We evaluated a 1^st order tributary to the Big Manistee River.  Following perched culvert replacement (Summer ’05), a shift in Mottled Sculpin (Cottus bairdi) distribution (upstream versus downstream) was observed.  Pre-restoration, 31% of sculpin were captured upstream of the culvert.  Post-restoration, 58% were captured upstream of the new bridge.  95 Sculpin were captured from eight 100m reaches (10 each from 5 downstream reaches, and ~15 each from 3 upstream reaches).  Fish were measured, weighed, implanted with a PIT tag and released.  48 of 88 (7 dropped tags) individuals (54.5%) were recaptured at least once.  Results indicate individual fish moved as much as 660m.  Post-restoration, several habitat variables were compared between downstream and upstream reaches, including surficial sediment composition and water depth and velocity.  Significant difference was detected for key habitat variables. Surber samples were taken in the spring (3 at each of 3 up- and 3 downstream transects), 2 years pre- and 2 years post-restoration.  Pre-restoration, average macroinvertebrate abundance per m² was 149 upstream, and 286 downstream (434 total).  Post restoration, the values were 254 upstream, and 189 downstream (443 total).  From a management perspective, our results indicate removing undersized, perched culverts can have multiple positive impacts on fish communities.