Trolley Renewal Project




Rebuilding the Trolley System

Trolley Renewal is a $660 million project to rebuild the Orange and Blue Lines. Low-floor Trolleys are now operating on the entire MTS Trolley network, making trips faster, more comfortable and more convenient for all passengers.

With the low-floor Trolleys in operation, wheelchair lifts are no longer used. Instead, riders who are in wheelchairs or have a mobility impairment may deploy a ramp from either of the two center doors on a low-floor car. Read about boarding and exiting low-floor cars here.

Renovation of 10 Blue Line stations has been completed (Barrio Logan through Iris Avenue), and minor construction is currently ongoing at the Beyer Boulevard Station. Paver work at the San Ysidro Transit Center will resume in September. Work includes new station platforms, next-arrival electronic signs, shelters, track, switches, overhead electric wire and more.

All stations are open during construction and passengers are directed to temporary platform relocations and substitute bus services. (Please see construction updates below for Park & Ride reduction information.)

To stay in the know, check this page often or use the other options listed in the sidebar.

Stay in the Know


Construction schedules can change with little notice. Stay in the know. There are a number of ways you can stay updated on construction closures, detours, and other updates:

This webpage (bookmark it!)



Telephone hotline:
(619) 557-4533

Text message: Text STATIONS to GOMTS (46687) to receive construction update texts (how to unsubscribe)

Trolley station signage: Look for updated Trolley Renewal info panels at station kiosks and A-frame signs placed at impacted stations

On board: Look for the latest Trolley Renewal Travel Advisory, available on buses and Trolleys

(Check the Trolley Renewal box)


Read the latest Construction Advisory Email

Summer 2015 Construction Updates

• Construction Completions: Trolley service is operating on permanent platforms at all Blue Line Stations. Minor station work may continue, please use caution and follow station signage.

• Parking: Parking has been fully restored at all Blue Line Stations!

• Night and Weekend Work: The majority of rail tie replacement work is now complete. However, individual tie replacement and clean-up work will be ongoing in the area through early August. Work hours are Monday through Friday, 7 p.m. to 4 a.m., with possible weekend work. This work will involve the use of heavy equipment that will generate intermittent noise impacts. Crews will minimize impacts as much as possible.​

Paver work at the San Ysidro Trolley Station is expected August-September 2015.

NEW! There will be temporary Trolley closures the wekeends of August 14-16 (San Ysidro through Iris Avenue) and August 21-23 (San Ysidro through Iris Avenue and City College through American Plaza). Please see below for additional information.


View the latest construction advisories on


Additional Materials (click to view PDF)


Construction Timeline

Construction Map

Fact Sheet


Construction Updates

Trolley service will be temporarily suspended at select stations mid-to-late August for track work:

San Ysidro Transit Center to Iris Avenue Station

A bus brudge will be available between the San Ysidro, Beyer Boulevard and Iris Avenun Trolley Stations the following weekends:

          • Friday, August 14 (starting at 9 p.m.), through end-of-service Sunday, August 16
          • Friday, August 21 (starting at 9 p.m.), through end-of-service Sunday, August 23 

    Click here for the closure flier.


City College Station to Santa Fe Depot (along C Street)

The Blue and Orange Lines will terminate at City College the following weekend (no Trolley service down C Street):

      • Saturday, August 22 through end-of-service Sunday, August 23
      • Please use regularly scheduled bus service on Broadway (no Route 7 service into downtown on Sundays). Supplemental early-morning and late-night service will be provided (buses will say "Trolley Shuttle" on the front). 

    Click here for the closure flier.

Frequently Asked Questions

How are riders be affected by the Trolley Renewal project?

MTS is working to minimize the impact on riders, but with station and track closures necessary to complete construction, riders will have to adjust their travels. The majority of the closures and need for bus bridges will happen on the weekend. MTS will supply bus bridges when stations are closed, and will notify riders through station announcements, a telephone hotline, station signage and this website. MTS recommends staying up-to-date on construction closures.

Why do the Trolley Renewal project now?

The rails and equipment on the Blue Line are 30 years old and have far exceeded their original expected use. MTS is beginning the project now in order to avoid delays and breakdowns in the future. Also, the installation of additional rail crossovers between stations will allow MTS to provide service during temporary delays, ensuring smooth riding in the future.

How is the Trolley Renewal project funded?

The funding sources for this project are TransNet II, California Proposition 1B bonds, and the American Reinvestment and Recovery Act. This money comes to MTS designated for capital improvements to the system and cannot be used for day-to-day operations.

Why do we need low-floor Trolley cars?

Low-floor Trolley cars offer a significant advantage over high-floor vehicles. Since the floor of the low-floor cars is level with the station platform, boarding and exit times are reduced for all riders. The low floor also provides enhanced ADA accessibility and eliminates the need for wheelchair lifts.

The new low-floor vehicles are 81 feet in length, which is nine feet shorter than the 11 S-70 low-floor vehicles that MTS currently uses on the Green Line. The shorter length will enable the new vehicles to be used on C Street in Downtown San Diego without blocking intersections. This will allow the Green Line to come downtown, terminating at 12th and Imperial Transit Center and eliminating the need to transfer at the Old Town Transit Center.

When will we see new low-floor Trolley cars?

The new low-floor vehicles began running on the Green Line on Monday, October 3, 2011! The Green Line is now completely running the new low-floor Trolley cars. Low-floor cars are scheduled to begin operating on the Orange Line in January 2013, and on the Blue Line in 2014. These dates may change due to construction schedules.

How do I unsubscribe from the Trolley STATIONS construction update texts that I am getting from 46687?

Please send the message STOP STATIONS to the number 46687 and you will be unsubscribed from future construction updates.




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