At Avenue 15, construction is underway on both sides of the tracks as workers complete the central pier and start work on the eastern abutment. Workers have poured the bent cap, which ties the two columns together, and are removing the temporary falsework that supported the concrete forms. The 35-foot-tall west abutment was poured earlier this month and the forms have been stripped and moved to the east side where that abutment is now taking shape. After the eastern abutment is poured, girders will be set for the two-span structure which will take traffic over the future high-speed train and the existing BNSF freight rail alignment.