Important Announcements


This page reports traffic and safety advisories from the City and outside agencies.

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  • September 16, 2019: Starting Sunday night, September 22, through Wednesday night, September 25, the City will be performing evening (10pm to 6am) street repairs and resurfacing on Park Street from Buena Vista Avenue to Santa Clara Avenue. This work is being done in the evening to lessen the impact on the public and one lane will be kept open during construction.
  • August 22, 2019: Upcoming late-night Webster and Posey Tube Caltrans closures for washing:
    • Webster Tube closed 10pm-4:30am Monday, August 26-Wednesday, August 28, opening Thursday morning, August 29, at 4:30am
    • Posey Tube closed 10pm-4:30am Tuesday, September 3-Thursday, September 5, opening Friday morning, September 6, at 4:30am
    JUNE 25TH – JULY 19TH: The High Street Bridge linking the cities of Oakland and Alameda will undergo emergency repair from Tuesday, June 25th to Friday, July 19th between the hours of 7:00 a.m. and 3:30 p.m. Traffic may be affected by up to 15 minutes during construction. High Street Bridge Emergency repairs include the replacement of a traffic barrier gate and cables. The repairs are being completed on behalf of the Alameda County Public Works Agency, as part of the Bridge Preservation Program. For more information, call (510) 777-2390.
  • June 24, 2019: The High Street Bridge will undergo emergency repairs starting tomorrow, June 25, that will last until Friday, July 12, between the hours of 7:00 am and 3:30 pm. Traffic may be affected by up to 15 minutes during construction. The repairs are being completed on behalf of the Alameda County Public Works Agency, as part of the Bridge Preservation Program. For more information, please call 510-777-2390.
  • June 10, 2019: This is an advisory message from Alameda County. The National Weather Service has issued an excessive heat advisory for Alameda County lasting through tonight. Be aware of symptoms of heat illness. For a list of cooling centers click here.

  • May 10, 2019If you are headed to Alameda Point, please be advised that there are extended road closures in place for utility work being done at the intersection of Lexington and West Redline. To access the Alameda Point Gym or Multipurpose Field, please use the following route:
    • Turn left on West Midway to enter Alameda Point
    • Turn right on Monarch
    • Turn right on West Redline
    • To access the Lexington Fields
      • Turn left on West Midway to enter Alameda Point
      • Turn right on Lexington
      • The road is blocked, but the field is accessible 
  • April 18, 2019: This Monday and Tuesday night, April 22 and 23, the Webster Tube (entering Alameda from Oakland) will be closed from 9:30 pm to 4:30 am for sump pump installation. Please plan ahead to avoid delays.

  • April 18, 2019: Traffic Alert: The #4 (slow) lane on 880 South at 23rd Avenue is closed for pavement work until 3pm today. Expect delays.

  • March 28, 2019: Alameda's passport offices at City Hall will be closed today, Thursday, March 28, and Monday, April 1. We look forward to seeing you on Tuesday, April 2, and apologize for any inconvenience.

  • March 22, 2019: The upcoming late-night tube closures have been postponed until further notice. As soon as we receive updated information, we will post here.

  • March 18, 2019: On Wednesday, March 27, Caltrans will be closing the Webster Street Tube entering Alameda from 9:30 pm-4:30 am for electrical work.

  • March 14, 2019:  Caltrans Advisory: This weekend, from 10:00 pm Friday, March 15 until 10:00 pm Sunday, March 17, Caltrans is closing the 23rd Avenue overcrossing above 880 to install joint seals across the width of the overcrossing. Directional signs will be in place. The 880 Northbound at 23rd Avenue offramp closure has been extended until March 31, 2019. Detour: Use next available off ramps at either Oak Street or 29th Avenue. 

  • March 12, 2019: The Posey Tube (leaving Alameda) will be closed from 10:00 pm - 4:30 am on Wednesday, March 20, for tunnel maintenance.  

  • February 26, 2019: Caltrans issued an advisory for late night tube closures tomorrow, Wednesday, February 27, and Thursday, February 28, from 10 pm-4:30 am, to address storm maintenance issues. Please use alternative routes off the island. 

  • February 11, 2019:  Construction will begin today on the Cross Alameda Trail between Main Street and Constitution Way, along Ralph Appezzato Memorial Parkway (RAMP) and Atlantic Avenue. Please use the existing sidewalks on the north side of RAMP as temporary construction fencing will be erected on the south side, prohibiting any public or private use of this active construction zone. The City will publish regular construction updates with forecasts of upcoming construction activities, along with project manager contact information, at the project webpage at

  • January 31, 2019: Caltrans is conducting a full closure of the Posey Tube (leaving Alameda) tonight, January 30, from 10pm-4:30am and a full closure of the Webster Tube (entering Alameda) Thursday, January 31, from 10pm-4:30am to perform sump pump services and standpipe inspections. Caltrans has advised motorists to expect delays and allow extra time for their commute.

  • January 8, 2019: Caltrans is conducting a full off ramp closure on Northbound Interstate 880 at 23rd Avenue in Oakland to complete the soundwall between E. 9th and E. 10th Streets. The off ramp on I-880 will reopen to traffic on February 14, 2019. Detour: Use next available off ramps at Oak Street or 29th Avenue.