City Construction Projects

Construction Updates
Visit this page for construction and related notices for work occurring in San Dimas.
Note that while the City makes every attempt to provide you with the most up-to-date information, construction schedules may change with little or no notice for various reasons, including, but not limited to, weather conditions and unforeseen delays.  Thank you for your patience as we work together to improve the City of San Dimas!
Please click here for the most up-to-date information on the Foothill Gold Line.
Click here to view recently completed projects.
CC2024-02 Lone Hill- Street Improvement Project

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Construction Update 6/07/2024
Starting June 10, the City’s contractor Vance Corporation will mobilize equipment and start removal and replacement of concrete sidewalks and ramps. Vehicle traffic on Lone Hill Avenue will be reduced to one lane in each direction between Cienega Avenue and Covina Boulevard during working hours of 7:00 am to 5:00 pm.

Construction Update: 5/31/24
You are cordially invited to find out more information about the project and its impact at the meeting scheduled for Thursday, June 06, 2024 at 6:00 pm at San Dimas City Hall. Members of the Public Works Department and the project’s contractor, Vance Corporation. will provide a project overview, projected schedule, and will address any questions or concerns that may arise.  For additional information please contact the City’s Public Works Department at (909) 394-6240 or via email at

Construction Notice

Construction Update: 3/20/2024
The SB1 Funded Lone Hill Avenue Street Improvement Project will reconstruct Lone Hill Avenue between Covina Boulevard and W Cienega Avenue providing reduced future maintenance costs, increased safety, and an aesthetically pleasing, smoother, and quieter street surface for residents for decades to come.  This project will reconstruct approximately 97,000 square feet of pavement using approximately 4,700 tons of asphalt concrete. Along with the street rehabilitation, this project will replace minor curb, gutter, sidewalk panels, and corner ramps to improve accessibility.
This project incorporates environmentally friendly and cost-effective rubberized asphalt pavement which incorporates used automobile tires into our pavement design. This process will divert approximately 2,000 California automobile tires from going directly into a landfill while significantly improving the performance of our roads including reduced pavement cracking, reduced pavement noise, and longer lasting and more resilient pavement.
The project costs approximately $1.2 million and a portion of that amount is SB1 funded. In addition to fixing our local roads, SB1 provides investments to make significant improvements to the state highway system throughout California. The full list of projects can be found at

While we understand that construction projects may cause temporary inconvenience, your cooperation and patience during the construction period are greatly appreciated as we work towards creating a more aesthetically pleasing environment for all residents.
CC2024-01, East Via Vaquero - Street Improvement Project

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Construction Update: 3/20/2024:
We are excited to announce a significant infrastructure improvement project that will enhance the quality and safety of our community's road network. The project encompasses the removal and replacement of asphalt concrete and Portland cement concrete on East Via Vaquero, Pistol Creek, and Cedar Creek. Our key objectives are to enhance safety, reduce future maintenance costs, and provide a visually pleasing, smooth street surface. The project spans approximately 45,000 square feet of pavement reconstruction and rehabilitation, utilizing a total of 1,200 tons of asphalt concrete pavement and performing Portland Cement Concrete (PCC) improvements, alongside re-striping of traffic legends. The total cost amounts to $450,000.00, with $400,000.00 covered by SB-1 funds (Gas Tax) and $50,000.00 from Measure R funds, emphasizing City’s commitment to utilizing state and local resources for community benefit. We understand that construction projects may cause temporary inconvenience, but we assure you that every effort will be made to minimize disruptions and complete the work efficiently. Your cooperation and patience during the construction period are greatly appreciated as we work towards creating a safer and more aesthetically pleasing environment for all residents.
AQMD - MSRC Grant Program
The City of San Dimas has received a grant from the Mobile Source Air Pollution Reduction Committee through the South Coast Air Quality Management District. The grant will be used towards upgrading traffic signals to meet state requirements for bicycle detection at three intersections in San Dimas. For more information, please visit the MSRC website or view this flyer.