Lacey V. Murrow Bridge
Location: Seattle, WA Contract Value:
For all the existing fixed spans on this major widening and refurbishing project, Somerset produced special procedures for implementation. Our innovative method for widening the two 65-metre arches was to temporarily brace each arch line and using eight horizontally mounted hydraulic screw actuators, to slide the open spans on UHMW/PE skid support beams.
We also provided designs and procedures to simultaneously jack a three span continuous, 137-metre-long truss approach bridge to allow the main bearings to be changed. For the new construction, we designed special built temporary supports for a three span, 525-metre haunched C.I.P. box structure.
