16 - Laserfiche WebLink

Phase 6 upgrades all the separation from thermoplastic striping/flex posts to concrete separation islands, resulting in one-way separated bike lanes shown in Attachment 2. This design was modified in January 2022 to replace the separated bike lanes with elevated bike lanes. The elevated design eliminates collection of debris in the bike lane and may provide some additional construction cost savings by reducing the cross section of roadway that must be reconstructed. The elevated concept was brought to BPTC in January 2022. The committee liked the elevated bike lane design and requested that there be a clear separation between the pedestrian walking area and the bicycle area. Figure 8 shows examples of an elevated bike lane. 1 111411Vi ' ' . '11 111'''; '-' , . 111111 ,.. ...q.17 ,*;:i.v. '-, iii,t -' l 1 illIw �� r� 24;...:...,,-".� , . % 1111_ d , x 4,411.,„ ,... , .. ; . Ma% .- Figure 8 — Elevated Bikeway Examples (Boston, MA) The overall cost of this elevated bike lane design in comparison to the cost of concrete separation island design will be reviewed as part of the West Las Positas Reconstruction project. Phase 1 is fully designed and ready for advertisement. The detailed design of the West las Positas Bicycle and Pedestrian Corridor Improvement Plan is also scheduled to begin later this year as part of the West Las Positas Multimodal Reconstruction Design project, with a professional services agreement for design services soon to be brought to City Council for approval. Lane Reductions West Las Positas Boulevard today includes a variety of profiles, including segments with one-lane, two lanes and three lanes in each direction. The West Las Positas Corridor Improvement Plan recommends a uniform lane profile of two through lanes in each direction on West Las Positas Boulevard, except for the segments from Foothill Road to just east of Payne Road which are recommended to retain their one-lane per direction design. Page 12 of 14