Hybrid arched overfilled structure

A method of forming a hybrid arched overfilled bridge structure comprising:

• A) defining a first pathway;
• B) defining a second pathway spaced above said first pathway;
• C) forming a plurality of pre-cast side elements using a casting table;
• D) adjusting the casting table during the formation of a side element;
• E) providing each side element with a connecting element;
• F) placing two footing strips adjacent to the first pathway, with one footing strip on each side of the first pathway;
• G) supporting one end of each of the pre-cast side elements on one of the footing strips;
• H) forming two rows of footing strips along the first pathway, and orienting each pre-cast side element to extend from the footing strip toward the second pathway and partially over the first pathway with the connecting element extending over the first pathway;
• I) placing a crown sector formwork on the footing strips;
• J) adjusting the crown sector formwork;
• K) supporting the pre-cast side elements against the formwork;
• L) pouring a concrete mix onto the crown sector formwork and onto the connecting elements;
• and
• M) casting in place a crown sector element on the formwork and between the two rows of pre-cast side elements to extend from one pre-cast side element in one row of the two rows of pre-cast side elements to a second pre-cast side element in a second row of the two rows of pre-cast side elements;
• and
• N) locking the crown sector element to the side elements so the cast-in-place crown sector combines with the pre-cast side elements to define a structure over the first pathway.

A method of forming a hybrid arched overfilled bridge structure comprising:

• A) defining a first pathway;
• B) defining a second pathway spaced above said first pathway;
• C) forming a plurality of arcuate pre-cast side elements using a casting table having an arcuate work surface;
• D) heating a pre-cast side element while it hardens after pouring;
• E) adjusting the casting table during the formation of a side element;
• F) providing each side element with a connecting element;
• G) placing two footing strips adjacent to the first pathway, with one footing strip on each side of the first pathway;
• H) supporting one end of each of the pre-cast side elements on one of the footing strips;
• I) forming two rows of footing strips along the first pathway and orienting each pre-cast side element to extend from the footing strip toward the second pathway and partially over the first pathway with the connecting element extending over the first pathway;
• J) placing a crown sector formwork on the footing strips;
• K) adjusting the crown sector formwork using mechanical elements;
• L) providing reinforcing elements adjacent to the crown sector formwork;
• M) sealing ends of the crown sector form;
• N) supporting the pre-cast side elements against the formwork;
• O) pouring a concrete mix onto the crown sector formwork and onto the connecting elements and onto the reinforcing elements;
• P) casting in place a crown sector element on the formwork and between the two rows of pre-cast side elements to extend from one pre-cast side element in one row of the two rows of pre-cast side elements to a second pre-cast side element in a second row of the two rows of pre-cast side elements;
• Q) heating the concrete mix on the crown sector form during curing;
• R) locking the crown sector element to the side elements so the cast-in-place crown sector combines with the pre-cast side elements to define a bridge over the first pathway;
• S) forming an end treatment at each end of the bridge;
• and
• T) backfilling around the bridge.

A method of forming a hybrid arched bridge structure over a first pathway, comprising:

• A) providing a plurality of pre-cast side elements;
• B) erecting the pre-cast side elements in two spaced apart rows along the first pathway, each pre-cast side element extending partially over the first pathway;
• and
• C) casting in place one or more crown sector elements between the two spaced apart rows of pre-cast side elements such that the one or more crown sector elements connect the two spaced apart rows of pre-cast side elements to define a bridge over the first pathway;
• D) wherein at least one or the one or more crown sector elements has a surface exposed to the first pathway.

A method of forming a hybrid arched overfilled bridge structure comprising:

• A) defining a first pathway;
• B) defining a second pathway spaced above said first pathway;
• C) providing a plurality of pre-cast side elements;
• D) erecting the pre-cast side elements in two rows along the first pathway to extend toward the second pathway and partially over the first pathway;
• E) casting in place a crown sector element between two pre-cast side elements to extend from one pre-cast side element of the two pre-cast side elements to the other side element of the two pre-cast side elements so the cast-in-place crown sector combines with the two pre-cast side elements to define a bridge over the first pathway;
• and
• F) providing a casting table for the production of side elements having an arcuate form surface and an adjustable end and a connection element on another end, moving the adjustable end, and pouring concrete mix onto the form surface of the casting table to form an arcuate pre-cast side element.