EARTHQUAKE / The Long Road Back : Drivers Beware

Transportation officials added new closures to the commuter grid Thursday as thousands of Southland commuters struggle to find new routes.

The following road conditions are in place:

1. Northbound Pacific Coast Highway, all lanes open. Southbound, Lane 3 is closed one-quarter mile north of McClure Tunnel.

2. Golden State Freeway (I-5) northbound, closed from Antelope Valley Freeway (California 14) to Lyons Avenue, but truck lane to Antelope Valley Freeway is open. Golden State Freeway, two northbound lanes, closed at Magic Mountain Parkway. On-ramp from Magic Mountain Parkway is closed.

Primary alternate: Take northbound Antelope Valley Freeway to Placerita Canyon Road, left on Placerita Canyon Road, left on Sierra Highway, right on San Fernando Road (California 126), left (west) on Lyons Avenue to I-5. For truck detour, take northbound 14 to westbound California 138 to northbound I-5. Northbound I-5, two lanes open.

3. The southbound Golden State Freeway (I-5) is closed between Lyons Avenue and the Foothill Freeway (I-210) because of bridge collapse. Old Road detour will be opened this weekend. The detour will consist of two lanes in each direction between Calgrove and I-5 truck stop just north of 1-5 interchange with California 14. Two lanes closed on I-5 southbound at Rye Canyon Road.

Primary alternate: Exit at Lyons Avenue east, right (south) to San Fernando Road (California 126), right (south) on Sierra Highway, left (south) to San Fernando Road, right (south) on Sepulveda Boulevard, left (east) to Roxford Street to southbound I-5.

4. Golden State Freeway (I-5) southbound, north of California 138: local traffic only past California 138. All other traffic will be detoured via primary alternate.

Primary alternate: On Golden State (I-5) southbound, exit to California 138 (eastbound) to the Antelope Valley Freeway (California 14) southbound to eastbound California 138 to the southbound Barstow Freeway (I-15). Use westbound San Bernardino Freeway (I-10) or the Pomona Freeway (California 60) to Downtown L.A.

5. The eastbound Santa Monica Freeway (I-10) is closed from La Cienega Boulevard to Washington Boulevard. Northbound and southbound connectors to San Diego Freeway (I-405) are open.

Primary alternate: Use Robertson Boulevard exit, left on Venice Boulevard, right on National Boulevard, continue on Jefferson Boulevard, left on La Brea Avenue to eastbound Santa Monica Freeway. Car-pool lane detour: Use southbound La Cienega Boulevard exit, right on La Cienega, left on Washington Boulevard, to eastbound I-10.

6. The westbound Santa Monica Freeway is closed from Washington Boulevard to La Cienega Boulevard.

Primary alternate: Exit northbound La Brea Avenue, right to Pico Boulevard, left (west) on Pico, left (south) on Robertson Boulevard to westbound I-10.

Car-pool lane detour: Exit at Washington Boulevard, proceed right (north) to Fairfax Avenue, left (west) at Venice Boulevard, right (west) at Cadillac Avenue, left (south) at La Cienega Boulevard to westbound Santa Monica.

7. The westbound Santa Monica Freeway connector to the southbound San Diego Freeway (I-405) is open.

8. Antelope Valley Freeway (California 14): one lane is closed between the Golden State Freeway (I-5) split and San Fernando Road. Off-ramp to Sierra Highway closed.

Primary alternate: Use off-ramp to Via Princessa to Sierra Highway.

9. Antelope Valley Freeway (California 14) southbound closed at Placerita Canyon Road (before the Golden State Freeway (I-5) interchange).

Primary alternate: Exit southbound Antelope Valley Freeway at Placerita Canyon Road, left (south) on Sierra Highway, which turns into San Fernando Road, proceed south (right) to Sepulveda Boulevard, continue to southbound I-5.

10. Hollywood Freeway (U.S. 101) connector northbound at California 170 is open.

11. Eastbound Simi Valley Freeway (California 118) is closed from Reseda Boulevard to the Foothill Freeway (I-210). Two lanes closed on eastbound 118 between Tapo Canyon Road and Stearns in Ventura County. Westbound Simi Valley Freeway (California 118) is closed from the Foothill Freeway (I-210) to Reseda Boulevard.

Primary alternate: Exit onto southbound Tampa Avenue to Devonshire Street, left on Devonshire to southbound San Diego Freeway or continue on Arleta Avenue, left on Van Nuys Boulevard to southbound Golden State Freeway or the Foothill Freeway. Primary alternate, westbound: From northbound San Diego Freeway (I-405) exit at Devonshire Street, left to Tampa Avenue, right to westbound Simi Valley Freeway (California 118).

12. All connector lanes from eastbound I-210 to westbound Simi Valley Freeway (California 118) are closed.

Primary alternate: Use Osborne Street exit, left on Foothill Boulevard, left (west) on Van Nuys Boulevard, right (north) on Arleta, continue on Devonshire, right (north) on Tampa to westbound Simi Valley Freeway.

13. Northbound I-405 from Devonshire to I-5 is open. Northbound I-405 connector to eastbound I-10 is open.

14. All northbound I-405 connector lanes to westbound and eastbound Simi Valley Freeway (California 118) are closed because of structural damage.

Primary alternate: Exit at Devonshire, left (west) on Devonshire, right (north) on Tampa, to westbound Simi Valley Freeway (California 118).

15. All southbound I-405 connector lanes to eastbound and westbound Simi Valley Freeway are closed. Simi Valley Freeway (California 118) is closed from I-210 to Reseda Boulevard. I-405 southbound through-traffic lanes are open. I-405 southbound connector to eastbound I-10 is open.

Primary alternate: Exit right on Rinaldi to Reseda, proceed to westbound Simi Valley Freeway on-ramp.

16: I-5 northbound connector to eastbound Foothill Freeway (I-210) is closed. I-210 westbound connector to northbound I-5 truck lanes is open. I-210 westbound connector to southbound I-5 is closed. I-5 northbound connector to eastbound I-210 is closed.

17. I-5 northbound connectors to eastbound and westbound Simi Valley Freeway (California 118) are closed. I-5 southbound connectors to east and westbound Simi Valley Freeway (California 118) are closed.

Primary alternate: From northbound I-5, exit to westbound Van Nuys, right on Arleta, continue on Devonshire, right to Tampa, to westbound Simi Valley Freeway (California 118).

For freeway information, call (800) 427-7623.

Source: Caltrans, Automobile Club of Southern California and L.A. Dept. of Transportation