The Purpose Of Accelerated Bridge Construction
The purpose of accelerated bridge construction is to ensure the project planning, procurement, and logistics approach are modified to ensure tasks with long lead times, traditionally completed onsite, are of highest priority and completed using creative solutions. Multiple scenarios require the need for accelerated bridge construction technologies; where a bridge is being constructed or reconstructed over an existing roadway in use, where a bridge is being reconstructed or replaced for an existing roadway currently in use. Accelerated bridge construction technologies aid in the construction of the required infrastructure while minimizing or limiting the distribution of traffic. Where the impact upon traffic is a concern, relocation of roadway
traffic is a possible solution as well as the construction of a temporary bridge bypass. Accelerated bridge construction may also include the construction of the new bridge adjacent the old existing bridge to eliminate traffic interruptions. The old bridge will be removed subsequent to the opening of the new bridge. Where bridge overpasses are to be constructed or reconstructed over an existing live transit way, precast, modular units can be utilized, transported to site and installed over several hours of the night, therefore minimizing traffic disruption and eliminating the need for cast in place units or other related site works. (U.S Department of Transportation, 2011)
Relocation of Traffic
As a vast portion of bridge projects include the reconstruction of existing infrastructure designers and constructors must have careful attention to the societal affects and relocation of traffic. Relocation of existing traffic via detour routes is often required. Traffic congestion and increases as well safety may become an issue on temporary detour routes, accelerated bridge construction acts to reduce the time required using temporary detour routes for the purpose of traffic relocation. (U.S Department of Transportation, 2011)
Construction of Temporary Bridge Bypass
Where of bridge projects include the construction on or over existing infrastructure designers and constructors may consider the use of a temporary bridge bypass. Relocation of existing traffic via the bridge is required. The construction of a temporary bridge, to be used for the duration of the project requires additional fiscal investment. The cost of the temporary bridge, labour, setup, and decommissioning must be considered. This can cause a large increase in the project budget. Accelerated bridge construction techniques investigated in this report can be utilized to eliminate the need for the construction of a temporary bridge bypass. (U.S Department of Transportation, 2011)
traffic is a possible solution as well as the construction of a temporary bridge bypass. Accelerated bridge construction may also include the construction of the new bridge adjacent the old existing bridge to eliminate traffic interruptions. The old bridge will be removed subsequent to the opening of the new bridge. Where bridge overpasses are to be constructed or reconstructed over an existing live transit way, precast, modular units can be utilized, transported to site and installed over several hours of the night, therefore minimizing traffic disruption and eliminating the need for cast in place units or other related site works. (U.S Department of Transportation, 2011)
Relocation of Traffic
As a vast portion of bridge projects include the reconstruction of existing infrastructure designers and constructors must have careful attention to the societal affects and relocation of traffic. Relocation of existing traffic via detour routes is often required. Traffic congestion and increases as well safety may become an issue on temporary detour routes, accelerated bridge construction acts to reduce the time required using temporary detour routes for the purpose of traffic relocation. (U.S Department of Transportation, 2011)
Construction of Temporary Bridge Bypass
Where of bridge projects include the construction on or over existing infrastructure designers and constructors may consider the use of a temporary bridge bypass. Relocation of existing traffic via the bridge is required. The construction of a temporary bridge, to be used for the duration of the project requires additional fiscal investment. The cost of the temporary bridge, labour, setup, and decommissioning must be considered. This can cause a large increase in the project budget. Accelerated bridge construction techniques investigated in this report can be utilized to eliminate the need for the construction of a temporary bridge bypass. (U.S Department of Transportation, 2011)