The Interstate-90 Snoqualmie Pass East Project involves substantial improvements to handle larger traffic volumes, reduce closures due to avalanches, and improve wildlife connectivity while reducing wildlife-vehicle collisions. From an ecological point of view, there are 24 improvements planned (or already constructed) including two wildlife overpasses, three wildlife underpasses, and a number of culverts being replaced with bridges. The focus of this presentation is to review the effect of these improvements on the movements and habitat connectivity for amphibians living within this area. Radiotracking of Western Toads (Anaxyrus boreas) showed that adults rarely interact with I-90, although juvenile toads are sometimes found in crossing structures containing streams. Western Toads bred in a mitigated wetland close to I-90 only one year after its completion. Genetic analyses are being performed to quantify the effect of I-90 on gene flow in Western Toads and monitor changes as construction is completed. Coastal Tailed Frogs (Ascaphus truei) are likely limited in their movements by hanging culverts that will be replaced in the coming years with small bridges. Aquatic Coastal Giant Salamanders (Dicamptodon tenebrosus) did not cross a concrete box culvert in two years of monitoring but, when the culvert was replaced by a bridge with an artificial streambed, salamanders moved into it 5 days after completion. Initial efforts to monitor terrestrial salamanders (Larch Mountain Salamanders, Plethodon larselli, and the Ensatina, Ensatina escholtzii) will be discussed.