DEMOLITION, REMEDIATION AND ABATEMENT Archives

RIDOT WOONASQUATUCKET RIVER BRIDGE

The Rhode Island Department of Transportation Woonasquatucket River Bridge Design Build Project, located in Providence, involved the full superstructure replacement of the single span Bridge No. 604 on US Route 6. Manafort Brothers, Inc. was selected as the Design Build Prime Contractor to design and construct the bridge replacement on an aggressive schedule.

Demolition work included the removal of the existing bridge superstructure over the Woonasquatucket River using tandem crane picks during an overnight closure. The bridge construction scope of work included substructure concrete rehabilitation, new steel plate girders, a reinforced concrete bridge deck, cast-in-place concrete end posts, approach slabs, highway paving, line striping, landscaping, and maintenance and protection of traffic. As traffic on US Route 6 was required to be maintained with two travel lanes in each direction, all construction was carried out over two stages to complete the work.

Manafort served as the Design Build Prime Contractor for the project and self-performed a majority of the work including demolition, excavation, concrete substructure rehabilitation, superstructure concrete, drainage, and roadway construction. Manafort’s extensive design build experience aided in this project being delivered safely, successfully, ahead of schedule. and on-budget.

BOSTON FREIGHTLINER & EVERETT RIVERWALK

This project involved the construction of a new Boston Freightliner heavy duty equipment sales and service building located just north of Boston in Everett, MA. The new Boston Freightliner building replaced its former location on Lower Broadway to make way for the Wynn Encore Boston Harbor Hotel. In addition to the new Boston Freightliner building, the Everett Riverwalk was added to the project as part of a future municipal park development. The Everett Riverwalk site originally was home to a GE Factory that manufactured airplane engines during the 1940’s. This project transformed the site into a new park with a bike path that follows the shores of the Malden River and connects to the Northern Strand Bikeway. Manafort Brothers, Inc. was selected to perform the civil and utility as well as substantial soil remediation work for this multi-faceted project.

For the new Boston Freightliner building, Manafort’s civil scope of work included site clearing, structural excavation for building foundations, rough grading, excavation for underslab utilities, roadway grading, parking lot grading, soil management. Site finishes included curbing, asphalt paving, pavement markings, bollards, and signage. Manafort’s utility scope of work included domestic water and fire services, water main replacement, sanitary sewer connection, storm drainage improvements, stormwater detention basins, gas service connection, electrical and telecommunication services.

The Everett Riverwalk scope of work included capping of the contaminated soils from the old GE Factory, extension of the existing water main, grading, asphalt paving, site appurtenances and earthwork for a new shade structure.

Manafort worked closely with the developer team and the Massachusetts Department of Environmental Protection to complete the project safely, successfully, on-time, and on-budget.

HIGH STREET DAM REMOVAL AND BRIDGE REPLACEMENT

Located in Bridgewater, MA, the High Street Dam was rated as a Significant Hazard by the MA Office of Dam Safety for impeding migratory fish passage, interrupting natural river processes, and contributing to local flooding. Manafort Transit was selected to remove the existing 12 ft high and 80 ft wide dam across the Town River and replace the 170 year old High Street Bridge to withstand 500-year floods.

Manafort’s demolition scope included the design and installation of a temporary cofferdam, consisting of 3,000 lb sandbags, to temporarily divert and relocate Town River to facilitate the demolition of the existing dam and appurtenances under fully dewatered conditions. Manafort was required to selectively demolish and salvage portions of the historic dam for re-use on site.

Manafort’s bridge replacement scope included the construction of two new cast in place concrete bridge abutments and wingwalls supported by 3 ft diameter drilled shaft foundations. The new bridge superstructure included structural steel framing and a cast in place concrete deck. In addition, Manafort relocated gas, sanitary sewer, storm drainage, and water main utilities and constructed all site finishes on the project including reprofiling of the river channel, extensive river bank restoration, concrete sidewalks, and bituminous pavement.

The Manafort team’s extensive demolition and construction experience, in addition to close coordination with all project stakeholders and agencies, aided in the environmentally sound, safe, successful , on-time, and on-budget completion of this project.

CTDOT NOROTON HEIGHTS RAILROAD STATION PLATFORM REPLACEMENT

CTDOT Project 0301-0170 – Noroton Heights Railroad Station Platform Replacement Project located at the Noroton Heights Railroad Station along the Metro-North commuter line on the Northeast Corridor in Darien, CT, involved the replacement of the existing railroad station platforms along Track 3 (New York Bound) and Track 4 (New Haven Bound). Manafort Brothers, Inc. was selected to upgrade the railroad station by raising the existing platforms, as well as the associated access stairways, ramps, and railroad station appurtenances in disrepair, to be compliant with the Americans with Disabilities Act.

Manafort’s demolition scope of work included removal and disposal of the existing precast concrete double tee flange railroad station platforms, stairs, ramps, and train passenger shelters along the train tracks. In order for the Noroton Heights Railroad Station to remain operational during construction, Manafort extensively coordinated with the Metro-North Railroad in order to keep the railroad station operational during construction. The work was required to be completed in several phases and during nightly track outages due to the proximity to the train tracks and overhead electrified catenary systems.

Manafort’s train platform scope of work included foundation upgrades, structural steel framing, cast in place concrete train platforms with embedded tactile warning surface, stairs, ramps, rub rail installation, ornamental railing, signage, and new passenger shelters. Manafort value engineered the platform design to be a cast in place structure in lieu of large prefabricated precast concrete elements to allow construction with smaller and less intrusive equipment minimizing impacts on railroad operations. In addition, potential delays due to unforeseen conditions were successfully mitigated by Manafort’s proven ability to increase labor and equipment resources on the project whenever necessary to be able to combine project phases and accelerate the project schedule.

Manafort served as the Prime Contractor on this project and self-performed major aspects of the project including train platform and railroad station appurtenance demolition, structural excavation, backfill, cast in place concrete train platform decks, foundation upgrades, stairs, handicap ramps, and sidewalks. All work was completed safely, successfully, on-time, and on-budget through extensive coordination with the Metro-North Railroad and the CTDOT.