Grinding and drilling operations to occur on I-405 Improvement Project this week

Grinding operations and drill exploration work will occur intermittently throughout the project area from April 2 to April 7. Grinding operations involve the formation of joints or breaks in a concrete slab by the use of mechanical cutting tools.

Drill exploration is performed to obtain information on the soil and rock around a site in order to design structures. Crews will be on the northbound (NB) and southbound (SB) lanes of the I-405 freeway and on- and off-ramps.

Please see below for specific work locations.

Costa Mesa
Weekday Nighttime Work – 10 p.m. to 5 a.m.
Weekend Nighttime Work – 10 p.m. to 7 a.m.
  • NB 405 from SR-73 to Fair View Road. *
  • NB 405 from Fairview Road. to Harbor Boulevard.*
  • NB 405 Harbor Boulevard. On-Ramp
  • SB 405 Harbor Boulevard. On-Ramp and Off-Ramp
  • NB 405 Fairview Road. On-Ramp
  • SB 405 Fairview Road. Off-Ramp