This family-oriented show provides an energetic overview of the building of the Central Pacific railroad in the late 1800s, with an emphasis on laying rails from Sacramento through the Sierra. The script complements what kids usually see during a visit to the California Railroad History Museum in Old Sacramento and the action is presented in a snappy vaudeville style. The catchy music by Noah Agruss and the resourceful performance by big Rick Kleber are highlights. Sa, Su 1 pm and 4pm. Through 4/2. $18-$23. B Street Theatre, 2711 B Street; (916) 443-5300, www.bstreettheatre.org. J.H.