Contra Costa County Seal

Contra Costa County
Community Development Department
Redevelopment Division
The Pleasant Hill BART
Station Design Charrette

TRAFFIC VOLUMES FOR 1997, 2001 AND 2010 

Fehr & Peers Associates, Inc. 

The traffic volumes shown on the attached figures represent actual counts and projections for the year 2010.  For Figure 1, the peak hour traffic volumes noted as “1997”are from counts reported in the Traffic Study for the Pleasant Hill BART Station Area Specific Plan Environmental Impact Report, 1997.  The volumes noted as “2001” are field counts conducted in 2001.  The volumes noted for “2010” are projections from the 1997 EIR Traffic Study for the Base Case with the Scenario 1 Project volumes included.  For Figure 2, the estimated trips generated by the “final” plan from the Charrette were added to the 2001 counts.

It should be noted that all but two of the 2001 counts are higher than the counts from the 1997 Traffic Study.  The increases in the counts appear reasonable and are considerably less than the 2010 projections.  The two 2001 counts that are lower than the 1997 Traffic Study counts are p.m. peak hour counts on Treat Boulevard between I-680 and Jones Road.  There are a number of reasons for this apparent discrepancy.  It should be noted that traffic volumes vary on a daily, weekly, monthly and seasonal basis.  Throughout the year, counts vary as much as 10 percent or more, some times from one day to the next.  Therefore, these counts should be seen as an indication of the changes in traffic volumes.  Factors that may have affected the counts include construction and new development and new street patterns in the project area, the major reconstruction of the I-680 / State Route 24 interchange, and other construction in the general area, including the extension of BART to Bay Point and construction along State Route 4.

The volumes shown in Figure 2 for 2001 are the actual field counts added to the trips that would be generated by the “final” plan from the Charrette held on February 22 - 25, 2001.  The land use for this plan consists of 411,200 square feet of office, 40,300 square feet of retail and 345 (or 370) apartments.  The trip generation from these uses (with 370 apartments) results in 6,414 daily trips, with 634 trips during the a.m. peak hour and 749 trips during the p.m. peak hour.  These trips were assigned to the roadway network based on the directional trip distribution percentages from the 1997 Traffic Study.

As shown in Figure 2, the 2001 volumes with the “final” project trips added are slightly higher than the volumes from the 1997 Traffic Study and substantially lower than the 2010 projections from the Traffic Study.

1001-1657

March 2001

tjc 

 

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