TrafficCity of Yelm
Morris Road Commercial Site
Leve I 1 TIA
January 2005
Prepared by SCA Consulting Group
Robert E. Holcomb, P.E.
Transportation Department Manager
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Level I TIA
Morris Road Commercial
I. Introduction - R.E. Paigen Construction is proposing development of a 0.71 acre
site with a 6,955 square foot commercial building with 28 parking stalls in
southeast portion of Yelm.
II. Proposed Development -The proposal consists of developing a 0.71 acre site
with a 6,955 square foot commercial building and 28 parking stalls. The site is
located along Morris Road and Bald Hills Road near the five corners intersection,
in section 29, Township 17 N., Range 2 E. (see Figure 1 vicinity map.) The
zoning of the property is C-2. (see Figure 2 site plan.) The project is proposed in
one phase.
III. Existing Conditions -The study area of this TIA is very localized and includes a
site distribution at the Morris Road/Bald Hills intersection and the five corners
intersection. The zoning in this area is C-2 and surrounding properties are
generally residential in nature to the west and south and commercial in nature to
the north and east.
Site accessibility to the subject is via Morris Road to Bald Hills Road and to the
five corners intersection. Morris Road and Bald Hills Road are commercial
collector streets. It is anticipated most traffic to and from the site will through the
five corners intersection to SR 507 and into Yelm.
There is no formal public transit service available to this area and
pedestrian bicycle facilities are limited and generally use the existing driving
surface or shoulders.
IV. Trip Generation & Distribution -Vehicle trip generation was calculated for
this project using the 6th Edition of the Trip Generation report by the Institute of
Transportation Engineers (ITE). The specialty retail land use (code 814) was
determined to be the most applicable to this site. The trip generation rate used for
this analysis is shown below:
PM Peak Hour Trip Rate = 2.59 per 1,000 square feet of gross floor area.
6,955 square feet proposed =(2.59)(6.955) = 18 PM peak hour trips.
Inbound traffic = 43% = 8 inbound trips.
Outbound traffic = 57% = 10 outbound trips.
The vehicle directional trip distribution to and from the site will be based
primarily on the following:
- The area street system characteristics,
- Current travel patterns on the area roadways,
- The proposed access system for the project, and
- Locations of residential areas, employment bases and shopping/commercial
centers.
Using the above criteria, a percentage of future site generated traffic was
distributed to the roadway network. Figure 3 shows the site traffic volumes
based on those distribution percentages.
V. Conclusion -Projected traffic from the proposed commercial development will
have a minimal impact to the area roadway network. 18 new PM peak hour trips
will be generated and there is no anticipated level of service drop. The level of
traffic generated by this project falls well below thresholds for a Level II analysis
for projects within the City of Yelm and therefore, this report should be sufficient
to satisfy the appropriate environmental review of the project.
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