The project design concept has been developed based on earlier plans, 2016 community feedback, current pedestrian/bicycle design practices and available budget. SW Capitol Highway between Garden Home Road and Taylors Ferry Road will be reconstructed with the following features:
- Continuous sidewalk on the east side of the road. Community feedback revealed a preference for the east side of the roadway because people walk there today on an informal pathway leading to the Multnomah viaduct.
- Protected bike lane on the east side of the road. The volumes and speeds of vehicles on SW Capitol Highway, and the desire to attract cyclists with a broad range of comfort levels, calls for a bike lane that is separated from the roadway by a curb and planter strip. Careful design will address bike lane crossings at streets and driveways.
- Multi-use path on the west side of the road. To reduce project costs and property impacts on the steeper west side of the roadway, a shared path will accommodate southbound biking and bi-directional walking.
- Pedestrian crossings. PBOT is working with TriMet to consolidate stop locations for the #44 bus and to improve pedestrian crossings at those locations.
- Stormwater improvements. The project will construct facilities to manage runoff from existing and new roadway surfaces. Portland Bureau of Environmental Services is a key partner on this project and is designing a multi-faceted stormwater management system.
- Two small pockets of on-street parking where properties have no other option for vehicle parking – one north of Alice Street on the east side of the roadway; another south of Baird Street on the west side.
- Context-sensitive design to reduce impacts to property frontages and mature, healthy trees.
Preferred Cross Section
The typical preferred cross section is pictured below. This cross section fits within available right-of-way, which is typically 60 feet wide. However, actual widths of features will vary throughout the corridor based on context, with this cross section as a starting point. For example, the pedestrian and bicycle facilities may move closer to the road in places to avoid identified large trees.
Plan View Layout
PBOT has prepared an initial “plan view” layout of the preferred cross section as it applies to the full project corridor. This first cut allows the design team to determine necessary refinements related to topography, mature trees, intersections, driveways, utilities and stormwater management. In the layout linked below, the only refinements that have been made are to narrow the footprint of the pedestrian/bicycle facilities near large trees that were identified in the 2011 Capitol Highway Plan Refinement Report. The next step is to proceed with grading design based on this concept, which will create a feedback loop of refinements as the design team approaches 30% design. Intersection treatments of the pedestrian/bicycle features are likely to change compared to what is shown in the initial layout. PBOT also is coordinating with Portland Bureau of Environmental Services to develop an initial stormwater concept design based on elements included in the 2016 Capitol Highway Corridor Stormwater Concept Design.