Different crashes caused bottlenecks on northbound Interstate 680 near the same Danville exit during the morning and evening commutes Tuesday.
The first crash, reported around 10:20 a.m. almost a mile south of the Sycamore Valley Road exit, blocked all lanes initially and then slowed traffic through the corridor for more than an hour and a half while officials worked to clear the multi-vehicle wreckage, according to the California Highway Patrol.
All lanes were re-opened as of 12:30 p.m. The incident occurred on a stretch of I-680 that is currently without a northbound shoulder due to construction.
Commuters faced lane closures in nearly the same spot on northbound I-680 Tuesday evening following a crash on the highway adjacent to the Sycamore Valley Road off-ramp just before 6 p.m.
Information on potential injuries from each crash was not immediately available.
Information from the Bay City News Service was used in this report.