Noun
In railroads, the bed or foundation on which the superstructure (ties, rails, etc.) rests; in common roads, the whole material laid in place and ready for travel.
Source: Webster's dictionaryAlmost all of the roadbed work had to be done manually, using shovels, picks, axes, two-wheeled dump carts, wheelbarrows, ropes, scrapers, etc., with initially only black powder available for blasting. Source: Internet
As we walked and got closer to the large ditch, which was tunneled under the M-25 roadbed, we saw lots of gas lanterns and 20 or more people dipping smelt. Source: Internet
The manual labor to build the Central Pacific's roadbed, bridges and tunnels was done primarily by many thousands of emigrant workers from China under the direction of skilled non-Chinese supervisors. Source: Internet
Two years ago this month, a stretch of roadbed collapsed on Genoa's Morandi Bridge, sending cars and trucks plunging to dry riverbed below and ending 43 lives. Source: Internet
If politicians determine that roadbed hazards should be constructed to slow the speed of drivers below the posted speed limit, aren’t they implying by their actions that all drivers are speeders, since all drivers will be slowed by these hazards? Source: Internet
Moored ships could then either unload their cargo directly onto the roadbed or lower it down onto waiting vehicles via their heavy-duty booms. Source: Internet