Federal Highway Administration – Columbia River Viaduct and Bridge
Cascade Locks, OR
Stellar J completed a two-year transportation project in the Columbia River Gorge. The project included construction of three structures: 1) the Summit Creek Viaduct – a 6 span, 500 -foot long pre-stressed concrete box beam bridge with cast-in-place concrete deck; 2) the Gordon Creek Bridge – a single span, 80-foot long pre-stressed concrete slab bridge with asphalt overlay; and 3) the Lindsey Cut Bridge – a single span, 49-foot long pre-stressed concrete slab bridge with cast-in-place concrete deck.
To connect these structures required building mechanically stabilized welded wire walls, bin walls and tie-back walls with rock fall protection fencing and rock bolting prior to grading and paving the connecting roads. The project also included restroom facilities, a kiosk, stone masonry, and exposed aggregate sidewalks with decorative steel and cable railings.
This work was performed next to Interstate Highway 84 requiring traffic control and co-ordination with ODOT and other agencies that featured controlled blasting of rock formations within 90’ of the highway.