Editing Caldecott Tunnel (section)

{{Short description|Highway tunnel between Oakland and Orinda, California}}
{{About|the road tunnel|the rail tunnel|Berkeley Hills Tunnel}}
{{Infobox tunnel
|name = Caldecott Tunnel
|image = Western portals of the Caldecott Tunnel, May 2019.JPG
|image_size = 300px
|caption = The western end of the Caldecott Tunnel in 2019
|line =
|location = [[Oakland, California|Oakland]] / [[Contra Costa County, California|Contra Costa County]], [[California]]
|coordinates = {{Coord|37.8548|-122.2166|region:US_type:landmark}}
|route = {{jct|state=CA|CA|24|name1=William Byron Rumford Freeway}}
|status =
|crosses = [[Berkeley Hills]]
|start = Near Caldecott Lane
|end = Fish Ranch Road
|startwork =
|opened = Bores 1 & 2: 1937<br />Bore 3: 1964<br />Bore 4: 2013
|close =
|owner =
|operator = [[California Department of Transportation|Caltrans]]
|character =
|construction = 
|length = Bores 1 & 2: 3,610 ft (1,100&nbsp;m)<br />Bore 3: 3,771 ft (1,149&nbsp;m)<br />Bore 4: 3,389 ft (1,033&nbsp;m)
|lanes = 2 per bore
|speed =
|hielevation =
|lowelevation =
|height = Bore 1: {{convert|14.58|ft|m}} <br /> Bore 2: {{convert|14.5|ft|m}} <br /> Bore 3: {{convert|15.5|ft|m}} <br /> Bore 4: {{convert|15.5|ft|m}}
|width =
|grade =
|map = {{maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|zoom=14|type=point}}
| embedded           ={{designation list|embed=yes|designation1=ODL|designation1_number=32|designation1_date=1980}}
}}

The '''Caldecott Tunnel''' is a four-bore highway [[tunnel]] through the [[Berkeley Hills]] between [[Oakland, California|Oakland]] and [[Orinda, California]]. Its four bores carry [[California State Route 24]]. Named after [[Thomas E. Caldecott]], former mayor of [[Berkeley, California|Berkeley]], it opened in 1937 as a two-bore tunnel. The third bore opened in 1964 and the fourth bore in 2013. Currently, the two oldest bores carry eastbound traffic and the two newest bores carry westbound traffic.