November 21, 1996

To: Lawrence D. Huges
Acting County Executive

From: Robert W. Wilson
Director of Public Works

Re: Western Transportation Corridor Study (WTCS)

The following is a brief comparison of traffic volumes for the various alternatives analyzed in the WTCS. The volumes are based on the Council of Governments Round 5.3 cooperative forecasts for the year 2020. They are summarized in Attachment A. The traffic volumes are taken directly from the VDOT analysis on key links throughout Prince William County. Locations of the links are depicted on Attachment B.

- Prince William Parkway west of I-95 - There is no significant difference between any of the alternatives. The volumes range from a low of 56,350 vehicles per day to a high of 57,100 vpd.

- Dale Boulevard west of I-95 - There is no significant difference between any of the alternatives. The volumes range from 52,720 vpd to 53,900 vpd.

- Route 234 west of I-95 - There is no significant difference between any of the alternatives. The volumes range from 22,000 to 26,270 vpd.

- Route 234 Bypass south of I-66 - The volumes change significantly if Alternative s E, F, K, or L are chosen. These alternatives assume the use of this link as part of the new facility. This would put a range of between 52,980 vpd and 55,100 vdp on this link. There are not significant differences between the remaining alternatives.

- Route 15 north of Route 29 - The volumes change significantly if alternative A, B, G, or H are chosen. These alternatives assume the use of this link as part of a new facility. This would put a range of between 54,590 vpd and 59,800 vpd on this link. There are no significant difference in the remaining scenarios with volumes ranging from 11,060 to 11,180 vpd.

- Route 619 south of Route 29 - The volumes range from 10,000 to 15,460.

These volumes were extracted directly from the VDOT analysis. Staff will be preparing a more thorough staff analysis for your review in preparation for the Board work session on December 3. If you should have any questions in this regard, please give me a call.

CC: Transportation Division Chief

Ed Note: "Any of the alternatives" includes the no build alternative.

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