Update 3/10/14:

Last week, the SR-23 connector to the 101 south was reduced to one lane as part of initial work for the project. This change resulted in significant traffic impacts, leading Caltrans and City staff to pursue potential alternatives. Those conversations also resulted in the following:

1. Beginning with Tuesday morning's commute, the south 23 connector to the south 101 will be restored to two lanes, while work continues on the project.  
2. The project team is working together to explore alternatives regarding future construction activities on the connector.

Other updates 3/7/14:

• Northbound US 101 Connector to Northbound SR-23 reduced to one lane (in effect 24/7)
• Southbound SR-23 Connector to Southbound US 101 reduced to one lane (in effect 24/7). *Caltrans is working with the project contractor to minimize the duration of this connector lane reduction.
• Northbound Hampshire Road to Northbound US 101 on-ramp has been reduced to one left turn lane (in effect 24/7)
• Conejo School Road at US 101 undercrossing has been reduced to one lane only between 9 a.m. and 4 p.m.; flaggers on site to direct traffic
• US 101 Southbound off-ramp at Moorpark Road closed nightly between
  9 p.m. and 6 a.m. (ongoing utility relocation work)
• Northbound Moorpark Road at US 101 undercrossing lane reduction nightly between 8 p.m. and 6 a.m.

Dates and times subject to change due to unforeseen operational factors or inclement weather.

An update from the 101/23 Freeway Interchange Improvement Project team:

On Thursday, March 6 commuters experienced significant delays traveling on the southbound SR-23 transition to the southbound US 101 freeway as a result of striping modifications made recently on the connector. As part of the US 101 / SR-23 Interchange Improvement project, the southbound SR-23 connector to the southbound US 101 freeway will be reduced to one lane during construction, in order to accommodate for the widening of the US 101 freeway mainline. The project team is currently exploring all options to improve the striping delineation to help motorists navigate the new reduced lane configuration. In addition, the team will be exploring opportunities to add additional signage in the area to provide advanced notification to alert motorists traveling through the interchange. 

The City of Thousand Oaks and Caltrans are aware of the delays caused as a result of this lane reduction. We apologize for the inconvenience this caused to motorists who were caught off guard. Delays are expected in the area as the team explores options to improve the striping and add additional signage in advance of the lane reduction. To minimize delays, use an alternate route if possible or allow extra time to reach your destination.

We are committed to providing proactive public outreach support to minimize impacts to the traveling public and to help commuters avoid delays due to unanticipated construction / maintenance activity. Additional information will be provided as soon as it becomes available and the team is making every effort to ensure advanced notice is provided in the future.