Devil’s Slide Bridge, California
The $33 million cast-in-place concrete segmental bridge contract consisted of a southbound box girder bridge with spans of 280'/445'/250' and a northbound bridge with spans of 229'/445'/224'. (see Figs. 10 and 11) The main span cantilevers of the southbound bridge were closed at the beginning of this year and the northbound bridge closure was completed in the spring. Disney Construction has since been concentrating on finish work including placing the unique see through concrete barriers, tubular steel bicycle rails, utilities, seismic instrumentation, and building a cantilevered deck linking the two bridges together near the portal to allow truck and maintenance equipment to make U-turns between the bridge and tunnel portal. Kiewit Pacific continues to excavate the 4000-foot twin bore tunnels from the opposite south portal under a separate contract. Kiewit was provided access to the north portals via the southbound bridge this summer even while the bridge contractor (Disney Construction) was still wrapping up his operations. The tunnels are expected to be completed in late 2010. Project information and progress photo’s can be seen at: http://www.dot.ca.gov/dist4/dslide/ Owner: California Department of Transportation (Caltrans) Designer: California Department of Transportation (Caltrans) Contractor: Disney Construction Inc. Contractor’s Segmental Construction Engineer: NRV (Nutt, Redfield & Valentine) Construction Management & Engineering Inspection: California Department of Transportation (Caltrans) Form Travelers for Cast-in-Place Segments: Travelers: Schwager Davis, Inc.; Forms: DOKA, USA, Ltd. Post-Tensioning Materials: Schwager Davis, Inc. Bearings and Expansion Joints: D.S. Brown (brgs), Stinger Welding Inc (exp jts) Prepackaged Grout: Sika Grout 300PT |
