Named for the Caldecott Tunnel (Lamorinda’s gateway), Fourth Bore is Theatre Square’s craft beer destination. With 28 rotating taps and solid pub grub, it’s the spot for catching a game, meeting friends, or grabbing a drink before or after a movie at the Orinda Theatre next door.
The Beer
28 craft beers on tap, rotating regularly. The selection skews local and California craft-forward — expect to find options from East Bay breweries alongside regional favorites. If you’re not sure what to order, the staff knows their taps.
Beyond Beer
The grill menu covers comfort food essentials — burgers, pizza, and shareable appetizers done well. This is pub food with care, not an afterthought. Good for groups, good for casual nights.
Live Music
Here’s what sets Fourth Bore apart from your typical tap room: live music roughly 8 months a year. Check their website or social media for the current schedule. It adds real energy to an already lively space.
The Fun Part
The owners also run The Forge Pizza Fire Truck — a 1970 Ford fire truck converted into a mobile wood-fired pizza operation with a char broiler and beer on draft. They cater private events. Yes, seriously. Check out theforgepizzafiretruck.com if you want a fire truck serving pizza at your next party.
Local Lore: Why “Fourth Bore”?
The Caldecott Tunnel is Lamorinda’s gateway — four tubes (called “bores”) carrying Highway 24 through the hills between Oakland and Orinda. For decades there were only three bores, creating legendary traffic bottlenecks. The fourth bore finally opened in 2013 after years of construction, adding much-needed capacity. The restaurant’s name is a tribute to this local milestone — and a nod to the relief everyone felt when that fourth tube finally opened.
Seasonal Note: Memorial Day Weekend 2026
With Memorial Day weekend (May 23–25) ushering in the unofficial start of summer, Theatre Square hits its stride. Sunsets now stretch past 8:15pm, afternoons settle in the upper 70s, and the patio holds its warmth well into evening. Giants and A’s interleague play is in full swing on the TVs inside, and 28 rotating taps give plenty of reason to linger. The Friday-Saturday after-movie crowd from the Orinda Theatre next door starts building around 9pm — get there earlier if you want a relaxed patio table. If you’re walking the long way home, the Caldecott bores (the actual fourth bore included) hum steadily in the distance: a fitting soundtrack for the tap room named after them.
Good to Know
- Located in Theatre Square — grab a beer before or after a movie
- Casual, lively atmosphere — not a quiet date night spot
- Great for groups and sports viewing (TVs throughout)
- Outdoor patio seating available
- Reservations not required but can book for larger groups