At present, the catalogue of early mediaval bridges in the nort-western part of territory with Slavic settlement contains 81 localities: 47 in Germany and 34 in Poland. In some of them more than one bridge (2 to 3 structure) was documented, bringing the total number of bridges to 101. Construction dates, different prhases in the lives of the bridges and dates ranges for when they were reapired were obtained based on dendrochronology and spartial-chronological analysis. The present anaylsis deals with 48 bridges from 37 localities in north-west Slavic territory: 22 in Germany and 16 in Poland. In 16 cases more or less probable reconstructions have been made and four basic types of bridges ascertained., Gerard Wilke., and Obsahuje seznam literatury