Calculation of scour depth at the Parks Highway Bridge on the Tanana River at Nenana, Alaska, using one- and two-dimensional hydraulic models

Abstract

Grain size in streambed sediments is given in millimeters (mm). Slope is given in feet per foot (ft/ft). Datums Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29). Horizontal coordinate information was arbitrarily set at time of survey.

Measurement of long-term channel change through repeated cross-section surveys at bridge crossings in Alaska

“…Tanana River is a glacially fed river with headwaters in the Alaska Range. The river crossing at Nenana is hydraulically complex owing to the confluence of the Nenana River downstream of the bridge and the division of the main channel by an island into a main flow and an adjacent slough (Langley, 2006). The main pier on the bridge also is oriented about 15 degrees to flow.…”