The California Department of Transportation (Caltrans) plans to close the ramps, lanes and connector listed below as part of a $140 million improvement project to construct High Occupancy Vehicle (HOV or carpool) lanes and a direct HOV lane connector at the I-5/SR-170 interchange.

Ramp closures will be staggered. Closures are subject to change. Detours will be signed.

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Golden State Freeway (I-5)

Sunday, January 8, to Friday, January 13

Up to three lanes of northbound I-5 between SR-170 and Paxton Street

TIME: 9 p.m. to 6 a.m.

Westbound Osborne Street on-ramp to northbound I-5

TIME: 9 a.m. to 3 p.m. and 9 p.m. to 6 a.m.

Up to three lanes of southbound I-5 between SR-170 and SR-118

TIME: 9 p.m. to 6 a.m.

Southbound I-5 off-ramp to eastbound/westbound Osborne Street

TIME: 9 a.m. to 3 p.m. and 9 p.m. to 6 a.m.

Eastbound Osborne Street on-ramp to southbound I-5

TIME: 9 a.m. to 3 p.m. and 9 p.m. to 6 a.m.

Westbound Osborne Street on-ramp to southbound I-5

TIME: 9 a.m. to 3 p.m. and 9 p.m. to 6 a.m.

Long-term on-ramp closures:

Eastbound Osborne Street to northbound I-5 (open September 2012)

Branford Street to southbound I-5 (open July 2012)

Long-term off-ramp closures:

Northbound I-5 to Osborne Street (open March 2012)

Southbound I-5 to eastbound/westbound Paxton Street (open March 2012)

Northbound I-5 to Sheldon Street (open March 2012)

Caltrans is constructing an HOV lane in each direction on I-5 between the Hollywood Freeway (SR-170) and SR-118, a distance of 6.8 miles (3.4 miles in each direction). The project is also widening four undercrossings, replacing sections of pavement, and building a direct HOV connector at the I-5/SR-170 interchange. A direct HOV connector allows for freeway-to-freeway transfers without exiting the carpool lane.

This project will alleviate congestion, encourage carpooling, improve air quality, and provide a smoother ride for motorists. The work is part of Caltrans’ effort to provide motorists with a seamless carpool lane network in California.

Work began in August 2010 and is on track for completion in late 2013. Caltrans thanks motorists for their patience and understanding during construction.

For more information, visit www.I-5info.com.