Gateway to/from Boston's New Convention Center District and South Boston Bayside Engineering, Inc. was selected by the City of Boston to develop a permanent design for this critical bridge replacement project. The bridge abuts the southeast portion of the new City of Boston Convention Center Development District and serves as the primary access gateway to and from South Boston. The new bridge structure consists of an eighteen span continuous pre-stress deck structure supported by concrete pier bents on driven and drilled concrete caissons. The span length is 1,100 feet with over 121 caissons required. Bayside also incorporated a fishing pier into the design.

Design difficulties included fixing an existing substandard and hazardous rapid alignment change at the movable draw span portion of the existing bridge. The project is located in a heavily developed section of South Boston; therefore, the existing roadway approaches alignments as well as the abutments had to be retained. In addition, the United States Coast Guard regulated waterway vertical clearance through the old draw span portion of the structure had to be increased for the replacement fixed span structure.

Bayside Engineering's innovative design included a super elevated curve which smoothes out the roadway alignment over the Reserved Channel, the new bridge structure maintains speed of the Summer Street approaches and the increased vertical clearance serves the needs of boaters and fishermen in the area
 

Refer to Projects for additional designs completed by Bayside Engineering, Inc.

 


600 Unicorn Park Drive, 3rd Floor
Woburn MA  01801
(781) 932-3201 l Fax (781) 932-3413

email: bayside@baysideengineering.com