Embedded Files
Design
Design
Design Type L-7 consists of two off-ramps and two entrance loop ramps. We used figures 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-7 (Source: Caltrans Highway Design Manual Chapter 500 - July 1, 2020)
Top left: North bound loop for proposed DTM. Bottom Left: Palm Ave proposed DTM.
Right: Complete L-7 proposed DTM.
Left Top: North bound off ramp proposed DTM. Left Bottom: South bound off ramp proposed DTM.
Right: South bound on ramps
Vertical Alignment
Vertical Alignment
Design Type L-7 consists of two off-ramps and two entrance loop ramps. We used figures 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-7 (Source: Caltrans Highway Design Manual Chapter 500 - July 1, 2020). Click the drop down link below for full 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 %
Vertical Alignment Documents
Vertical Alignment Documents
North Bound Vertical Alignment
North Bound Vertical Alignment
North bound on ramp vertical alignment.
North bound off ramp vertical alignment.
South Bound Vertical Alignment
South Bound Vertical Alignment
South bound on ramp vertical alignment.
South bound off ramp vertical alignment.
Cross Sections
Cross Sections
Detailed cross sections of I-215, Palm Ave, on/of ramps, and loop ramps.
Simulations
Simulations
Synchro
Synchro
Synchro AM Peak Hour Simulation
Synchro AM Peak Hour Simulation
Synchro PM Peak Hour Simulation
Synchro PM Peak Hour Simulation
Go to Technical Team for more information.
VISSIM
VISSIM
VISSIM AM Peak Hour Simulation
VISSIM AM Peak Hour Simulation
VISSIM PM Peak Hour Simulation
VISSIM PM Peak Hour Simulation
Ramp Metering
Ramp Metering
The 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.
Drainage Design
Drainage Design
Type L-7 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.
Drainage design plan sheet for North bound ramps.
Drainage design plan sheet for North bound ramps.
Drainage design plan sheet for the overall design.
Drainage design plan sheet for the overall design.
Drainage design plan sheet for South bound ramps.
Drainage design plan sheet for South bound ramps.
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-7 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.
Overall temporary water pollution control sheet.
Overall temporary water pollution control sheet.
Traffic Control Plan
Traffic Control Plan
Cutsheet 5.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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