The freeway tunnel will be used as a goods movement corridor from the ports because most of the trucks in the study area come from the ports.
The vast majority of the trucks that travel within the study area are local trucks that are delivering merchandise to local businesses.
Cargo truck trips traveling to and from the Ports typically end/begin at the intermodal yards located in the area south of State Route 60 or in the Inland Empire.
SCAG estimates that over 92 percent of the trucks traveling in Los Angeles County are not Port-related trucks.
The entire length of tunnels will be constructed using cut and cover methods for both freeway and transit tunnels.
Only the approaches at either end of the freeway tunnel will be constructed using cut and cover methods.
The majority of freeway tunnel and LRT tunnel construction will utilize tunnel boring machines.
Cut and cover methods will be utilized for station construction for the LRT alternative.
The tunnel toll will cost $20 per trip (or similar).
The tunnel toll costs have not yet been evaluated. Given actual operations for similar type facilities, costs will likely vary by time of day (charging higher tolls in the peak periods).
Tolling will cause congestion on arterial streets.
Traffic volume in the tunnel will vary depending on toll pricing.
The tolled tunnel is expected to improve congestion on local streets by providing an alternative route for through trips.
The level of improvement will vary depending on the amount of the toll.
The tunnel is unsafe because there are no fire-life safety components in place.
The freeway tunnel emergency elements will adhere to state and local fire marshal requirements. These elements include:
- Emergency response systems
- Water suppression system
Additional safety elements that will be implemented include:
- No intermediate shafts
- Air scrubbers at each end of a freeway tunnel to treat Particulate Matter
- Catalytic converters for CO and NOx
- Prohibition of vehicles with flammable/hazardous cargo
Building a tunnel will not reduce congestion because it has been stated in a SCAG Study that traffic levels in the opening year will be at a failing level of service (LOS F).
Preliminary traffic analysis, for a dual bore tunnel facility, forecasts that during the opening year of operations, the level of service for traffic will be at LOS C.
In 2035, the level of service will be D or better. On a tolled freeway, good levels of service can be maintained by adjusting the toll, whether the freeway has two or four lanes in each direction.
The Study Team is only focused on the Freeway tunnel alternative
All alternatives are being studies with the same level of detail. The alternatives under consideration include:
- Transportation System Management/Transportation Demand Management
- Bus Rapid Transit
- Light Rail Transit
- Freeway Tunnel
The study team is considering multiple freeway alternatives.
The study team is evaluating ONE freeway alternative with operational variations. The variations include:
- No Tolls (dual bore)
- Tolls (2 or 4 lanes each direction, requiring single or dual bores)
- Tolls with Express Bus service (2 or 4 lanes each direction, requiring single or dual bores)
Note: All scenarios are being evaluated with and without trucks
The study team did not use site-specific data for evaluating air quality impacts.
The air quality evaluation in the Alternatives Analysis phase was conducted using established methodology using the closest regional data for screening.
The study findings to date are relevant and appropriate for the level of analysis completed during the Alternatives Analysis Phase of the study.
As we prepare the Draft Environmental Impact Report/Statement, a more detailed air quality analysis is being conducted.
PM2.5 and CO Hot Spot analysis will be performed during this phase.