TY - RPRT TI - Level II scour analysis for Bridge 99 (LUDLVT01000099) on State Highway 99, crossing Branch Brook, Ludlow, Vermont AU - Scott A. Olson PY - 1996 DO - 10.3133/ofr96572 UR - https://pubs.usgs.gov/publication/ofr96572 ID - ofr96572 ER -