FREEWAY FORECAST

Road closures and repair work on freeways and surface streets:

Online help: Freeway traffic information is also available on the Caltrans World Wide Web site. It updates every minute. The address:

https://www.scubed.com/caltrans/

Santa Ana Freeway (I-5)

* At Alton Parkway: Various lanes will be closed in each direction between Alton Parkway and the El Toro Y from 11 p.m. to 5 a.m. daily through January.

* At Orangethorpe Avenue: The northbound Orangethorpe Avenue onramp will be closed through April.

* At Magnolia Avenue: The southbound Magnolia Avenue onramp will be closed through September..

* At 17th Street: One northbound lane will be closed between 17th Street and the Garden Grove Freeway (22) interchange from 10 p.m. Thursday to 5 a.m. Friday..

* At Main Street: Various northbound lanes will be closed between Main Street and Chapman Avenue from 10 p.m. Thursday to 5 a.m. Friday..

San Diego Freeway (I-405)

* At Irvine Center Drive: The southbound Irvine Center Drive onramp will be closed from 11 p.m. to 5 a.m. nightly through April.

* At Laguna Canyon Road: Various lanes will be closed in each direction between Laguna Canyon Road and University Drive from 9 a.m. to 3 p.m. through April.

* At MacArthur Boulevard: The northbound and southbound MacArthur Boulevard onramp and offramp will be closed from 9 a.m. to 3 p.m. through May.

* At Costa Mesa Freeway (55): Various northbound and southbound lanes will be closed between the Costa Mesa Freeway and MacArthur Boulevard from midnight to 5 a.m. through May.

Costa Mesa Freeway (55)

* At Chapman Avenue: One lane will be closed in each direction between Chapman and Fairhaven avenues from 7 a.m. to 3 p.m. Saturday.

Corona del Mar Freeway (73)

* At University Drive: The northbound University Drive onramp will be closed through December.

Surface Streets

* MacArthur Boulevard: Various lanes will be closed in each direction between Main Street and Michelson Drive through January.

* Warner Avenue: Various lanes will be closed in each direction between Harvard Avenue and Jamboree Road through January.

* Harbor Boulevard: Various lanes will be closed in each direction between Adams and Gisler avenues daily through January.

* Michelson Drive: Various lanes will be closed in each direction between Jamboree Road and Harvard Avenue through July.