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Pearl Street Bridge Replacement

 

Design and construction phase services to replace a 159-ft bridge carrying Pearl Street over the Gihon River. Both the railings and deck were heavily deteriorated. The existing concrete bridge railing, considered a historic resource by the State Historic Preservation Office (SHPO), had deteriorated to the point where replacement was the only option. The bridge was the only major access to the north area of the Village including Johnson State College, the municipal offices, and the elementary school. A detour and a temporary bridge were provided during construction.

Project components included superstructure replacement using 150-ft continuous horizontally curved steel beams with a composite concrete deck, a SHPO-approved Texas Classic bridge rail, and new sidewalks on both sides of the bridge. Approach work included roadway realignment, sidewalk and curb, new sub base and pavement, and driveway improvements. Professional services include:

Survey and deed research
Permitting/NEPA documentation
Investigation of viable superstructure and alignment alternatives
Right-of-way plans
Utility relocations
Traffic maintenance via a temporary bridge during construction

Panera Bread

 

DuBois & King provided comprehensive site development services for construction of a 3,800-sf restaurant in an existing shopping center. Services included site design and landscape architecture for the facility with a focus on multimodal access. The restaurant is located in an existing shopping center. Professional services were provided for the following:

Pedestrian walkways
Parking island reconfiguration
Floodproofing
Drive-through access
ADA access
Bicycle storage
Signage
Lighting

Otter View Park

 

Otter View Park is a nature park and trail on 17-acres of Middlebury Land Trust property located along the Otter Creek, providing pedestrian access through an upland meadow, cattail marsh, wetland, and floodplain forest. Provided alternatives analysis through final design of the trail, trailhead parking, overlook viewing areas, and an 800 ft long elevated boardwalk across the wetland floodplain. Professional services included survey, civil, sanitary, structural, and hydraulic engineering; permitting; construction phase services; and engineering and permitting services for the subdivision of three residential lots associated with the property. The elevated boardwalk was designed using a helical pier foundation system enabling construction from the deck side, eliminating wetland impacts. Recycled composite fiber material was used for decking, railing surface, and bench seats.

Oak Hill Stream Channel Restoration

 

DuBois & King conducted hydrologic modeling of the watershed above an incising stream channel that had been straightened and lined with rock during highway construction. Working for the Winooski Natural Resources Conservation District, D&K used LiDAR elevation data and ArcView GIS to delineate subwatersheds and define flow paths, and confirmed the information with a detailed watershed reconnaissance. The modeling showed that additional impervious surface in the watershed would have little impact on the total volume of water delivered to the stream. However, the roadways in the watershed altered natural flow paths and resulted in a significant increase in the volume of water delivered to the stream channel.

The results of the hydrologic analysis were used in the design of a new stable stream channel. The channel was sized to accommodate the predicted bankfull flow and access to the adjacent floodplain was maintained or restored where existing infrastructure allowed. The design blended hydraulic engineering principles and natural channel design principles to achieve a channel with dimensions, slope, sinuosity, and material that are appropriate for the setting and stable over time. Services included preparation of bid and contract documents, permitting assistance, and construction inspection.

Norwood Memorial Airport Planning and Design

 

DuBois & King serves as the Airport Engineer for Norwood Memorial Airport. Over successive, consecutive terms, D&K engineers have assisted the Airport with professional services related to funding assistance, environmental considerations, and design for multiple projects including:

Reconstruction of Taxilane ‘B’. Design and construction services for the reconstruction of a 2,600 ft by 35 ft taxilane project. Services included design and as-built surveys, environmental permitting, taxilane design, and construction inspection and administration. Design elements include pavement design with reclaimed pavement, grading and drainage improvements, edge lighting, signage, pavement markings, and the evaluation of aircraft tie-down separation from taxilane to maximize the number of tie-down spaces.

Reconstruction of Runway 10-28 (approx. 450 ft by 75 ft) and Remark Runway 28 with a Displaced Threshold. Project management, design of bituminous concrete pavement, edge lighting, pavement marking, drainage, site grading, and construction management of a runway reconstruction project. Project included survey and geotechnical investigation, pavement geometry, pavement design, stormwater management, site grading, utility modifications, pavement markings, construction phasing, erosion control measures, quantity take offs, and construction estimates.

Other projects include land acquisition in the runway approach and runway protection zone (RPZ), and purchase of snow removal equipment.

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