Ramp Metering. Ramp meters have been considered in the SR-11 design. Where toll collection facilities are not placed, costs for ramp metering equipment and installation have been accounted for. The location is assumed to be on the SR-11 eastbound on-ramp of the Xxxxxx Xxxxx Drive Interchange.
Ramp Metering. Ramp metering exists within the project limits and would stay operational during construction of the Project. Additional ramp metering improvements are not proposed.
Ramp Metering. Ramp metering is included for the interchange on-ramps with HOV preferential lanes. In the letter provided in Attachment J, the City of Xxxxx has documented that it supports the implementation of ramp metering and accepts that some ramp queues may extend onto the Mountain House/International Parkway dedicated turn lanes during peak hour periods. CHP Enforcement CHP enforcement areas will be included for the interchange on-ramps. Highway Planting Existing highway planting and irrigation systems that are removed during construction will be replaced in accordance with Caltrans standards. Replacement design will consider safety, maintenance, and general compatibility with aesthetics in the adjacent community. Where Best Management Practice (BMP) features will be established, existing planting may be replaced with new species and filtration devices. Highway planting and irrigation design will be developed further in the Plans, Specifications, and Estimates (PS&E) phase.
Ramp Metering. Ramp metering will be established at the entrances to the Bay Bridge from the Yerba Buena Island ramps and will operate during periods of congestion to manage ramp volumes. Ramp metering is flexible and can be adjusted easily to meet the objectives of the Transportation Plan.
Ramp Metering. The project proposes to install ramp metering and provide Maintenance Vehicle Pullouts (MVP) at WB-80 Loop Onramp from West Capitol Avenue, WB-50 Onramp from Jefferson Boulevard, and WB-50 Onramp from State Route 275. An Exception to Ramp Metering Policy was approved for these ramps since widening for an HOV preferential lane and California Highway Patrol (CHP) Enforcement Areas are not provided. The WB-80 Slip Onramp from West Capitol Avenue will be metered and widened to provide an HOV preferential lane and MVP. There is enough shoulder pavement to provide for a CHP Enforcement Area at this location. A Design Standard Decision Document will be prepared for this ramp due to the exclusion of the auxiliary lane after the ramp convergence point. Railroad Involvement The PSSR included median widening on I-80 to facilitate staging of construction. The Lake Washington Overhead that spans over the Union Pacific Railroad (UPRR) was proposed to be widened in the median by constructing a bridge between the existing left and right structures. The proposal did not include improvements on the existing non-standard vertical clearance over the rail tracks and horizontal clearance to the UPPR right of way. The median widening proposal was presented to UPRR and discussed in the field with a UPRR representative on February 26, 2020. This proposal was rejected by UPRR. There were several alternatives that were analyzed and described below for Lake Washington Overhead with PID Level cost estimate (bridge only).
