They have (overlapping) expansion joints that allows the span to shrink and stretch w/o forming a big gap.
Deal railway station was created in 1847.
Perhaps the experience of Union General Don Carlos Buell as he could only march slowly to Chattanooga in 1862, was to become a dominant theme in the West that Union generals had to deal with. The impediment in the West was the guerrilla raids that were constantly cutting supply and communications lines. The Union was forced to deploy thousands of troops to protect the railway lines, as one example. The Confederate raiders were aided by Tennessee sympathizers and so often the raiders easily burned down railway bridges and intercepted supplies.
New Deal
Two major forces that bridges deal with are compression and tension. Compression forces act to push or squeeze the material together, while tension forces act to pull the material apart. Bridges are designed to distribute these forces to ensure the structure can support the weight it carries.
Roads, railways, bridges, tunnels, harbours, dams, sea-defences...
public works authority
An expansion joint is used in construction to help deal with the effects of building materials expanding and contracting. They can be purchased through hardware stores like Home Depot.
you know the deal
an expansion of a federal welfare system and a reduction of state and local aid
Some radiators have the coolant lines and the trans lines going into them. So, it may be a one unit deal.
Sidewalks are designed with expansion joints or gaps to accommodate thermal expansion without causing damage. These gaps allow the concrete to expand and contract with temperature changes, preventing cracks and distortion in the sidewalk surface. Additionally, materials with lower thermal expansion coefficients may be used to minimize the effects of temperature fluctuations on the sidewalk.