Comparative evidence for Drury Lane's 1674 design can be found in the Theatre Royal, Bristol, built in 1766, whose design was modelled, in part, on Drury Lane's. The site measured east-west and north-south. The building was smaller than this, as reliable surveys and maps of the period show three passageways measuring between wide surrounding the Theatre Royal on three sides. The building probably measured between wide (the average width of all "Restoration" Theatres) and between long. Architect Robert Adam designed Drury Lane's 1674 interior. The theatre was managed, from 1747 to Adam's retirement in the 1770s, by David Garrick.