Safety threats from collapsing concrete have closed Terminal Island prison, with nearly 1,000 inmates now being moved to ...

What began as a simple search for drainage tunnels turned into a descent beneath the city — a maze of concrete chambers, rusted pipes, and air so stale it felt untouched for decades. When the team ...

The district, trying to meet a state regulation, can’t operate all its hydrogen buses due to the expensive cost of fuel.

Bridges are an underrated piece of architecture. When people think of engineering marvels, they’re more likely to think of ...

The Federal Correctional Institution Terminal Island is closing due to crumbling underground tunnels and other infrastructure ...

A team of artists have transformed the once grey, stagnant pedestrian tunnel at the Oceanside Transit Center into a work of art.

Two bores in the Caldecott Tunnel, carrying state Highway 24 between Alameda and Contra Costa counties, will take turns being ...

California has no shortage of geological marvels, many tucked within one of the state’s national parks. But to view a fossilized, dry waterfall formed hundreds of thousands of years ago from an ...

An appeal submitted last week may pause the Delta Conveyance Project (DCP) if the Delta Stewardship Council, the state body charged with implementing a Delta sustainability plan, upholds ...