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SOMETHING OLD AND SOMETHING NEW: Four High Profile Projects

SOMETHING OLD AND SOMETHING NEW: Four High Profile Projects

Four new projects awarded to Hamilton in late 2015 demonstrate the value of our reputation for successfully tackling tough, technical jobs. In two cases we were selected as the best value contractor for CM/GC (Construction Management/General Contractor) projects. This allows Hamilton the opportunity to participate during the design phase offering insights on constructability and best approach. One project involves rehabilitation of something old—the century old Broadway Bridge in Portland, Oregon; the other three, something new—an overpass near the University in Fairbanks, Alaska; a new bridge over the Slana River about a hundred miles northeast of Anchorage; and Alaska’s first Diverging Diamond Interchange also in Anchorage

Article: Broadway Bridge Repair The Broadway Bridge Repair will team Hamilton with Multnomah County and Hardesty Hanover engineers (working with OBEC Consulting Engineers) to replace and repair elements of the draw bridge mechanisms on this 103-year old structure. The toughest part of this project according to Hamilton Project Manager Evan Stuart will be the replacement of the massive 7,000 lb. rall wheel. This wheel enables the draw bridge to open up and roll back every time a ship passes through on the Willamette River. In service since 1912, both the wheel and its track have become worn and pitted, creating concerns it could jam or come off track. As Evan points out, the first task of the team will be to develop a fail proof method for supporting the massive structure during the rall wheel replacement. Safety and minimizing inconvenience to the public will be top priorities. Given its downtown location and heavy use by pedestrians and bicyclists, traffic control is a major focus. Planning and engineering for the project is currently underway. Construction is likely to begin late fall of 2016.

University Avenue — Fairbanks, Alaska Hamilton’s other new CM/GC project involves plans to rehabilitate and widen University Avenue in Fairbanks, Alaska from the Mitchell Expressway south past the Chena River and replacing the Chena River Bridge crossing. The Alaska Department of Transportation & Public Facilities (ADOT&PF) project presents many challenges including acquisition of property, relocation of utilities, and replacement of a bridge on a busy transportation corridor. Hamilton Construction Alaska is partnering with Great Northwest Inc. (GNI), a well-known Alaskan heavy highway contractor to build the project. Hamilton worked closely with Great Northwest to successfully complete the Riley Creek bridge project at the entrance to Denali National Park on the Richardson Hwy. in 2015. Riley Creek was completed a season ahead of schedule, a fact that did not hurt our chances to win this job. GNI will provide project management; Hamilton Alaska’s John Szymik will take the lead as the structures superintendent and Chief Estimator Neal Spoon will round out the CMGC team.

Tok Cutoff MP 75.6 Slana River Bridge This project replaces the existing Slana River Bridge on the Tok Cutoff. New bridge is a pile founded two span 224’ long precast deck girder structure. Traffic staging requires the use of a temporary detour bridge as well as some temporary work bridge. Construction will start mid-summer next year with detour bridge construction and existing bridge demolition. Work on the job will complete in 2017.

Glenn Highway and Muldoon Road Interchange Improvements In Alaska, Hamilton will work with Neeser Construction to provide the structural work on a project which replaces the existing Muldoon Road Interchange on the Glenn Highway near Anchorage. This interchange is a major gateway to Anchorage at its northern most junction. For the first time in Alaska, a Diverging Diamond Interchange (similar to the Hamilton’s project at Fern Valley in Medford, OR) will replace the existing cloverleaf. The bridge work includes parallel two-span, 222’ long bridges founded on driven H-pile at the abutments and 36” steel pipe pile at the bents in the median. The superstructure consists of AKDOT standard 54” Deck Bulb-T girders with an asphalt overlay and waterproofing membrane. Additional work includes ornamental pedestrian bridge railing, cast-in-place concrete coping and barrier rail for the MSE Walls. Foundation construction for the bents will occur in summer of 2016 along with the coping and barrier rail on the MSE walls. The abutment and superstructure work will commence in spring of 2017 and be completed in fall of 2017.

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