Scour

Landfill bank erosion and river bed restoration, Industrial Client

Northstar Hydro developed a 2-dimensional flow model of a river running adjacent to a non-operational landfill to assess the erosive properties of the river at the landfill embankment and on the river bed.   Over the decades, the river has encroached on the riverbank portion of the landfill and in some locations portions of the landfill […]

Town of Brownville Junction, Culvert Replacement with Fish Passage

Northstar worked with Dirigo Engineering to provide hydrologic and hydraulic engineering at the stream crossing of Front Street in Brownville Junction, Maine. The Town of Brownville proposes to replace the Front Street culvert, removing the existing undersized, perched structure with a larger hydraulically sufficient culvert that would also restore aquatic passage at the site. The existing […]

Design-Build: I-91 Twin Bridges over Williams River in Rockingham, Vermont

Northstar Hydro is part of the Design-Build Team of Reed and Reed and HDR for the replacement of the twin bridges that carry I-91 over the Williams River in Rockingham, Vermont.  NHI provided hydrologic, hydraulic, and scour analysis Northbound and Southbound (NB and SB) bridges  Work completed included hydrologic analysis, hydraulic modeling, and scour analysis […]

Boombridge Bridge, Greenbush Maine

This project involved hydrologic and hydraulic evaluation of Bridge #3587 for the replacement of Route 2 over Boombridge Brook in Greenbush, Maine.  The work was prepared for CLD as part of their preliminary design work for the Maine DOT on a replacement bridge. The bridge is located just upstream of the confluence of Boombridge Brook […]

Design Build: I-91 Twin Bridges over West River, Brattleboro, VT

Subcontractor for hydrologic, hydraulic and scour design services for design-build replacement of I-91 bridges over West River in Brattleboro, Vermont. Design included evaluation of complex pier scour, potential ice effects, and potential for rock scour for major highway bridge over medium sized river. Subcontractor to FIGG Bridge within Design-Build team

Copyright by Northstar Hydro, Inc., 2017