The purpose of this Phase II report is to provide information in a consistent, comparable format on a range of alternative means of providing for the travel demand in the I-90 corridor across Lake Washington. The Phase I report study of withdraw and substitution alternatives presented 47 mass transit projects for the Seattle/King County area which were eligible for federal-aid funding as substitutes for Interstate 90 across Lake Washington. This report presents eight alternatives; all alternatives are developed in the general context of the region's adopted 1990 Transportation Systems Plan. This means that nearly all data in this report is based upon forecasts of travel conditions in the year 1990. This report presents data on a range of alternatives for serving cross-lake travel, including guideway transit systems, bus transit improvements, and combinations of bus/highway improvements. Current federal laws and regulations regarding Interstate withdrawal and substitution are discussed so as to point out consequences of these laws and regulations for decisions on I-90. Other major areas reviewed are: 1) Land use and regional development; 2) Transportation system performance; 3) Economic and fiscal feasibility; 4) Environmental impacts; and 5) Social impacts. The PSCOG makes no recommendations in this report concerning a final solution of cross-lake travel questions. The data serves to inform and to facilitate dialogue concerning the alternatives so that a consensus among responsible local officials and the concerned public may ultimately be reached. /FHWA/

  • Supplemental Notes:
    • Sponsored by the Urban Mass Transportation Administration, DOT.
  • Corporate Authors:

    Puget Sound Governmental Conference

    Puget Sound Council of Governments, 216 1st Avenue
    Seattle, WA  United States  98104
  • Publication Date: 1975-12

Media Info

  • Pagination: 142 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00165765
  • Record Type: Publication
  • Source Agency: Urban Mass Transportation Administration
  • Report/Paper Numbers: UMTA-WA-09-0010-77-2
  • Contract Numbers: WA-09-0010
  • Files: TRIS, USDOT
  • Created Date: Mar 29 1978 12:00AM