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.
Graduation Week Tip: June 11–14, 2026
Tonight is Acalanes commencement (Thursday June 11, 5pm at the Lafayette campus) and the second AUHSD party Saturday is June 13 (the Miramonte/Campolindo tail). Theatre Square sits a ten-minute drive from the Acalanes ceremony and is the natural Orinda decompression stop for Miramonte families heading home from the Pleasant Hill Road exodus. Tonight after 7:30pm the patio fills with grad-cap-and-gown leftovers; tomorrow evening (Friday June 12) is the calm beat between commencement and Saturday’s parties — easiest patio walk-in of the week. Saturday June 13 is the harder night: party-host parents drop in for a late-evening beer around 9–10pm, and the Friday-Saturday after-movie crowd from the Orinda Theatre next door overlaps. Sunday June 14 settles back into long-evening rhythm — sunsets stretching past 8:32pm, afternoons in the upper 70s, the patio holding warmth well into evening. Giants and A’s interleague play is on the TVs inside, and 28 rotating taps give plenty of reason to linger. 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
Pair It With
- Before: Grab a craft beer here, then walk five minutes around the corner to the historic Orinda Theatre for an early showing. Theatre Square’s parking lot is the same lot — no second move required.
- Instead of: If you want the opposite of the tap room — quieter, dimmer, no TVs, fried chicken instead of pub grub — Casa Orinda is the in-town counterpart. Same 1932-vs-modern split that defines Orinda dining: Fourth Bore is the lively Theatre Square 28-tap option, Casa is the 90-year-old roadhouse on Bryant Way three minutes away. Casa is closed Mon-Tue, so on those nights Fourth Bore handles the casual-dinner overflow.
- After: Post-game (or post-graduation) nightcap on the patio works year-round; in early summer the 8:32pm sunset means you can stretch a 9pm beer well past dark before the after-movie crowd arrives.