Traffic & Transportation Engineering

Traffic & Mobility

The City's General Plan summarizes a set of recommendations for long-range transportation improvements in the City of San Gabriel. The improvements are contained in the Mobility Element of the General Plan. The General Plan Mobility Element establishes functional classifications for the City’s arterial street system.

Since some roads are not at their best as implied by those classifications, improvements will be carried out over time to achieve those configurations. The proposed long-range improvements include roadway modifications to achieve the Mobility Element Functional Classification and intersection improvements to achieve level of service performance thresholds. The intersection improvements are generally associated with the roadway improvements but in some cases provide “augmentation” to provide satisfactory level of service (Level of Service (LOS) “D” or better).

Complete Streets: Safe, Efficient & Green

Many of the city's roadways were built with an emphasis on serving automobiles above all other modes of travel. Today, we recognize the importance of serving all users - including pedestrians, cyclists, transit riders, as well as motorists. Streets also represent a large amount of hard surface area that no longer allows rainwater to absorb into the soil and recharge the groundwater needed for drinking and irrigation. By redesigning our streets to be "complete" and "green", we will make streets that are safe, comfortable and accessible to all users and environmentally friendly, sustainable, and low-maintenance. The transformation to Complete Streets will take decades, but it represents a philosophy that we have incorporated into most of our street projects, including the Las Tunas Pavement Rehabilitation Project, Citywide Bus Shelter Project and San Gabriel Boulevard Streetscape Project. 

San Gabriel Valley Bicycle Master Plan 

A Bike Master Plan is a comprehensive planning document that guides the development of bicycle infrastructure projects, programs and policies. A plan typically includes the goals and objectives; an inventory of existing conditions; community input to identify desirable routes; proposed bikeways; and policies and programs that support bicycling as a viable form of transportation, recreation and physical activity. A plan will also prioritize infrastructure projects and identify potential funding sources for implementation.

The City of San Gabriel is one of five cities preparing a Regional Bike Master Plan. In 2012, BikeSGV partnered with Day One and five cities - Monterey Park, San Gabriel, Baldwin Park, El Monte, and South El Monte - to develop a regional bicycle master plan in the San Gabriel Valley. Here you will find completed Bike Master Plan.

Metropolitan Transportation Authority & SCAG

Metro is the Metropolitan Planning Organization (MPO) that coordinates the Transportation Improvement Plan (TIP). Metro coordinates with the Southern California Association of Governments (SCAG), which prepares the Regional Transportation Improvement Plan (RTIP). To view the RTIP online visit, RTIP. RTIP projects are developed, updated, and revised through the Metro’s Program Metro website. SCAG is the agency responsible for preparing the Regional Transportation Plan (RTP).

San Gabriel Valley Council of Governments (SGVCOG)

SGVCOG assists with obtaining federal funds for local projects. Engineering Division participates in SGVCOG’s Transportation Committee. The Committee usually meets monthly.


Overnight parking is not allowed on City streets or in City parking facilities between the hours of 2 and 6 a.m. daily. If you need a permit for temporary overnight parking, you may obtain one from the machines located in front of the Community Services Building located at 250 S. Mission Dr. and in front of the Police Department Building located at 625 S. Del Mar Ave.

For long-term overnight parking permits, contact the Finance Department at City Hall. For the location of public parking facilities in the City, refer to the Public Parking Lots Map.  For proper signage of parking on private property, see the Private Property Parking Signs handout.

Traffic Studies

Traffic studies may be required for projects. Review of existing conditions and impacts from traffic added by the project will determine what traffic control measures will be required for the project.

Truck Routes

The following are designated Truck Routes:

  • Del Mar Avenue from Mission Road to Las Tunas Drive
  • Las Tunas Drive from Junipero Serra Drive to east city limits
  • Mission Road from west city limits to Junipero Serra Drive
  • San Gabriel Blvd. from south city limits to north city limits
  • Valley Blvd. from east city limits to west city limits

Industrial Area Streets (Trucks Allowed)

  • Clary Street
  • Commercial Street
  • Del Rio Avenue
  • Gladys Avenue
  • Grand Avenue
  • Madera Street
  • Main Street
  • Santa Fe Avenue

Federal Aid Routes

Federally funded projects are located on Federal Aid Routes. They are programmed projects with FHWA, CALTRANS, SCAG, and Metro through Program Metro. They are coordinated and managed by the Engineering Divisions. They are also part of the Capital Improvement Plan.

The following streets are Federal Aid Routes:

  • Alhambra Road – Minor Arterial
  • Broadway – Minor Arterial
  • Del Mar Avenue – Minor Arterial
  • Fairview Avenue – Major Collector
  • Grand Avenue – Major Collector
  • Hermosa Drive – Major Collector
  • Las Tunas Drive – Principal Arterial
  • Longden Avenue – Minor Arterial
  • Marshall Street – Major Collector
  • Muscatel Avenue – Major Collector
  • Ramona Street – Minor Arterial
  • Roses Road – Minor Arterial west of San Marino Avenue and Major Collector east of SM Avenue
  • San Gabriel Blvd. – Principal Arterial
  • Valley Blvd. – Principal Arterial
  • Walnut Grove Avenue – Minor Arterial
  • Wells Avenue – Major Collector

Federal Aid Routes can qualify for various federal matching funds for improvements if the funds ever become available.

CALTRANS – Interstate 10 (San Bernardino Freeway)

  • New Avenue is located at post mile 24.89
  • Del Mar Avenue is located at post mile 25.30
  • San Gabriel Blvd. is located at post mile 25.84

Freeway agreements with CALTRANS are on file with the City Clerk’s office.

Union Pacific Railroad (UPRR)

The original railroad in San Gabriel was Southern Pacific Railroad that was acquired by UPRR. It follows an alignment in a dedicated right of way known as the “Alhambra Subdivision”. Grade Separations are located at Ramona Street, Mission Road, Del Mar Avenue, and San Gabriel Blvd. The Alameda Corridor-East Construction Authority was responsible for a project involving the engineering and construction of grade separations at these locations. The project is formally known as the San Gabriel Trench Grade Separation Project. Construction for the project started in 2012, and it was completed in 2018. The project constructed bridges at the four crossing locations and a trench to allow the railroad to operate below grade. The relocation of utilities, storm drain & sewer construction, and improvements to the adjacent streets were also included in the project.