FacebooklinkedininstagramFacebooklinkedininstagram

Robbins Nest Covered Bridge

 

The Robbins Nest Covered Bridge is a 57-ft-long, single-span structure that spans over the Jail Branch of the Winooski River. The bridge, constructed in 1962 by Robert Robbins, is 12 ft, 10 inches wide and utilizes Queen Post truss framing. During routine bridge repairs, the contractor uncovered and exposed the lower portions of the bridge trusses, which revealed significant deterioration of a truss chord member. DuBois & King bridge engineers worked with the contractor to provide fast-track field observations, assessments, and in-depth truss analysis, in order to provide engineering and design for truss chord repairs. Repairs included:

Removal of deteriorated section of lower truss chord
Reused truss members that were in good condition
Design of tension splice for chord member interface
Design for total truss capacity of 3 tons (live load)

Principles of the Secretary of the Interior’s Standards of Rehabilitation and the Burlington Charter were applied to truss repair.

Rest Area Reconstruction

 

Design and plan preparation for permitting and construction of site improvements and expansion of the 6-acre, 5,000-sf Interstate 91 south rest area. Development of plans included preparation of base maps; preparation of environmental and topographic data; design of geometric layout of ramps; pedestrian, bus, van, and car traffic flows and parking; walkways; site grading to address drainage; handicap accessibility; building entries; design of new parking areas and utilities; Federal and State permitting; and construction cost estimating.

Coordinated closely with several agencies to ensure that the operational concerns of all users would be addressed. Since the expanded facility would be used for truck inspections, the site layout was designed to allow segregation of trucks from other rest area users. Enlarged entry ramps were also provided to allow safe queuing of vehicles to be inspected. Landscaping design emphasized preserving existing vegetation.

Randolph Area Community Development Corporation Salisbury Square Redevelopment Survey

 

Survey services for the redevelopment of an approximately 3.5 acre downtown brownfield site and a connected one acre site. A steep embankment separates the project, with a walkway connecting the developments. The mixed use development consists of new affordable rental apartments, historic rehabilitation, and new affordable for sale homes. Design incorporated LEED certification for residential facilities.

Scope of services included an ALTA/ACSM boundary and topographic survey on the abandoned commercial site; location of old utilities with complete topography; conducting GPS control; location of existing monuments as part of the boundary survey; and re-establishing the railroad right-of-way.

Randolph Area Community Development Corporation Salisbury Square Redevelopment

 

Project initiated by Randolph Area Community Development Corporation with assistance from the Hartland Group. Redevelopment of an approximately 3.5-acre downtown site off Salisbury Street and a one acre site off of School Street in Randolph, separated by a steep bank. The three components of the project consist of rental apartments, historic rehabilitation, and for sale homes. The Salisbury Square buildings are required to be five star energy rated and LEED rated, utilizing green construction modular units and complying with current State stormwater regulations for new, existing, and redeveloped impervious surface areas. Project services include:

Topographic survey and base map preparation
Site design
Permitting including Vermont Act 250
Utilities
Stormwater
Erosion prevention and sediment control
Roadway design
Landscape architecture
Lighting
Pedestrian paths/sidewalks
Bid and construction phase services

Randall Covered Bridge

 

Selected by the Town of Lyndon to provide professional engineering services to conduct investigations and develop plans and cost estimates for the restoration and repair of the Randall Covered Bridge. The bridge, constructed in 1865, is a 68-ft-long, single span structure that spans the East Branch of the Passumpsic River. The bridge is 14 ft, 8 inches wide overall and utilizes Queen Post trusses spaced 13 ft apart to support the deck and roof. Recommendations for repairs:

Replace loose, broken, rotted, or warped siding
Replace decayed deck with lighter, traditional plank deck
Application of insecticide for powder post beetles/carpenter ants
Replace metal roof
Replace worn running boards and broken roof rafters
Replace rotten truss members
Replace missing mortise/tenon knee brace connections
Reconstruct rotten truss joints
Repair deteriorated concrete abutments
Apply fire retardant on exposed timber
Replace worn/decayed siding

Principles of the Secretary of the Interior’s Standards for Rehabilitation and the Burlington Charter were applied to all phases of the work.

 Back  More
MENU