Transportation Projects

South Medford Interchange

The South Medford Interchange project was billed by ODOT to be “the largest highway construction project in Southern Oregon since I-5 was constructed in the 60's”. A completely new interchange was constructed just to the south of the old Barnett Road Interchange. The work included construction of 10 new bridges, new arterial roads and reconstruction of I-5. All roads were open to full traffic 11 months
ahead of schedule.

South Medford Interchange

ODOT
Medford, Oregon
$66 million – Competitive Bid

Tualatin River Bridges – Stafford

The Tualatin River Bridges project replaced two bridges that were considered functionally obsolete and structurally deficient.

The Stafford project site involved replacing an existing 13-span steel and timber supported structure with a new 3-span all concrete structure, improving the roadway alignment and adding bike lanes. The new bridge is a 445-foot long by 55-foot wide structure. The substructure concrete is supported on 24-inch diameter by 100-foot long pipe pile foundation at the end bents and on 6-foot diameter and over 100-foot deep drilled shafts at the interior bents. The superstructure consists of 90-inch tall bulb-T girders spanning up to a 165 feet, and a cast-in-place concrete bridge deck. After the new bridge was open to traffic the existing concrete and steel truss bridge was removed, all working within limited in water work windows.

Tualatin River Bridges – Stafford

Clackamas County
Tualatin River, Oregon
$10.3 million – Competitive Bid

Tualatin River Bridges – Borland

The Tualatin River Bridges project replaced two bridges that were considered functionally obsolete and structurally deficient.

At Borland Road, a narrow weight-restricted bridge was replaced with a new 3-span, 300-foot long by 53-foot wide structure that also satisfied architectural and historic interests of the local community. Construction included temporary detour and work bridges, emolition of the existing bridge, construction of the new bridge and removal of the temporary bridges. The foundation, as originally designed, called for large cofferdams and many steel piles placed in the river. Through a collaborative effort, this was redesigned to drilled shafts, greatly reducing the impact to the river and at a cost savings to the Owner. The columns and bridge rail were designed with architectural details, selected by local interests, as they would be visible from the adjacent park and pedestrian pathway.

Tualatin River Bridges – Borland

Clackamas County
Tualatin River, Oregon
$10.3 million – Competitive Bid

Northwest Lake Bridge Reconstruction

Removal of the Condit Dam on the White Salmon River in Washington required upgrading existing bridge piers to withstand millions of yards of silt and gravel that would be washed downstream. The project included construction of a work bridge, drilling four shafts in solid rock and installing 4- foot round columns and a cast-in-place 6-foot deep cross beam directly under the existing pier caps. Existing columns were sawcut and the existing piers were completely removed from underneath the new cross beam.

Northwest Lake Bridge Reconstruction

PacificCorp
Condit Dam, Washington
$1.2 million – Competitive Bid

I-84 at 15 Mile Creek Bridge Replacement

This replacement of a bridge spanning a 60-foot deep canyon required a detour structure, a demolition containment platform to protect the creek and heavy temporary structural supports for the existing bridge which supported traffic while half of it was removed. The new structure was built in two stages so that the original alignment could be maintained. A unique component of this bridge is the decorative panels suspended from the outside edge of the structure which are similar to those on other historic structures in the columbia River Gorge.

I-84 at 15 Mile Creek Bridge Replacement

ODOT
The Dalles, Oregon
$9.4 million

I-84 Cascade Locks – Hood River Bridge Replacement/Rehabilitation

This project consisted of the replacement of two structures and rehabilitation of four structures including placement of 48-inch precast box beams, attachment of a precast arch façade to the outer box beams, shear dowel placement to the underside of existing bridge girders, fiber wrap placement and post tensioning on existing bridge abutments using up to 50-foot long drilled and grouted tensioning rods, and replacement of the pin and hanger assemblies.

I-84 Cascade Locks – Hood River Bridge Replacement/Rehabilitation

ODOT
Cascade Locks, Oregon
$10M – Competitive Bid

Gibbs Street Pedestrian Bridge Over I-5

This project involved the construction of a 570-foot long pedestrian bridge spanning Interstate 5 and adjacent city streets. Complexities of this project included phasing of the work over Interstate 5, coordination with a streetcar construction project, on-going tram operations, forming elevator shafts and bridge approach structures, installation of elevator and glass facades, setting steel tub girders and an elevated cast-in-place walkway, installation of decorative handrails, and construction of weir walls, steps and a green roof.

Gibbs Street Pedestrian Bridge Over I-5

City of Portland
Portland, Oregon
$8 million – Competitive Bid

I-5 Iowa Street Viaduct Improvements

The Iowa Street Viaduct on Interstate 5 is part of one of the busiest, most accident-prone stretches of interstate in the country. On an average day, more than 130,000 vehicles travel on it. The Oregon Department of Transportation turned to Wildish Standard Paving Co. to handle the challenge associated with improving the viaduct. The most unique aspect was the difficulty providing access to the site in three stages while maintaining three lanes of traffic both ways.
The site spans a canyon with steep sides, allowing access only from either end. In the second stage of the project, there was no room for two cranes, so Wildish designed and built a trolley gantry with a 50-ton chain hoist to set girders.
Throughout the project, crews removed old bridge material, installed new material, and moved concrete trucks and crews to the site without disrupting traffic, finishing the project on time and on budget.

I-5 Iowa Street Viaduct Improvements

ODOT
Portland, Oregon
$38 million – Competitive Bid

I-205 Light Rail South Corridor Green Line

This 6.5 mile light rail alignment between Portland and Clackamas included eight stations, four “park & rides”, seven new bridge structures, two new cut and cover box structures, over 200,000 square feet of retaining wall construction, concrete and recycled rubber tire composite sound walls, resting and ticketing shelters, special pavers, bicycle lockers, and artwork that was specific to each station.

I-205 Light Rail South Corridor Green Line

TriMet, ODOT, City of Portland, Clackamas County
$184 million – Design/Build Joint Venture

Portland International Airport - North Runway Extension

This multi-staged project involved the construction and reconstruction of exit taxiways, milling and replacement of asphalt concrete
surfaces, placement of fill and surcharge for extensions at each end of an existing runway and associated taxiways, relocation of airport
perimeter road and security fences, removal and installation of runway and taxiway edge and centerline lights, installation of storm drain and waterlines, pavement marking, pavement grooving, infield grading, seeding and jet blast.

Portland International Airport - North Runway Extension

Port of Portland
Portland, Oregon
$25 million – Competitive Bid

U.S. Highway 395 – McKay Creek to Silvies Slough Bridge Replacement

This project replaced seven deteriorated bridges and repaired one bridge along a 250 mile route from Pendleton to Burns, Oregon. All of the structures were over the John Day River and its tributaries with in-water work windows varying from four weeks to six weeks. Concrete box beams, Bulb-T’s, Bulb-I’s and steel girders were used. The steel girder structure was a single span 220-foot bridge, the second longest single steel span in the state. Structures located within the “wild and scenic corridor” required aesthetic features.

U.S. Highway 395 – McKay Creek to Silvies Slough Bridge Replacement

ODOT
U.S. Highway 395, Oregon
$40 million – Design/Build

Upper Perry Arch Bridge Repair

This historic arch bridge designed by Conde B. McCullough spans the Grande Ronde River and the Union Pacific Rail Road. The single lane bridge consists of four approach spans which each average 50 feet in length, and one main arch that spans 130 feet. Repairs included a total of 1130 linear feet of epoxy crack injection, over 2000 square feet of regular cast-in-place concrete repair and 810 square feet of deep concrete repair. A total of 306 decorative dental blocks and 68 arched sidewalk brackets were demolished, then formed and cast in place.

Upper Perry Arch Bridge Repair

ODOT
Perry, Oregon
$5 million – Competitive Bid

Oregon City Arch Bridge Restoration

This restoration project of a concrete encased steel structure included removal of over 18,000 square feet of existing gunite by high-pressure water requiring multiple barges and equipment to be staged on the Willamette River. The existing gunite was replaced with a shotcrete cover. The project also included removal of existing steel and repairs were made with fish plates, welding and splicing. The bridge deck was removed at all existing joint locations, watertight seals were replaced, over 1500 linear feet of ornamental railing were removed and replaced, and the entire bridge deck was capped with a microsilica overlay.

Oregon City Arch Bridge Restoration

ODOT
Oregon City, Oregon
$12 million - Special Qualification/Competitive Bid