Embedded Files
Design
Design
Design Type L-9 consists of two on-ramps, two off-ramps, and two entrance loop ramps. We used figures 504.2A Single Lane Freeway Entrance, 504.2B Single Lane Freeway Exit, and 504.3D Restrictive Condition Freeway Entrance Loop Ramp Metering (1 GP Lane) to make the layout design type L-9 (Source: Caltrans Highway Design Manual Chapter 500 - July 1, 2020)
Top left: Both Loops for proposed DTM. Bottom Left: Palm Ave proposed DTM.
Right: Complete L-9 proposed DTM.
Left Top: East bound off ramp proposed DTM. Left Bottom: West bound on ramp proposed DTM.
Right: Combined persective of shown on and off ramps
Vertical Alignment
Vertical Alignment
Design Type L-9 consists of two on-ramps, two off-ramps, and two entrance loop ramps. We used figures 504.2A Single Lane Freeway Entrance, 504.2B Single Lane Freeway Exit, and 504.3D Restrictive Condition Freeway Entrance Loop Ramp Metering (1 GP Lane) to make the layout design type L-9 (Source: Caltrans Highway Design Manual Chapter 500 - July 1, 2020). Click the link below for drawings.
Mainline vertical alignment.
Vertical clearance for the freeway shall be 18.5 ft above the local street. Minimum grades should be 0.3 percent at non snow locations.
Using Caltrans HDM Table 204.3 for level terrain and urban highways, grade for vertical alignment is in range of 0.3 to 6 %
Local Street Palm Ave Vertical Alignment
Local Street Palm Ave Vertical Alignment
Palm Avenue vertical alignment.
East Bound Vertical Alignment
East Bound Vertical Alignment
East bound on ramp vertical alignment.
East bound loop ramp vertical alignment.
East bound off ramp vertical alignment.
West Bound Vertical Alignment
West Bound Vertical Alignment
West bound on ramp vertical alignment.
West bound loop ramp vertical alignment.
West bound off ramp vertical alignment.
L-9 Cross Sections.pdfCross Sections
Cross Sections
Detailed cross sections of I-215, Palm Ave, on/of ramps, and loop ramps.
Simulations
Simulations
Synchro AM Simulation
Synchro PM Simulation
Synchro PM Simulation
VISSIM
VISSIM
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Ramp Metering
Ramp Metering
Ramp Metering Sheet-WB On & Loop Ramp.pdfThe design of ramp metering system for west bound on ramp and west bound loop is based on Caltrans Ramp Metering Design Manual. They will both have a pull box, signal controller cabinet, luminaire, and a signal head.
West bound one-ramp will consist of three demand detectors, one passage detector, four mainline detectors, and one queue detector.
Similarly, to the design of the westbound on-ramp, the loop will also have one queue detector, three demand detectors, four mainline detectors, and one passage detector.
Traffic signal design
Drainage Design
Drainage Design
Type L-9 West Bound On-Ramp drainage design has a total of 4 drainage subareas with each marked with the drainage system ID. The area and longitudinal slope of each subarea can be seen in the data collection table. The design plan shows the water flow direction, subarea boundary, as well as the inlets.
DRAGINAGE DESIGN PLAN SHEET-WB On Ramp.pdfDrainage design plan sheet for west bound on ramp.
Drainage design plan sheet for west bound on ramp.
Drainage Design WBLOOP.pdfDrainage design plan sheet for west bound loop ramp.
Drainage design plan sheet for west bound loop ramp.
Drainage Design WBOFF.pdfDrainage design plan sheet for west bound off ramp.
Drainage design plan sheet for west bound off ramp.
Flood Zone Documentation
Flood Zone Documentation
Inlet Documents
Inlet Documents
Temporary Water Pollution Control Plans
Temporary Water Pollution Control Plans
West bound on-ramp temporary water pollution control plan for Type L-9 interchange has a stabilized construction entrance/exit surrounded by fiber rolls and wood mulching. It was designed to have 4 storm drain inlets evenly spaced on the ramp.
Updated WPCP WBLOOP.pdfPalm Ave West bound on ramp loop
Palm Ave West bound on ramp loop
Updated WPCP WBOFF.pdfI-215 to Palm Ave off ramp
I-215 to Palm Ave off ramp
Water Pollution Control Plan_WB On Ramp (Updated).pdfPalm Ave west on ramp
Palm Ave west on ramp
Traffic Control Plan
Traffic Control Plan
L-9 Construction Area Signs Plan.pdfThis document is the overview of the traffic control plan during construction. Listed below are more detailed drawings of each section.
This document is the overview of the traffic control plan during construction. Listed below are more detailed drawings of each section.
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