Nellis from Howe Avenue to Alps Road was also closed following the 3 p.m. break. The work was continuing as of 5:20 p.m.
Evening rush-hour motorists reported tie-ups on Valley and Ratzer roads, as well as other arteries.
"It's a complete mess," reported motorist Michele Diane Tiritilli. "To go from Valley Road to Oakland I had to go to [Route] 23."
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