Kedashka Auba Yiannis Bagtzoglou Melissa Hernandez Peter Purcell
Ramp Bridge 07011 Project
Construction of Ramp Bridge 07011 accommodates the proposed full interchange at Interstate-95 Exit 33. The current partial diamond interchange 33 features an I-95 northbound exit and I-95 southbound entrance in Stratford, CT. The objective of this project is the design and load rating of Bridge 07011, which carries the new I-95 proposed southbound off-ramp for interchange 33.
The ramp bridge span is 100 feet long and features one 12 foot wide lane, a 4 foot wide shoulder, and a 10 foot wide shoulder. The bridge is skewed 29.5° to the roadway below, Barnum Avenue Cutoff. Based on 2018 Average Daily Traffic (ADT) records, an approximate 4,300 vehicles are predicted to use this off-ramp.
Design of the bridge was completed in accordance with the AASHTO LRFD Bridge Design Specifications and the current CT DOT Bridge Design Manual. AASHTOWare Bridge Design was used in the design of the bridge superstructure. The bridge superstructure is comprised of steel beams placed directly over a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) substructure.
The completed design was inputted into AASHTOWare Bridge Rating software and rated under AASHTO HL-93 vehicular live load. The load rating software determines the bridge live load capacity and whether the design passes or fails the CT DOT load rating factor of 1.0.