Paving project tentatively scheduled to be completed by Summer 2027.
Contra Costa County Caltrans crews continue making progress on State Route 4 tonight, Wednesday, August 19 through Thursday with paving, drainage, electrical and guardrail work scheduled throughout the corridor.
Full Closure SR-4 — Balfour Road to Byron Highway through 7:00 p.m. to 5:00 a.m.
- Full closures of the conventional highway sections of SR-4 between Balfour Road and Byron Highway through Marsh Creek Road – for paving operations
- Full Closures will continue through August 2026 throughout this corridor
Eastbound SR-4 — Hillcrest Avenue to SR-160 8:00 p.m. to 8:00 a.m.
- Alternating closures of lanes #3 and #4
- Hillcrest Avenue on-ramp to eastbound SR-4 — CLOSED for drainage improvements
Westbound SR-4 Ramp Closures 7:00 p.m. to 5:00 a.m.
- Sand Creek Road on-ramp to westbound SR-4 — CLOSED for guardrail work
- Balfour Road on-ramp to westbound SR-4 — CLOSED for guardrail work
- Balfour Road off-ramp from westbound SR-4 — CLOSED for electrical work
Eastbound SR-4 Balfour Road Off-Ramp 8:00 p.m. to 8:00 a.m.
- Balfour Road off-ramp from eastbound SR-4 — CLOSED for electrical work
Please note complete closures, as well as lane and ramp closures, will continue along SR-4 Sunday through Thursday nights as construction progresses. The westbound SR-4 closures are expected to reopen by 5:00 a.m., while the eastbound SR-4 to closures are expected to reopen by 8:00 a.m.
Traveling through the SR-4 corridor tonight? Plan ahead and expect delays. Please follow posted detours, allow extra travel time and slow down when approaching crews and equipment. Your attention behind the wheel helps everyone working along the highway get home safely…