Noun
the deck below the main deck
Source: WordNetAfter the Bay Bridge was built, the Key trains ran to the Transbay Terminal in San Francisco, sharing tracks on the lower deck of the Bay Bridge with the SP's red trains and the Sacramento Northern Railroad. Source: Internet
As on previous 747 freighters, the 747-8F features an overhead nose-door and a side-door on the main deck plus a side-door on the lower deck ("belly") to aid loading and unloading. Source: Internet
Describing the sitting arrangement on the buses, Sunny was quoted as saying the lower deck was the preserve of reasonable people, of families and of the elderly while the back seats were not just for the head rest but for peace of mind. Source: Internet
Soon after the completion of the Bay Bridge, Alameda trains ran directly to San Francisco on the lower deck of the bridge, the ferries having been rendered unnecessary. Source: Internet
The east span of the San Francisco–Oakland Bay Bridge also suffered damage from the quake when a 50-foot (15-m) section of the upper deck collapsed onto the lower deck; the damaged section was repaired within a month of the earthquake. Source: Internet
The cloud layer is only about convert deep, and consists of at least two decks of clouds: a thick lower deck and a thin clearer region. Source: Internet