The Visual Analysis model of the bridge has been created, as shown in the first figure. This model was used to select beams in groupings. The beams selected were W6x15, W6x12, W8x24 beams of ASTM A992 Grade 50 steel based on the minimal deflections of the bridge in the closed and open positions as shown. This model is being imported into ANSYS where vibrational analysis can take place.

The prototype of the center mechanism is complete and features two motors, two gear boxes, two gears, one rack, six balance wheels and one switch to control the prototype in neutral, forward, and reverse.

This semester, one of the parts being worked on is the prototype. The rack and track have been 3D printed and all of the parts have either been ordered or have arrived. The assembling of the prototype will happen in the next few weeks. An abstract for a paper/poster presentation for the ASME International Undergraduate Research and Design Expo has been submitted for review. Upon approval the team will make a presentation at the conference outlining specifically the ANSYS validation of the truss model. The loading combinations determination and member selection are ongoing and will help the team to then move on and create their final ANSYS model with the final members. The Visual Analysis model is being created now using the loading combinations to determine the size of all members on the truss.