Since its incorporation in 1960, the unprecedented growth of San Dimas has transformed the City from an essentially rural area to a well-balanced community offering industrial, commercial, and residential living. In addition to the 1,700 acre Frank G. Bonelli Recreational Area which lies within the City boundaries, there are many parks such as San Dimas Canyon Park, a city-owned golf course (San Dimas Canyon Golf Club), and over 27 miles of equestrian trails for riding. The city services include an extensive recreational program for youth and for senior citizens, and the City boasts a new modern City Hall, with excellent provisions made for County Sheriff and Fire Departments, along with a fine Los Angeles County Library and Engineering Regional Office.
San Dimas Business Owners: Gold Line Update

Eucla Avenue crossing will be closed starting March 1st running through potentially August. This has shifted the closure of Bonita/Cataract further out. New closure dates have not yet been confirmed. Please expect a minimum 6 month delay.
The Gold Line is currently working with the contractor to reduce the length of time Bonita Avenue will be closed.
San Dimas Ave at Commercial
New traffic signal is almost complete. The signal poles are installed. Estimate the signal should be operational in the first part of March.
San Dimas Ave at Bonita Ave
Installation of the new traffic signal poles has begun.
The intersection will be widened.
Intersection of Bonita/Cataract
Vacant property at the south side of Bonita west of Cataract:
- Tree removal complete
- The contractor will begin installing street improvements
Tree removal in the Bonita median(east and west of Cataract)
Tree removal at the northeast corner (within the City right of way)
The Gold Line is working to keep Bonita Ave. open for as ling as possible. Bonita Ave street work will be done is phases in order to maintain traffic.
If you have any questions, please contact either the Gold Line Authority at : https://foothillgoldline.org/dual_content_with_ph/questions_comments/ or contact the City of San Dimas at publicworks@sandimasca.gov or (909) 394-6240.