San Jose Traffic Pulse

******Caltrans full I-80 EB closure in SF Apr17-20 to cause major Bay Area snarls** [developing]** [developing]** [developing]

******Caltrans full I-80 EB closure in SF Apr17-20 to cause major Bay Area snarls** [developing]** [developing]** [developing]

Key Questions

When is the full eastbound I-80 closure in San Francisco scheduled?

The full eastbound I-80 Bayshore closure between 17th and 4th Streets, including the 101 connectors, is scheduled from Friday, April 17 at 11 p.m. until Monday, April 20 at 6 a.m. This is for viaduct rehabilitation work confirmed by Caltrans.

What section of I-80 will be closed during this period?

The closure affects 1.6 miles of eastbound I-80 Bayshore Freeway from 17th Street to 4th Street in San Francisco, including connectors to Highway 101. Significant congestion is expected in SoMa, Mission Bay, and surrounding areas.

Why is Caltrans closing this section of I-80?

The closure is part of ongoing rehabilitation work on 71-year-old viaducts carrying Interstate 80 through downtown San Francisco. Caltrans has confirmed the work to address infrastructure needs.

What traffic impacts and detours are expected from the I-80 closure?

Major gridlock is anticipated in SoMa, with detours via Bryant, Folsom, Potrero, and 9th Streets, as well as public transit options. Expect ripples to 101 and 280 commutes to San Jose, worsened by Warriors crowds; warnings label it potential 'Carmageddon'—avoid the Bay Bridge if possible.

How can I stay updated on the I-80 closure and traffic conditions?

Monitor Caltrans QuickMap for real-time ramp statuses, ETAs, and updates. Information is confirmed by sources like SF Chronicle, KRON4, and Caltrans announcements as the situation develops.

Full EB I-80 Bayshore closure SF 17th-4th Sts +101 connectors Fri11p-Mon6a Apr17-20 (1.6mi viaduct rehab confirmed); 'Carmageddon' warnings for SoMa gridlock, detours Bryant/Folsom/Potrero/9th/public trans, significant ripples to 101/280 SJ commutes amid Warriors crowds. Confirmed by Caltrans/SFChron/KRON4; monitor QuickMap for ramps/ETAs amid other Caltrans nights.

Sources (5)
Updated Apr 15, 2026