PACIFICA (CBS SF) – Traffic was flowing smoothly through California’s newest tunnel system at Devil’s Slide in San Mateo County Tuesday, a California Highway Patrol officer said.

Beginning at about 2 a.m. Wednesday, traffic was permanently redirected away from a notorious cliffside stretch of state Highway 1 south of Pacifica and steered instead into the Tom Lantos Tunnels, CHP Officer Mike Ferguson said.

There have been no reports of any problems, he said.

The tunnels, a pair of north- and southbound bores that run 4,200 feet through San Pedro Mountain, are California’s longest tunnels and are the first to open in the state since the Caldecott Tunnel was unveiled in Oakland in 1964, according to Caltrans.

The cost of the project, which took more than six years to complete, was approximately $439 million. More than 21,000 truckloads of dirt and rock was removed from the mountain during construction, Caltrans officials said.

The tunnels replace a nearly mile-and-a-half stretch of steep and winding Highway 1 above the Pacific Ocean that has long been prone to crashes, landslides and long term-closures.

That section of highway is slated to be converted to a hiking and biking trail that will be maintained by San Mateo County.

The tunnels were named for the late Congressman Tom Lantos.

Related Content: Latest Bay Area Traffic Conditions

(Copyright 2013 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)


Leave a Reply

Please log in using one of these methods to post your comment:

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

More From CBS San Francisco

Get The New CBS SF Bay Area Local App
LIVE: Monday through Friday from 3am – 3pm PST

Watch & Listen LIVE