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This was a reconstruction of a road that serves residential, recreational, and natural resource sites. To keep traffic flowing through the project we installed a temporary bypass bridge and traffic signals. Then we constructed a new bridge and multiple river diversions to accommodate the placement of rip rap and rockery walls. The project also included deep culverts, precast concrete retaining walls, excavation, base rock, and paving of the road.
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This project requires extensive traffic control measures. We will remove numerous hazard trees and excavate and dispose of contaminated soils. Rockfall work on slopes is another key element.
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This project furthered habitat creation through the excavation and embankment of wetland dikes and the construction of access roads. Conway worked closely with private, federal, and Native American entities to overcome soft soil conditions and winter weather to complete this project on time.
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An existing sewer line flyover of Johnson Creek was seismically unstable and needed replacement. Construction challenges included limited access, property owner operations, environmentally sensitive areas, tree protection, varying underground conditions, winter weather, and high stream flows. Conway collaborated closely with engineers and the owner to improve the constructability of the drawings and develop a plan to navigate all obstacles. The result was a project completed on time and to the owner’s satisfaction.
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This project involved three distinct elements: 1) conversion of two miles of the historic Columbia River highway into a paved bicycle and pedestrian path; 2) replacement of an existing campground; 3) extensive renovation of an existing maintenance building and yard. Some of the many, and widely varying, facets included: 1) clearing; 2) rock excavation; 3) earthwork; 4) grading and paving; 5) erosion and sediment control; 6) traffic control on Interstate 84; 7) concrete median barrier; 8) underground utilities; 9) building construction; 10) rockery and stone masonry walls; 11) MSE walls; 12) gabion walls; 13) lined and painted cast-in-place concrete walls; 14) a septic and fuel systems; 15) wood, concrete, and metal railings; 16) rockfall; 17) and much more. The contract allowed 3 years for completion, but Conway finished in a little over half that time.
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Conway restored a substantial soldier pile and timber lagging retaining wall as well as associated sitework. Conway completed the job ahead of schedule.
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To arrest a slow-moving landslide that jeopardized Highway US20, Conway constructed a four hundred foot long by 40-foot-tall soldier pile and timber lagging retaining wall with a cast-in-place concrete facing. Conway performed the work under live traffic and during a winter of record rain and snowfall yet finished on time.
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Conway performed the work under live traffic during winter conditions and completed it on time.
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Each year over three million visitors pass through the beautiful Olympic National Park. Conway reconstructed and updated the entrance through which they drive. Visitors were able to safely pass through the construction zone while Conway completed the job on time.
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An endangered fish is sacred to native Americans near Klamath Lake. Conway created habitat and breeding areas by excavating channels and ponds within a wetland. This required sediment containment and the construction of temporary timber-mat access roads out into the lake. Conway completed the project ahead of schedule and earned an environmental excellence award.
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Each year upwards of 500,000 people visit the Yaquina Outstanding Natural Area. The lighthouse and surrounding observation deck give access to panoramic views of the Pacific Ocean and the inland coast range. Conway replaced the deteriorating wood deck with a custom structure of cast-in-place concrete, basalt masonry, and metal and wood hand-railings. Though rainy conditions were a challenge, Conway completed the project on time.
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The Oneonta Tunnel originally opened in 1914 as part of the Historic Columbia River Highway. The 2017 Eagle Creek Fire badly damaged its wood lining. Conway removed the damaged lining and replaced it with rough-sawn Western Red Cedar. We utilized prefabrication techniques to improve quality and expedite completion ahead of schedule.
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Westmoreland Park needed a new pedestrian crossing that would be safe and accessible for park visitors while improving habitat contributing to stream restoration efforts. Conway delivered the bridge on time.
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Added a Turn Lane to OR-22 including sub-excavation, excavation, embankment, culvert extension, aggregate base and paving. Ankeny Hill Nature Center: Built Access Road, Precast Box Culvert, parking lot, drainage, Visitor Contact Building and walking trails.
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This steel-truss bridge is a gateway to Jackson Hole, Wyoming, and Grand Teton National Park, but the bridge deck had deteriorated. At 5,000 feet elevation in the Rocky Mountains the weather window is short and unforgiving. Conway replaced some of the deck and overlayed all of it. We also replaced joints and improved drainage. Conway completed this job under live traffic and on time, just prior to winter snowfall.
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Conway Construction completed the concrete bridge overlays of two bridges in Yakima County within the 50 working day construction schedule by performing work 6 days a week, often employing two shifts a day.
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Mountain roads in steep, remote terrain make for challenging working conditions. Conway accepted this challenge and timely completed the project.
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Conway constructed a crane pad with settling plates to aid construction of other structural work. Conway completed this project on time.
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With annual traffic crossings averaging about 1.6 million vehicles, The Bridge of the Gods plays an important role in the regional economy on both sides of the Columbia River. Working under live traffic, Conway overlayed the concrete approach deck on the north side. Conway completed this job under live traffic and on time.
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This was another mountain road project in steep, remote terrain that made for challenging working conditions. Again, Conway accepted the challenge and timely completed the project.
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Deterioration of a smaller, existing metal culvert threatened an existing roadway embankment. Conway replaced this culvert with a larger, multi-plate, arch culvert. Conway completed this job on time.
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Winter weather in the Columbia Gorge can be unpredictable, rapidly changing, and hazardous. It was during such conditions that Conway implemented many logistical techniques in widening numerous spots along an eighty mile stretch of Interstate 84. We simultaneously replaced cast-in-place concrete guardrails on multiple bridges. Work was performed under live traffic and completed on time.
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Staircase Road is in the southeastern corner of the Olympic National Park. It is the only access to a campground bearing the same name. While maintaining access for park personnel, Conway constructed underground utilities and renovated the road. Conway completed this job on time.
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Conway renovated railings and culverts at two existing bridges. Conway completed this job under live traffic and on time.
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Wave erosion of an island in the Columbia River threatened archeological sites. Conway stabilized banks and completed the project on time.
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Conway completed this job on time.
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This bridge renovation required night work and Conway completed it on time.
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Conway Construction diverted the Cispus River, Repaired the damaged roadway washed away by the river, Installed two precast concrete box culverts, two large culverts and performed bridge repair. In total Conway completed 8 sites.
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Conway timely completed this concrete stairway.
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Conway timely completed the replacement of concrete pavement.
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Conway timely constructed two bike shelters.
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Conway reestablished remote forest roads along the Cowlitz River by constructing MSE walls, culverts, revetments, river diversions, and other repairs. Conway completed this job under live traffic and on time.
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Conway timely constructed a bike shelter.
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SR 410 is one of only East/West Crossings in Washington. Due to snow, it is open 6-7 months a year. To minimize the impact to the community and traveling public, the Federal Highway administration required that the project be accelerated. Conway Construction worked 6 days a week to remove asphalt as thick is 4′, perform roadway excavation, build 2,800 square feet of mechanically stabilized earth (MSE) walls, replace culverts, place base rock and pave. Conway Construction met the aggressive project schedule and earned the commendation of both the National Parks Service and the Highway Administration
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Conway built infrastructure to protect the abutments of an existing bridge. Conway completed this job on time.
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Conway timely completed this project.
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Timber companies ship logs through the Port of Astoria to points around the globe, but this presents environmental challenges. Conway mitigated wood waste contaminated storm drain run off by constructing a system comprised of pump stations, transmission lines, and treatment ponds. The work required caissons, dewatering, and major earthwork. Conway completed it on time.
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Conway timely constructed this bus stop.
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Conway Construction Company constructed intersection improvements including 2,000 ft of storm sewer, structural shoring, a 20’x 80’ precast storm sewer detention vault, signals, road base, curb, gutter, sidewalk, and paving.
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CCC rehabilitated the Dismal Nitch Rest area with new curbs, sidewalk, paving, interpretive signs, pedestrian railing, decorative curved concrete walls with painted faux stone, topsoil and plantings. CCC accomplished the work under a tight schedule during one of the wettest falls in memory. CCC received commendations from the Federal Highway Administration for their work on the project.
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Ocean windsurfing is so good here that it has become the location for several national championships. However, fifty years of exposure to the salt laden air of the rugged Pacific Ocean had taken its toll on the Pistol River Bridge rendering it seriously deficient. Conway undertook this major bridge renovation and Cathodic Protection project in order the extend the service life of this vital link to the Southern Oregon Coast. Cathodic Repairs included removal and replacement of 1,100 square yards of damaged concrete, repair of over 700 damaged reinforcing bars, elimination of discontinuous reinforcing bars, removal of near surface metals, installation of zinc annode coating, and DC power distribution and remote monitor system wiring. In addition, Conway replaced the bridge bearings, replaced 1,100 feet of concrete bridge rail, installed seismic restraints and installed a silica fume overlay. Further, Conway redesigned the Agency’s traffic control plan, setting a model for future projects and saving Oregon tax payers over $300,000. The project was significant as it was one of the first non-historic bridges in Oregon to receive cathodic protection and repairs in lieu of replacement.
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In yet another encounter with the Cowlitz River, Conway installed turbidity curtains and constructed a revetment, including gores and plantings, along a bend in the river where erosion was threatening a highway. Conway completed this project well ahead of schedule and on budget, while complying with the many environmental regulations of the local, state, and federal permits.
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This project involved rockfall and slope stabilization between residences above a steep slope and a busy road below. Conway completed the work on time.
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The USACE called on a Thursday to announce its award of this contract to Conway Construction Company. Conway Construction Company was on the ground working by Saturday of the same week. CCC provided four 86,000lb-95,000lb excavators, five dump trucks, a water truck and grader to perform the work.
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A Sewer, water, storm drain, and roadway construction project which Conway completed on time.
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15th Ave is a vital link to the Ballard District. Minimization of traffic impacts was a top priority for the City. CCC addressed this priority limiting closures and accelerating the work CCC safely removed the existing girder and set the new girder in one weekend with 2 night closures. CCC accelerated the work, finishing the project 20 working days faster.
Clink the link below to watch a 2 minute video of the project produced by the Seattle Department of Transportation:
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This project included the assembly of a unique structure which represents earthquake damaged buildings as a venue for emergency training. Conway performed extensive analysis and CAD drawings in order to assure the structure fit as designed. Conway beat the schedule for this demanding process and earned the accolades of the Oregon Military for a job well done.
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Conway completed these bus stops on time.
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The work consisted of the complete replacement of the concrete deck and rails of an existing bridge. Conway completed it on time.
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The Cougar Creek Bridge was a 26′ timber span sitting on mortared rock abutments built in 1926 that had outrun its service life. Conway Construction replaced the existing bridge with a new 60′ concrete span that allowed for a wider roadway. In addition, the creek channel was returned to a natural state not possible with the narrow existing structure. To do this, CCC had to divert the Cougar Creek through a bypass during an in-water work period. CCC also replaced the roadway approaches and installed drainage which included over 300 yards of rock excavation.
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At 237-feet long, this covered bridge is the second longest in Oregon. Opened in 1938, time had taken a toll. Conway rehabilitated it by first installing internal, 160-foot-long steel trusses. We then transferred loads to the steel trusses and replaced structural elements of the wooden trusses.The work was performed during live traffic and completed on time.
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This was a bridge rehabilitation completed under live traffic and on time.
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This was a bridge rehabilitation that Conway completed under live traffic and on time.
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Extensive bridge rehabilitation performed under live traffic.
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This was a structural rehabilitation and cathodic protection project. Conway completed it under live US 101 traffic and on time.
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Conway Construction Company rehabilitated four bridges along the scenic Rogue River and Umpqua highways. Work included historic concrete bridge rail and cantilever removal and replacement, steel bridge rail installation, bridge jacking and bearing replacement, seismic strengthening, timber cap removal and replacement, crack injection, Silica Fume Overlay, drainage improvements and roadway improvements. CCC completed this challenging project on time by meeting challenging on time and budget problems with creative solutions. For example, CCC found a way to place the second stage of the Silica Fume overlay in November at 4,000 feet elevation with nighttime freezing temperatures while meeting ODOT’s stringent cold weather curing requirements.
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At 2,281 feet long the Usk Bridge spans the Pend Orielle River one hour North of Spokane, WA. The length of the bridge, coupled with the requirement to maintain one lane of traffic during construction, posed significant logistical challenges. Conway completed the hydrodemolition of the bridge deck, silica fume overlay, bridge joint replacement, damaged concrete repairs, wood pile splice and wood pile FRP wraps on time and budget. To satisfy traffic restraints, Conway performed the hydrodemolition next to live traffic while protecting the traveling public from flying debris. Over the course of the project, Conway processed over one million gallons of contaminated water resulting from the hydrodemolition of the bridge deck.
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With five bridge deck overlays in two stages each and 70 calendars days to complete the project, its no wonder we didn’t have time to take pictures. CCC self performed the hydro-demolition, silica fume overlay and incidental bridge repair on this project. Conway completed this project just before the onset of a cold Idaho winter.
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The North Going Street Bridge has been identified by the City of Portland as a vital economic link for the area. Through ODOT, the City contracted with Conway Construction Company to perform seismic upgrades and repairs to the bridge to ensure access to the Swan Island industrial area after a seismic event. CCC performed traffic control, removed the impact panels for drilled shaft placement, replaced the panels, installed resin bonded dowels for a new rebar deck mat, overlayed the entire bridge with microsilica concrete, installed two tube steel rail and pedestrian rail, removed the existing sidewalk from atop precast box girders and replaced the sidewalk with a 8′ multi use lane.
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Conway performed repairs to five bridges, installed a 20′ tall soil nail/cast in place concrete retaining wall with custom imprints, installed cast-in-place concrete barrier, and performed roadwork. Bridge improvements included installing reinforced shear walls against the existing box girder stems from inside the box girder, seismic blocks, and FRP. Conway self-performed installation and post tensioning of a reinforced concrete girder bridge for this project. The project was completed in less than 6 months – 4 months ahead of schedule
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An existing metal culvert was deteriorating and thereby threatening US 101. Conway removed the existing culvert and constructed a new concrete bridge. Conway completed this project under live traffic and on time.
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Conway Construction Company replaced a segmental Bailey Bridge over a canal in Central Washington with a 150′ bulb tee girder for Grant County Public Works. The girders weighed close to 200,000 lbs each and required a detailed a technical picking plan which was successfully executed by Conway performed by CCC and its sub-contractor Axis Crane. CCC completed the contract within a 50 calender time frame beginning after the canal was drained in the fall.
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Conway constructed this 27,000 square-foot, cast in place concrete skate park and associated street improvements. The park has since earned the rank of second-best skate park in the state by the Seattle Times and one of the nation’s top ten skate parks by Best of American Towns. Conway completed the project on time.
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Conway completed this job under live traffic and on time.
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Enduring hot, dry weather and heavy traffic, Conway overlayed the concrete decks of two bridges. Conway completed this job under live traffic and on time.
