Excavations carried out since 2005 on the main North-South Colonnaded Street of Sagalassos have uncovered a ca. 90 m long stretch of pavement to the south of the Lower Agora. Though we are beginning to get a clearer idea of the complexity of actions in the area, many issues remain unsolved. Most of the already attested actions can not yet be dated or put in a relative order. During the campaign of 2010, the already exposed remains will therefore be studied further. In addition, we would like to execute some small-scale soundings underneath the pavement of the street.