Bearings are structural devices between the bridge superstructure and substructure that transmit loads and accommodate movements. There are two main types of bearings: fixed bearings that are fixed against translation but allow rotation, and expansion bearings that allow both translation and rotation. Selection depends on factors like superstructure type, substructure supports, and span length. Bearings are important components that require careful design, skilled construction, and regular maintenance to prevent failures inducing high stresses. Common bearing types include sliding plate, roller, rocker, elastomeric, and lead rubber bearings. Railings along bridge edges protect traffic and pedestrians, and come in traffic, pedestrian, and combination varieties depending on the bridge use and design speeds.