The Cold Spring Canyon Arch Bridge in the Santa Ynez Mountains links Santa Barbara, California with Santa Ynez, California. The bridge is signed as part of State Route 154. The current bridge was completed and opened to traffic in 1963 and won awards for engineering, design and beauty. It is currently the 5th-longest span arch bridge of this "supported deck" type in the World. Seismic retrofitting was completed in 1998.
Cold Spring Tavern, originally a stagecoach stop, is approximately 600m south of the bridge's west base in the canyon below, on a stub of Old San Marcos Pass Road (now named Stagecoach Rd.) connecting with SR 154 at Camino Cielo and Paradise Roads.
The bridge causes concern in the Santa Barbara community as the site of dozens of suicides over the years; and barriers have recently been installed to prevent this.