Construct case-in-place segment gradually on every 3~5m from the both sides of the pier (capital) with post-tensioning method for upper bridge structure. Form-traveler is used to move the cast mold and for concrete depositing.
After manufacture and transport steel cast from lighters wharf, construct well foundation in parallel with pier construction
Capital construction in parallel with pier construction and construction for each upper area sag.
Repeat the 2 phase construction to complete slab connection. Built ballast and rail
Construction photos (Bukhangang bridge on zone 3 in the Joongang line )