Lunda successfully completed the replacement of the Lowry Ave Bridge in 2012. Construction included a signature basket handle structural steel arch with a 450’ main span and a concrete post tensioned tie girder and deck. A majority of the project was located directly in the Mississippi River. The basket handle arch and unique substructure geometry required that Lunda spend considerable time engineering formwork, false work, and erection sequences for both the structural steel arch and post tensioned concrete elements. During this preplanning phase of the project, Lunda considered numerous options regarding intelligent design of temporary structures.
Collaboration with field construction personnel, the owner, and governing agencies such as the USCG, USACE, and DNR, as well as performing constructability reviews allowed the development of the temporary structures to maintain the interests of all parties while meeting the project requirements. This section of the river also has significant recreational and commercial navigation traffic. Early planning and coordination with local agencies and river fleet transporters was instrumental in eliminating the risk associated with all river stakeholders during critical activities such as the float in and erection of the 1 million pound precast concrete tie girders and erection of the steel arch over the navigation channel.