Contra Costa Air Quality

As part of the City’s Golf Club Road/Old Quarry Road Improvement Project, there will be road closures (near Diablo Valley College) between November 10 and November 19. Old Quarry Road Closure Old Quarry Road will be temporarily closed between Golf Club Road and Chilpancingo Parkway starting at 8 a.m. on November 10 (Friday) through 6 p.m. on November 12 (Sunday), and between 8 a.m. on November 17 (Friday) through 6 p.m.... Read the rest
Overnight on Saturday, June 18, I-80 will be closed in both directions in the Richmond/San Pablo area for construction on the San Pablo Dam Road Interchange. The closure will be between San Pablo Ave and San Pablo Dam Rd and be in effect from 11pm Saturday, June 18 to 7am Sunday, June 19. Temporary detours will be in effect. For more details on the closure, please visit the San Pablo Dam Road Interchange information page.... Read the rest
The California Department of Transportation and the Contra Costa Transportation Authority are constructing two new connector ramps, one connecting westbound State Route 4 (SR-4) to northbound SR-160, and one connecting southbound State Route 160 (SR-160) to eastbound SR-4 in Contra Costa County. Part of this construction work entails adjustment of temporary bridge supports that span over SR-4. In order to ensure crew and public safety during this work, the contractor will close all lanes of SR-4 in the eastbound and westbound directions between the SR-4/SR-160 connector ramp and Laurel Road.... Read the rest
Buskirk Avenue will be partially closed and flagged to one-way traffic typically from 7:30 A.M. to 4:00 P.M. from Monday, September 23 to Friday, September 27, 2013. Some work may occur outside these listed times depending on weather, field conditions and work conflicts. Motorists should expect delays during these construction periods. Please use alternate routes or allow for extra travel time. The City’s contractors, Ghilotti Brothers and Saint Francis Electric, will be installing underground joint trenching across Buskirk Avenue near the Marshalls store from Monday, September 23 to September 27, 2013.... Read the rest
According to, Caltrans will close the connector between westbound Route 24 and Northbound Highway 13 beginning at 5 PM on Friday- July 30 until Monday-August 2 at 5 AM. Traffic seeking northbound Hwy 13 will be detoured onto the Caldecott Lane off-ramp. Signs will guide motorists to northbound Hwy 13. Source: • ... Read the rest
According to, the left lane and the adjacent lane (#1 & #2) of westbound Route 24 before the Caldecott Tunnel will be closed Wednesday and Thursday nights, July 14-15 from 11:00 PM – 4:00 AM. The middle tunnel bore will also be closed during this time period. Source: • ... Read the rest
According to, the far right lane (#4) of westbound Route 24, before to the Caldecott Tunnel will be closed Tuesday night, July 13. The closure at 7:30 PM, with full closure in place by 8:30 PM. The closure will be until 4:00 AM. Also, the Fish Ranch Road off-ramp and on-ramp will be closed from 9:00 PM – 5:00 AM. That same night, Tunnel Bore #3 will be closed from 10:00 PM – 4:00 AM.... Read the rest
July 6-8 the far right lane (#4) of westbound Route 24 will be closed. Work crews will begin the closure at 7:30 PM and full closure will take place at 8:30 PM. The closure will take place until 4:00 AM. During those nights, the Wilder off-ramp will be closed from 9:30 PM until 5:00 AM. The Wilder on-ramp will be closed from 11:30 PM until 5:00 AM. July 6-8 the Fish Ranch Road off-ramp will be closed from 9:00 PM.... Read the rest
Photo courtesy of Caltrans. Were you stuck on the bay bridge traffic this week… yet again? If you were commuting at night, gridlock was most likely due to the lane closures that began on Friday, December 11. (However–come to think of it–we’re not convinced it wasn’t also Lady Gaga and the 49ers). Why the bottleneck? Labor Day weekend, workers discovered and repaired a crack in an eyebar on the bridge. In late October, the section underwent additional work.... Read the rest
East Bay Municipal Utility District will be conducting pipeline work in the vicinity of Pleasant Hill Road near Acalanes High School. In order to conduct the work, single lane closures will be expected on southbound Pleasant Hill Rd from Springhill Rd to Acalanes Rd beginning June 15th, 2009.  Work hours are from 9:15 a.m. to 6:00 p.m.  M-F.  Occasional and intermittent lane closures can be expected in the northbound direction to allow for staging of equipment.  ... Read the rest