As part of a JV team, D&K provided engineering services for the replacement of two farm bridges. The project involved Phase I, a preliminary design and cost estimate phase; Phase II, a final design and design documentation phase; and Phase III, construction phase services. The Boudreau bridge design is for a 35-ft by 15-ft-wide H-20…
The Great Streets BTV planning document, coauthored by D&K, represented a holistic effort to make Burlington’s downtown core more appealing for users of all modes of transportation and to enhance the area’s ability to engage its natural and cultural assets. D&K’s approach to the project incorporated the first segments of roadway designed and constructed to the Great Streets standards….
Used for aircraft access from the tarmac, the existing seven hangar doors were original to the facility (circa 2003), no longer operated efficiently, had tears in the door fabric assemblies, and were troublesome to repair, as the manufacturer was located in Finland. The doors were 33 ft high and ranged in width from 60 ft…
Near Mt. Mansfield, Vermont’s highest peak, a 1.5-mile section of VT 108 traverses a mountain pass at 2,165 ft and provides trailhead access for the Long Trail, local crags, and other day-use areas. Increased use of the area led to on-street and off-street informal parking that, in turn, led to environmental, drainage, and safety issues….
A large storm event overwhelmed the Plunkton Road Bridge. The bridge was damaged but stable enough to keep open until a new structure could be designed and constructed. D&K assessed the damage, surveyed the site, and provided the town with an evaluation of several options to replace the bridge. The project team also assisted with…
MaineDOT sought to enlarge and improve a stream crossing in conjunction with a highway widening and resurfacing project. Under a MaineDOT General Consultant Agreement, D&K designed a new buried, precast concrete box structure with bed retention sills to aid aquatic organism passage and comply with Maine Department of Environmental Protection crossing rules. The interior dimensions…
The Town of Bow needed to replace a 20-ft, rigid-frame culvert with inadequate scour protection, foundations, and geometry. The roadway serves heavy truck traffic and intersects with NH 3A, a state highway frequently used to bypass a tolled section of I-93 near the Interstate I-89 intersection with I-93. D&K designed a replacement structure to address…
The Vermont Agency of Transportation had to replace a buried water conveyance structure that was (hydraulically) undersized and causing the rail and roadway embankments to act as a dam during moderate and large storm events. Located 70 feet below grade in some places, the existing system of metal pipes and concrete structures was in poor…
Swollen by a large storm event, the Middlebury River and local drainages damaged VT 125 in Ripton. The highway was temporarily repaired in the weeks immediately following the storm, but long-term repairs were sorely needed. The project environment consisted of steep roadway embankments immediately adjacent to the Middlebury River. High water velocities and a sinuous…