Traffic & Transit
San Ramon: Overnight I-680 Onramp Closures Underway
Here's when the westbound Bollinger Canyon Road I-680 onramp will be closed. Detour signs will be in place

SAN RAMON, CA — Caltrans has scheduled overnight closures through Sept. 23 of the onramp to southbound Interstate Highway 680 from westbound Bollinger Canyon Road in San Ramon.
Repair work on the roadway began Monday night and will close the on-ramp nightly from 9 p.m. through 5 a.m. each following morning. Caltrans advises motorists to watch for detour signs and allow for extra travel time.
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