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Public Works Engineering

The Engineering Division is responsible for the management of construction contracts and activities; management of contractual engineering services; development of Standard Designs of Common Engineering Structures; engineering and technical assistance to other departments; infrastructure grant procurement, monitoring, and reporting; maintenance of GIS data and different mapping and record systems; compliance with local, regional, state, and federal laws; development of staff in technical, organizational, and supervisory skills; chair and staff support to the Traffic Committee; and management of right-of-way activities.

Staff engineers review development plans for residential and commercial projects within the city to assure they meet State Standards and issue encroachment permits about those projects. The Engineering Department is committed to responding to the changing needs of our community and to ensuring San Dimas remains a distinctive place in which to live and work.

The Engineering Department is responsible for handling all issues related to traffic in the City of San Dimas. Traffic improvements originate from many different sources including City projects, developer projects, and citizen requests. Engineering staff researches and responds to all citizen complaints and requests, which often include inquiries for stop signs, traffic signs, parking restrictions, and crosswalk additions and removals.

The Engineering Department reviews and inspects development proposals and compliance with city policies, procedures, codes, standards, and other governmental requirements relating to land subdivisions, grading, drainage, public improvement within the city right-of-way, and transportation matters. The Department is also responsible for the management, rehabilitation, and replacement of public improvements, such as water mains, sewer mains, storm drains, streets, traffic signals, etc. to provide continued reliable service to the community. Also, the Department is responsible for receiving bids and proposals for the development and construction of new public roadways, sidewalks, and overseeing projects that affect public property to protect and enhance the community’s quality of life.

Traffic Counts and Speed Survey

Traffic Counts- The Engineering Division is responsible for maintaining current traffic counts on arterial and collector streets. Traffic counts are generally updated every two years.

Speed Survey- Speed limits on City streets are updated approximately every five years.  The Engineering Division works closely with the Police Department to perform an engineering and traffic survey and update speed limits based on the results.

Click here for a copy of the most recent data: 24 Hour Count

Sewer Information

The City’s sewers are maintained by Los Angeles County Consolidated Sewer Maintenance District.  The County’s Annual Report provides information on how to avoid an expensive drain back up, as well as contact information and background on the division.

To provide a consistent, statewide regulatory approach to address the issue of sanitary sewer overflow (SSO), the State Water Resources Control Board (State Water Board) adopted Statewide General Waste Discharge Requirements (WDRs) for Sanitary Sewer Systems, Water Quality Order No. 2006-0003 (Sanitary Sewer Systems WDR) on May 2, 2006. The Sanitary Sewer Systems WDR requires public agencies that own or operate sanitary sewer systems to develop and implement sewer system management plans and report all SSOs to the State Water Board’s online SSO database.

The City’s Sewer System Management Plan (SSMP) can be viewed through the links below.  Hard copies and copies of the attachments may be considered upon request at City Hall.

If you have any questions or concerns regarding the sewer, please contact the City of San Dimas Public Works Department at (909)394-6240.  For emergencies, contact the Los Angeles County Consolidated Sewer Maintenance District directly at 800-675-HELP(4357).

Bids & Proposals

The Public Works Department advertises capital improvement projects for open bids.  Projects are announced in the local Inland Valley Daily Bulletin (newspaper and online) and four planrooms (listed below):

Reed Construction Data
Document Processing Center
30 Technology Parkway South, Suite 500
Norcross, GA 30092-2912

F. W. Dodge (McGraw-Hill or The Green Sheet)
1333 S. Mayflower Avenue, Suite 300
Monrovia, CA 91016-4066

Construction Bidboard
4420 Hotel Circle Ct., Suite 21
San Diego, CA 92108

Plan Room
41085 Elm Street
Murrieta, CA 92562

Encroachment Permit

A Public Works Encroachment Permit is required before any construction or activity that involves City Right-of-Way, including renting a dumpster.   All inquiries may be directed to Public Works Engineering at (909) 394-6240.

Click here for the Engineering Fee Schedule.


The City of San Dimas Public Works Engineering Division follows the 2009 Edition of the “Greenbook” Standard Specifications for Public Works Construction and Standard Plans for Public Works Construction and Specifications.

The “Greenbook” is available for viewing only.  For copies, contact BNI Building News at (760) 734-1113.