
backing/unparking maneuver is very small. Even if all vehicles entered
in a 15 minute period, the probability that more than one vehicle
entering a given driveway during a backing/unparking maneuver would be
very small. It is concluded that the variance will not be detrimental to
the public health, welfare, and safety. A variance letter has been
submitted to the City of Fort Collins which addresses the 32 foot
dimension.
It is concluded that the Brooklyn Park Rowhouses at Rigden Farm will
generate similar traffic as that analyzed in the cited transportation
impact study. Therefore, the forecasted operation of the key
intersections and the geometry necessary to serve the Rigden Farm
development, as reported, is adequately addressed. This proposed
development is consistent with the previously approved development at
Rigden Farm. No further transportation analyses are required at this
time.
TABLE 1
Trip Generation
Code
Use
size
AWDTE
I AM Peak Hour
PM Peek Rout
Rafe
Trips
Rafe
In
Raft
out
Rate
In
Rafe
out
230
1 Brooklyn Park Rowhouses
63 DU
1 5.86
370
0.07
4
0.37
23
0.35
22
0.17
11
DELICH ASSOCI TES Traffic & Transportation Engineering
2272 Glen Haven Drive Loveland, Colorado 80538
Phone: (970) 669-2061 Fax: (970) 669-5034 �, r
PP�p REC,�ST�
TO: Scott Hearne, Hearne Construction
Troy Jones, MTA
City of Fort Collins Staff
FROM: Matt Delich
DATE: November 21, 2006
SUBJECT: Brooklyn Park Rowhouses at Rigden Farm transportation study
(File: 06113ME01)
The Brooklyn Park Rowhouses at Rigden Farm is a townhome
residential development proposed in the parcel in the northeast quadrant
of the Custer/Iowa intersection. Figure 1 shows the location of this
parcel within the Rigden Farm area. Brooklyn Park Rowhouses at Rigden
Farm is within Parcel G of Phase A in the original Rigden Farm Overall
Development Plan (circa 1999). Figure 2 shows a site plan of the
Brooklyn Park Rowhouses at Rigden Farm. The site plan shows two access
driveways to Iowa Drive and two access driveways to Kansas Drive. Iowa
Drive is classified as a commercial local street north of Custer Drive.
Kansas Drive is classified as a local street north of Custer drive. The
"Rigden Farm Transportation Impact Study," January 1999 addressed the
transportation impacts of the overall development. A comparison of the
trip generation was requested by the City staff. Alternative modes
analysis was provided for the Rigden Farm development; therefore,
additional alternative mode analysis is not required.
In the cited Rigden Farm TIS, Parcel G within Phase A of Rigden Farm
contained 44 apartment dwelling units. From Table 2 of the cited TIS,
this parcel was expected to generate 292 daily trip ends, 23 morning peak
hour trip ends, and 27 afternoon peak hour trip ends.
The Brooklyn Park Rowhouses at Rigden Farm is proposed to have 63
townhome dwelling units. The calculated trip generation is provided in
Table 1. Using Trip Generation, 7th Edition, ITE as the reference
document, this parcel is expected to generate approximately 370 daily
trip ends, 27 morning peak hour trip ends, and 33 afternoon peak hour
trip ends. The trip generation of the current proposal will be slightly
higher than that considered in the "Rigden Farm Transportation Impact
Study" for the same land area.
The Brooklyn Park Rowhouses at Rigden Farm 'is proposing to have two
driveway accesses to Iowa Drive and two driveway accesses to Kansas Drive
as shown in Figure 2. Figure 3 shows the assignment of the site
generated peak hour traffic at the site access intersections. Iowa Drive
will likely have approximately 2000 vehicle trip per day, since the
parcel on the west side is proposed to have commercial land uses. Given