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Show No Action and Compact Development Emphasis Scenarios. These share the same assumptions about the transportation network: • No substantial increases in highway capacity • No substantial increases in public transportation service • No new transportation demand management programs • The networks are based on existing funded improvements Highway Emphasis Scenario. This scenario assumes a major highway program. This scenario assumes an investment of from 5 to 10 billion dollars. Highway lanes were added on major roadways in the metropolitan areas and on 1-5 and some other intercity highways, subject to some constraints on the total number of lanesl Capacity was added incrementally in 2010, 2020, 2030 and 2040. Under this scenario, by 20406: • 1-5 from Wilsonville to ORE 217 would have 10 lanes. • The ring roads around Portland (1-205, OR 217, US 26 (west) would have 8 to 10 lanes. • Many other state highways in the Portland metropolitan area would have 6 lanes • 1-5 in Eugene and Salem would have 8 lanes and other limited access highways in these cities would have 6 lanes • 1-5 between Wilsonville and Salem would have 8 lanes • 1-5 between Salem and Eugene would have 6 lanes • The Tualatin-Sherwood Connector and the Newberg Bypass would be built, and several portions of rural two-lane highways would be widened to 4 lanes. Transit Emphasis Scenario. This scenario assumes a major investment in public transportation. It was developed from several planning documents including th&1992 Oregon Rail Passenger Policy and Plan, the Yamhill County Commuter Rail Study, the Washington County Commuter Rail Study, various public informational materials about planned bus rapid transit lines in the Eugene/Springfield metropolitan area, and planning information from Metro about light rail lines studied as part of the Metro area 2040 growth study. The transit network alterations were made in 2010, 2020 and 2035. The estimated costs of these improvements would be from $5 to 10 billion. Under this scenario, by 2035: • The light rail system in the Portland metropolitan area would include the planned airport extension and additional rail lines from downtown Portland to Clark County, Clackamas Town Center and Washington Square. They would also include rail lines along Oregon Route 217 and 1-205 and from 1-5 to 1-205 in Clark County. • The bus rapid transit system in the Eugene/Springfield area would be fully developed. This would include almost 60 miles of bus rapid transit facilities covering most of the metropolitan area. • Passenger rail service up and down the Willamette Valley would have hourly service at average speeds of about 55 miles per hour. 5 The assumed lane constraints were 10 lanes for freeways in metropolitan areas, 8 lanes for freeways outside of metropolitan areas, and 6 lanes for all other highways. 6 2035 was used for the latest year because the effects of transportation on land use patterns take time to develop. Improvements in later years would affect ridership and congestion levels but would have much less effect on the distribution of activities. Modeling Analysis of Willamette Valley 6 June 2001 Transportation/Land Use Alternatives |
