|
 MUNI Metro Turnback Project - San Francisco, CA Posted by:  DougK
N 37° 47.523 W 122° 23.455
10S E 553626 N 4182917
In 1998, the MUNI Metro Turnback Project received an Award of Merit from the ACSE. It is largely an invisible project, being underground, with just the tunnel entrances being visible..
Waymark Code: WMH7ER
Location: California, United States
Date Posted: 06/03/2013
Views: 7
The MUNI Metro Turnback Project is an underground project in downtown San Francisco that enables trolley cars to be stored and turned around. It is a switching facility and storage tracks under the Embarcadero, a kind of underground train terminal and yard.
From the Wong Engineering website:
Wong was responsible for systems design and construction management of the $120 million Muni Metro Turnback (MMT) LRT Project. The MMT extends Muni Metro Light Rail Transit Line underground approximately one mile from Embarcadero Station to a tunnel portal connecting to the Mission Bay surface line. The MMT Project includes 800 ft of bored tunnel, cut-and-cover structure, and an extensive underground turnback complex with two pocket tracks. The MMT improves turnback operations, reduces headways, and provides underground train storage, thus enabling Muni to significantly increase system capacity.
The MMT systems include traction power distribution and overhead contact system, gap breaker stations, train control, communications, and tunnel ventilation fans with associated electrical power distribution and control systems. A CCTV system enables monitoring of the tunnel portal and operations within the Turnback structure. The tunnel ventilation system consists of a new ventilation structure with three 450 hp fans, additional ventilation fans at Embarcadero Station, and a microprocessor-based fan control system.
An essential part of the Project is the installation of a new fiber optic communications backbone system extending 6 miles in existing underground tunnels from the MMT to Muni Central Control. Modifications at Central Control provide for monitoring and control of the MMT ventilation fans, communications, train control, and communications systems.
Location:
Along The embarcadero at Howard Street
Type of structure/site: Underground Railway
Date of Construction: 1997
Engineer/Architect/Builder etc.: PGH Wong Engineering, Inc. / Tutor-Saliba Contractors
Engineering Organization Listing: American Society of Civil Engineers
Primary Web Site: [Web Link]
Secondary Web Site: [Web Link]
|
Visit Instructions:
The listed coordinates for this waymark must be personally visited.
Please submit at least one ORIGINAL PHOTO of the structure, preferably one showing a different aspect, angle, season, etc. from the original waymark.
Give the DATE of your visit and any comments or additional information that will help other visitors enjoy this site.
Recent Visits/Logs:
| There are no logs for this waymark yet. |
|
|
|
|