Welcome to Caltrans District 4
D4 Icon
District Director BIJAN SARTIPI

Project Menu

Check Current
Highway Conditions

You can also call



24 Lafayette Slope Stabilization

This Project Has Been Completed

Daytime Project with Occasional Night Work Starts April 19

Caltrans is starting a slope stability project that will build a three-tiered wall adjacent to eastbound State Route 24 in the vicinity of Risa Road in the City of Lafayette.

Construction Details
  • Pre-construction activities in January and February 2015 included tree/brush removal in the project area.
    • The project includes replanting of landscaping that was removed earlier this year. Native species will replace non-native species such as Eucalyptus trees.
    • The majority of work (earthwork and wall construction) will take place during the day. The contractor’s regularly scheduled hours are Monday through Saturday, from 6:30 a.m. to 4:30 p.m. This aggressive work schedule is necessary to meet the environmental work window established for this project, which requires all field work be completed by October 15, 2015.
  • Night work will only be scheduled as necessary.
    • The first night of work will take place from 9 p.m. Sunday night, April 19, to 9 a.m. Monday morning, April 20, so that the contractor can restripe eastbound State Route 24 and place concrete barriers to protect workers and motorists during construction activities.
    • Additional night work and possibly Sunday work are anticipated at the end of the project in August, September and October 2015
    • There may be additional night work that is not currently anticipated or scheduled at this time; updates will be provided as the work progresses.
    • During night work, residents may notice increased noise from construction equipment and mandatory safety back-up alarms.
    • Construction of Retaining Wall No. 1 has been completed as of mid-July. Work is continuing on construction of Retaining Wall No. 2 and excavation for Retaining Wall No. 3
    • Please check the website for updates concerning infrequent night work.
This work is subject to delay due to adverse weather conditions. Please drive cautiously through the construction zone, leave a safe traveling distance between your vehicle and the vehicle ahead of you, and Slow for the Cone Zone.

Please check this webpage for construction updates and follow us on Twitter @CaltransD4. For additional information or concerns, call or email

RocQuel Johnson, Branch Chief
Office of Public Affairs:
(510) 286-4948