Bridges and Tunnels
Triangle Truss Pedestrian Bridge
The Triangle Truss Bridge project was the improvements of one of the pedestrian bridges in River Front Park in Spokane, WA. The improvements consisted of approximately 3440 square feet of bridge deck replacement with Ekki Wood and other related miscellaneous items.
Strong Creek Bridge
The Strong Creek Bridge Replacement project was the replacement of the Strong Creek Bridge on HWY-200B in East Hope, ID. The existing bridge required demolition over a protected waterway. Precast voided slabs were placed between two cast-in-place abutments. The project shutdown the main street in the city of Hope, so alternate routes including a foot bridge had to be temporarily constructed.
Old Potlatch Bridge
The Gold Creek Bridge on SH-6 just outside of Potlatch, ID, utilized voided precast girders in conjunction with UHPC locking keyways to provide a efficient and economical product in a short time frame. Liaison between Scarsella and subcontractors required exceptional organization and communication methods to ensure the bridge could be constructed in a 12 week window
WSU Tunnel 2018
The WSU College Avenue Steam Tunnel Lid Repair included the removal and replacement of a concrete utility tunnel lid structure at multiple locations on the Pullman Campus of WSU.
Rock Creek Bridge Repair
The Rock Creek Bridge Repair project was a bridge repair on a utilitarian concrete girder bridge that was originally built in 1965 spanning the Palouse River near Potlatch, ID, that was closed in January 2017. The timber piles that supported the concrete piers were rotting away and needed replacement. Construction involved temporary shoring of the bridge, replacing seven of the existing piles with new steel piles and seven of the existing wood piles to be wrapped in fiberglass.
EWU Utility Tunnel
The EWU PUB to ISC Utility Tunnel project included the construction of a new 240 foot underground precast concrete utility tunnel. The tunnel has to stay dry inside to accommodate the electrical and mechanical gear, despite the fact that it sits below the static water table. Ground water pumping was required to lower the water table and allow for tunnel construction. Utilities housed include a steam supply, condensate return lines, a chilled water supply, drainage system, power distribution, communication conduits and lighting systems.
WSU Todd Hall Addition
The WSU Todd Hall Addition new entry project included the removal of existing planters, expanding the paved area of the plaza, adding a handrail. Additionally, the project included abandoning a stairwell in place, removing and replacing the steam tunnel lid, and enclosing a exterior vestibule to create a continuous interior corridor.
Heiskell Bridge - Priest Lake
The Heiskell Bridge project was the new construction of a bridge and parking platform in Priest Lake.
WSU Steam Tunnel 2013
The WSU Tunnel Lid Rebuild consisted of removing a failing steam tunnel lid along 370 LF of campus sidewalk and replacing it with new cast in place lid. Work included electrical, asphalt, curbs, piping inside the tunnel, and required shoring existing side-tunnels. During construction the existing steam piping was protected and maintained. Asbestos abatement was also required for the steam piping.
US 95 Bridges
The US 95 Bridges/Tunnels Project was a major freeway reconstruction. Clearwater's role in the project was to construct three vehicle bridges, one over a UP railroad mainline and two over the new alignment of US 95. Additionally, Clearwater built a new wildlife tunnel while extending the pedestrian tunnel under US 95. The total cast-in-place concrete on the project was about 4,800 CYs.
Thorn Creek Bridge
The Thorn Creek Bridge project was the replacement of an existing multi-plate pipe with a cast-in-place concrete culvert structure including MSE wing walls along with 600 linear feet roadway paving on a two lane highway, just south of Moscow, Idaho. The new structure included drilling 14 shaft piles. The creek had to be diverted around the work area through use of both gravity pipe and a pump system. The surrounding wetlands had to be protected throughout the project duration.
US 395 BNSF RR Tunnel
The BNSF RR Tunnel project included pouring nearly 11,000 cubic yards of concrete for the tunnel footings and stem walls along with the setting of 444 sections of pre-cast tunnel arch components, weighing 46,000 lbs. The 11,000 CYs of concrete were poured in 13 weeks for an average of about 850 CYs per week. The completed project allows for two tracks of the BNSF RR to pass through more than a ¼ mile of tunnel under the new US-395 freeway.
