CLIENT
Massachusetts Department of Transportation (MassDOT)
LOCATION
Boston and Cambridge, MA
MARKET
Highways & Bridges
SERVICES
Design: Architecture, Civil Engineering, Electrical Engineering, Structural Engineering, Historic Preservation/Restoration, Signals/Communication
Longfellow Bridge Rehabilitation Design-Build
Considered one of the most historically significant bridges in Massachusetts, the Longfellow Bridge connecting Boston and Cambridge has been restored to its original architectural grandeur while adapting to meet 21st century transportation demands. Known for its distinctive granite piers and towers that give the structure its local moniker as the “Salt and Pepper Bridge,” the Longfellow carries both Route 3 and the Massachusetts Bay Transportation Authority’s Red Line subway over the Charles River. After more than a century of service, the bridge had widespread deterioration of its arches, columns, ornate masonry and metal casting features and was in need of repairs to improve its structural integrity.
STV served as the lead designer as part of a design-build team for the $306.5 million rehabilitation. It is now fully AASHTO compliant with three vehicle lanes, two bicycle lanes and wider ADA-compliant sidewalks. The Red Line’s center tracks were improved with new traction power, communications and signals modifications. The firm also provided construction support services to maintain the historic integrity of the span with careful consideration for the reconstruction of the four 58-foot masonry towers that flank the bridge’s center span.
Project Recognition
ABBA G. LICHTENSTEIN MEDAL
The 2020 International Bridge Conference Awards
BULFINCH AWARD
2020 Bulfinch Award - Historic Preservation
New England Chapter of the Institute of Classical Architecture & Art
PRESERVATION ACHIEVEMENT AWARD
2019 Preservation Achievement Award
Boston Preservation Alliance
NATIONAL PRESERVATION AWARD
2019 Richard H. Driehaus Foundation National Preservation Awards
National Trust for Historic Preservation
PRESERVATION AWARD
2019 Massachusetts Historical Commission Preservation Awards
Massachusetts Historical Commission
PUBLIC WORKS PROJECT OF THE YEAR
2019 Public Works Award - Historical Restoration/Preservation, More Than $75 Million
American Public Works Association
NATIONAL RECOGNITION AWARD
2019 Engineering Excellence Award - Structural Systems
American Council of Engineering Companies
SILVER AWARD
2019 Engineering Excellence Award
American Council of Engineering Companies of Massachusetts
AWARD OF MERIT
2019 Best Projects Awards - Highway/Bridge
ENR New England