Closures & Detours
Week of Monday, August 10, 2025
The interactive map below is updated weekly and includes specific closure dates and times as well as recommended detours that may be convenient for your commute.
Closures subject to change without prior notice. For up-to-the-minute driving conditions throughout Orange County, visit Sigalert.com or check out Caltrans' Quickmap .
Map View
Full Closure
Lane ReductionList View
Southbound 241 at Trabuco Creek Bridge
The right lane will be closed indefinitely on the southbound 241 at the Trabuco Creek Bridge (located between Los Alisos Boulevard and Santa Margarita Parkway).
The Bison Avenue on-ramp to northbound 73 Toll Road
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 7 a.m. (8/15)
The Laguna Canyon Road off-ramp from southbound 73 Toll Road. This closure is anticipated to cause a 5-minute travel delay.
9 a.m. to 2 p.m.
The Portola Parkway (Mission Viejo) on-ramp to southbound 241 Toll Road
9 p.m. to 5 a.m. (8/11 – 8/14)
11 p.m. to 7 a.m. (8/15)
The Alton Parkway off-ramp from southbound 241 Toll Road
9 p.m. to 5 a.m. (8/11 – 8/14)
11 p.m. to 7 a.m. (8/15)
The Alton Parkway on-ramp to southbound 241 Toll Road
9 p.m. to 5 a.m. (8/11 – 8/14)
1 p.m. to 7 a.m. (8/15)
Lanes reduced on the northbound 73 Toll Road between Bison Avenue and McArthur Boulevard. One lane open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 7 a.m. (8/15)
Lanes reduced on the northbound 241 Toll Road between Oso Parkway and Antonio Parkway. One lane open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 9 a.m. (8/15)
Lanes reduced on the northbound 241 Toll Road between Los Alisos Boulevard and Lake Forest Drive. Two lanes open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 9 a.m. (8/15)
Lanes reduced on the northbound 241 Toll Road between Portola Parkway (Mission Viejo) and Portola Parkway (Irvine). Two lanes open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 9 a.m. (8/15)
Lanes reduced on the southbound 241 Toll Road between Antonio Parkway and Oso Parkway. Two lanes open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 9 a.m. (8/15)
Lanes reduced on the southbound 241 Toll Road between Alton Parkway and Los Alisos Boulevard. One lane open to traffic.
9 p.m. to 5 a.m. (8/11 – 8/14)
9 p.m. to 9 a.m. (8/15)
Lanes reduced on the Santa Margarita Parkway off-ramp from southbound 241 Toll Road. One lane open to traffic.
9 p.m. to 5 a.m. (8/13 – 8/14)
11 p.m. to 7 a.m. (8/15)
Lanes reduced on the Portola Parkway (Mission Viejo) off-ramp from northbound 241 Toll Road. One lane open to traffic.
9 p.m. to 5 a.m. (8/14)
11 p.m. to 7 a.m. (8/15)
Other Resources
- For additional information about construction projects, please contact Caltrans at dot.ca.gov
- For specific closure information on The Toll Roads and other highways in Orange County, visit: https://lcswebreports.dot.ca.gov/searchdistricts?district=12
- For current road information, visit: dot.ca.gov/cgi-bin/roads.cgi
- To view current traffic incident information, visit the California Highway Patrol's Orange County Communication Center website: cad.chp.ca.gov
Updated August 8, 2025. Closures subject to change without prior notice.
