SAC 5 Vision Zero Acceleration Lane
Project Description:
Near Thornton, from Lost Slough Bridge to Dierssen Road Overcrossing. Extend acceleration lanes at Twin Cities Road, and upgrade lighting, signs, and striping.
Project Map:
Project Benefits:
As outlined in the 2020-2024 Caltrans Strategic Plan and the 2022 Director’s Policy on Road Safety (DP-36), Caltrans has embraced a Vision Zero Goal (VZG), aiming to achieve zero deaths or serious injuries as part of the 2023 Caltrans Strategic Highway Safety Plan (SHSP). The SHSP was developed in collaboration with a wide range of traffic safety stakeholders across the state including federal, tribal, state, and local representatives.
Purpose:
The purpose of this proposed project is to improve user safety at the interchange and reduce the number of collisions.
Need:
The District 3 Traffic Safety team has determined that vehicles entering Interstate 5 (I-5) from Twin Cities Road on-ramps do not have sufficient acceleration lengths. This has resulted in vehicles entering the mainline at lower speeds, causing a pattern of rear end and sideswipe collisions. Installing acceleration lanes at the interchange will help alleviate the issue by increasing the time to safely merge.
Funding:
This project was programmed in the 2024 State Highway Operation and Protection Program (SHOPP) and funded from 20.XX.201.010 Safety Improvements Program.
Cost Estimate:
| Support | $5,330,000 |
| Capital | $6,860,000 |
| Total | $12,190,000 |
Proposed Schedule:
| Project Approval & Environmental Document | April 2025 |
| Design Completed | March 2026 |
| Advertise Project |
April 2026 |
| Begin Construction |
July 2026 |
| Complete Construction |
December 2027 |
Project Contact Information:
John Bamfield, Project Manager, (530) 720-9938; John.Bamfield@dot.ca.gov
Dennis Keaton, Public Information Officer, (916) 825-5252; Dennis.Keaton@dot.ca.gov