From all of us at the 405 Improvement Project, we wish you a joyful holiday season with the ones you love! ✨❄️ There will be no freeway closures from 1 p.m. Friday, Dec. 22, to 10 p.m. Tuesday, Dec. 26.

I-405 Improvement Project Construction Alert: As of Friday, Dec 22. Click here to view the latest construction activities: conta.cc/3tDhRVf ⚠️🚨 #Construction #OrangeCounty #OC #405Improvement #CaltransOC

Travel over the NEW 405 Express Lanes with this drone shot of the now open I-405/SR-73 Connector! Be sure to visit 405expresslanes.com to learn more about the Express Lanes. #FreewayConnector #FasterFuture #Construction #OrangeCounty #OC #405Improvement #CaltransOC

I-405 Improvement Project Construction Alert: As of Friday, Dec. 29. Click here to view the latest construction activities: conta.cc/3tqicLb ⚠️🚨 #Construction #OrangeCounty #OC #405Improvement #CaltransOC

This #WayBackWednesday highlights the Slater Avenue bridge. Slater bridge was the first to be completed and reopened to traffic. 🚙 #Slater405 #FasterFuture #Construction #OrangeCounty #OC #405Improvement #CaltransOC

While remaining open to traffic, the Goldenwest Street and Bolsa Avenue bridges were completely reconstructed. The improved bridges now consist of an additional 2-3 lanes of travel, new bike lanes in each direction, and one additional sidewalk! #FasterFuture #405Improvement

NEW! The NB and SB 405 Express Lanes and connectors from I-605, SR-22, and SR-73 will close for maintenance. The closures are anticipated as early as 11 p.m. Friday, Jan. 12, to 6 a.m. Saturday, Jan. 13.

I-405 Improvement Project Construction Alert: As of Friday, Jan. 12. Click here to view the latest construction activities: conta.cc/47Bz53n ⚠️🚨 #Construction #OrangeCounty #OC #405Improvement #CaltransOC

As we move towards total project completion/closeout, crews continue landscaping throughout the corridor. These shots showcase fresh landscaping in the City of Seal Beach. #Landscaping #Construction #OrangeCounty #OC #405Improvement #CaltransOC

I-405 Improvement Project Construction Alert: As of Friday, Jan. 19. Click here to view the latest construction activities: conta.cc/3Oa9Tu6 ⚠️🚨 #Construction #OrangeCounty #OC #405Improvement #CaltransOC

Have questions about the new 405 Express Lanes? Head to 405expresslanes.com to learn about how to acquire a transponder, toll policies, and more! 🚘 #FasterFuture #Construction #OrangeCounty #OC #405Improvement #CaltransOC

I-405 Improvement Project Construction Alert: As of Friday, Jan. 26. Click here to view the latest construction activities: conta.cc/4basShU ⚠️🚨 #Construction #OrangeCounty #OC #405Improvement #CaltransOC

McFadden Street bridge was the first on the project to receive demolition construction activities. Upon its reopening in 2020, the bridge unveiled 2 additional vehicle lanes, new bike lanes on both sides and a new eastbound sidewalk! #McFadden405 #FasterFuture #405Improvement

Check out Newland Street bridge’s NEW look! This was the last bridge on the project to be demolished for reconstruction. Newland’s bridge improvements included construction of a new northbound sidewalk, bike lanes in both directions, and two additional vehicle lanes.

Did you know? To update some of Orange County’s most vital infrastructure, the project contractor used: -172,000 cubic yards of Redi-Mix concrete -360,000 tons of asphalt -38,000,000 pounds of bridge rebar #InfraStructure #FasterFuture #405Improvement

Update! The I-405 Improvement Project will no longer be posting weekly construction alert reels. Beginning mid-March, the weekly Friday email alerts will no longer be sent out. The closure list is still available on the project website at octa.net/405construction.

REMINDER! The I-405 Improvement Project is no longer posting weekly construction alert reels. Beginning mid-March, the weekly Friday email alerts will no longer be sent out. The closure list is still available on the project website at octa.net/405construction.

⚠️ATTN I-405 freeway drivers & community members⚠️ The I-405 Improvement Project will no longer post weekly construction alert reels & weekly email alerts will no longer be sent. The closure list is available on the project website at octa.net/405construction.