13 ATTACHMENT 11 - Laserfiche WebLink

Josh Pack P P November 10, 2009 Page of FFFI1: & PEER\ IAAYSTOY,ATi OK COXSVI,AM,S Although vehicle queues and vehicle lane changing movements can be minimized though traffic signal operations and additional signage directing vehicles to the proper lane with construction of the Proposed Project and minimal growth in background traffic through the near -term condition, the construction of a second receiving lane on the northbound 1 -680 on -ramp and conversion of a westbound through lane to a through -right shared lane would minimize many of the Bernal Avenue corridor operational deficiencies. Although this improvement is not required on opening day of the Gateway Retail Center, the Project Applicant and City should begin discussions with Caltrans to implement this improvement. CONCLUSIONS The results of this assessment show that the proposed Gateway retail center would generate significantly less traffic than the combined retail /office project, eliminating the need for the second receiving lane on the 1 -680 northbound on -ramp based on the intersection levels of service results. However, there would be some periodic vehicle queue spillback on Bernal Avenue. The effects of vehicle queue spillback and lane changing maneuvers can be partially mitigated through signal timing and additional signage to direct vehicles to the proper lane; the construction of a second receiving lane on the northbound 1 -680 on -ramp and conversion of a westbound through lane to a through -right shared lane would minimize many of the Bernal Avenue corridor operational deficiencies. Although this improvement is not required on opening day of the Gateway Retail Center, the Project Applicant and City should begin discussions with Caltrans to implement this improvement. Please call Kathrin if you have any questions. Attachments: Figure 1 Project Trip Distribution Figure 2 Near -term With Modified Project Mitigated Lane Configurations, Traffic Control, and Peak Hour Traffic Volumes