Scope of Work
Cianbro is replacing two fixed, simple span, thru-girder rail bridges. The railway consists of two ballasted tracks on the same alignment located on a causeway, with low clearance over harbor channels approximately 800 feet apart. 

Project Details

• Constructing 8 – 30 ft x 30 ft pile supported work platforms for micro pile drilling operations
• Drilling and grouting 48 – 65 ft long, 12 inch diameter micro piles with a 14 ft rock socket, in close proximity to the rail track and Stonington Harbor
• Installing 8, temporary jump span bridges to allow forming and placing of four concrete abutments behind the existing abutments under live train traffic
• Constructing 2, roll-in falsework systems consisting of double W36 x 302 track beams on 20 inch diameter pipe pile bents
• Erecting 1,200 tons of structural steel for the new bridge superstructures on roll-in falsework adjacent to the existing bridges
• Demolishing two existing bridges consisting of track, ballast, concrete ties, precast concrete deck panels and lead paint coated structural steel