Ironton Russell Bridge Project

Transcription

1 Construction Update March 1, 2014 Rendering by URS Responsible for Construction Inspection & Engineering Prepared by: Brian Davidson, P.E.

2 Ironton Russell Bridge Project Project Summary: March 1, 2014 Project Overview The Ironton Russell Bridge Project entails the construction of a cast in place concrete cable stayed bridge over the Ohio River with structural steel approaches connecting the towns of Ironton, Ohio and Russell, Kentucky. The bridge will provide two 12-ft driving lanes and two 4 ft shoulders; a driving lane and shoulder in each direction. Span lengths for the approaches vary widely as they cross numerous (6) rail lines, the Ohio River levee and city streets. On the Kentucky side the spans are 140-ft and 235-ft; in Ohio the spans are 110-ft, 144-ft, 186-ft and 144-ft. The approach bridges are founded on small diameter drilled shafts (Kentucky) or steel pile (Ohio). The main span unit consists of three spans; two flanking spans at 370-ft and the center span of 900-ft. The main span unit is supported by two CIP, 316-ft tall, diamond shaped towers, founded on large diameter drilled shafts with rock sockets. When completed, the 900-ft main span will be the longest span the Ohio DOT has built. The contract value for construction of the new structure and removal of the existing is $81,266,742.05, with Brayman Construction Corporation the low bidder. Recent Construction Highlights - Main Span Tower 3 (KY) Segment 6: At Tower 3, Ironworker crews are installing and securing reinforcing steel for one leg of Tower 3 Segment 6. The concrete section at Segment 6 is hollow. The interior forms are set giving the ironworkers a template to set the steel. Once all the rebar is in place, exterior form work will be set around it. Page 1 of 9

3 Ironton Russell Bridge Project Project Summary: March 1, 2014 Tower 4 (Ohio) Footing: Crews at Tower 4 (left) install rebar for the footing. Protruding rebar from the six drilled shafts that support the footing can be seen (right). Once the rebar was set in place, the concrete for the footing was cast (below). No formwork for the footing was needed as the interior dimensions of the sunken concrete cell matched the exterior dimensions of the footing. Page 2 of 9

4 Ironton Russell Bridge Project Project Summary: March 1, 2014 Kentucky Back Span: Pre cast anchor blocks and floor beams continue to arrive on site. Once on site they are set at their corresponding location on the Kentucky back span false work. In the photo (left), crews work closely with surveyors to set the pre cast anchor blocks while maintaining the correct cable stay guide pipe alignment. Pier 5 (OH): The final placement of the Pier 5 integral cap was placed in February. The cap contains vertical post tensioning ducts that tie the cap to the footing, six cable stay guide pipes, and twenty seven other post tensioning ducts that will be stressed in the future. The Pier 5 cap serves as a transition point for the cast-in-place super structure. On one side the Ohio approach steel girders set on beam seats, on the other is the start of the Cable Stayed Ohio back span. Page 3 of 9

5 Ironton Russell Bridge Project Project Summary: March 1, 2014 Recent Construction Highlights Approaches Ohio Approach-Steel Plate Girders: Steel plate girders for the Ohio approach arrived on site during the month of January. The first girder was set in February for the span from the Ohio abutment crossing over Pier 8 (left). Since then the span between the Pier 5 integral cap and Pier 6 has been set. The remaining two spans over the three Norfolk Southern rail lines remain to be set (below). Page 4 of 9

6 Project Summary: March 1, 2014 Scheduled Actual Select Milestone Events (Schedule Update 17) Date Date Notice to Proceed 3Feb12 Open Bridge to Traffic 25Apr16 End Project 2Feb17 Ohio Approach Set Structural Steel Ohio Approach Complete Deck Concrete Ohio Approach 26Mar14 23May14 Main Span Cast KY Tower Footing 10May13 10May13 Cast OH Tower Footing 21Jan14 21Feb14 Cast First KY Tower Section 27June13 14June13 Cast Last KY Tower Section 31Jul14 Cast First OH Tower Section 17Feb14 Cast Last OH Tower Section 17Mar15 Complete KY Back span 31Mar14 Complete OH Back span 07Oct14 Set form traveler KY Tower 08Oct14 Set form traveler OH Tower 16Jun15 Main span Closure Pour 28Dec15 Kentucky Approach Set Structural Steel Kentucky Approach 13Sept13 6Sept13 Complete Deck Concrete KY Approach 10Dec13 20Nov13 % Complete ($) Paid $35.8M/Total $82.1M 43.6% % Complete (Time) Day 725 of % Bridge and Roadway Summary At Tower 3 (KY), Segment 5 and the strut were cast on January 14, Work to form Segment 6 is ongoing. At Tower 4(OH), the footing was cast on February 21, Work will begin to form Segment 1 in March. The last placement at the Pier 5 (OH) integral cap was completed on February 18, Brayman s pre-cast plant continues offsite pre-casting of Ohio back span and main span anchor blocks. All Ohio approach substructure elements are complete. Steel girder erection for the Ohio approach began in February. 16 0f the 35 girder sections are in place. Sub contractor Boone-Coleman continues work on the approach embankment. Embankment is 85% complete, and all MSE wall panels have been installed. Page 5 of 9

7 Project Summary: March 1, 2014 Tower 3 (KY) Progress thru 3/1/14 Page 6 of 9

8 Project Summary: March 1, 2014 Tower 4 (OH) Progress thru 3/1/14 Page 7 of 9

9 Project Summary: March 1, 2014 Substructure Progress Chart thru 3/1/14 Kentucky Approach Ohio Approach Rear (KY) Abutment % complete Pier 6 % complete Drilled shafts 12 of Pile Installed 24 of Footing 7 of Footing 100 Backwall 2 of Stem 100 Wing walls 6 of Cap 100 Pier 1 Pier 7 Drilled shafts 3 of Pile Installed 24 of Footing 100 Footing 100 Stem 100 Stem 100 Cap 100 Cap 100 Main Span Pier 2 Pier 8 Drilled shafts 6 of Pile Installed 27 of Footing 100 Footing 100 Pier Segment 3 of Stem 100 Diaphragm Segment 4 of Cap 100 Pier 3 (Ky Tower) Forward (OH) Abutment Drilled shafts 6 of Pile Installed 22 of Footing 100 Footing 100 Tower Segments 5 of Backwall 2 of Wingwalls 2 of Pier 4 (OH Tower) Drilled shafts 6 of Footing 100 Tower Segments 0 of 18 0 Pier 5 Drilled shafts 4 of Footing 100 Pier Segments 2 of Diaphragm Segment 3 of Page 8 of 9

10 Project Summary: March 1, 2014 Superstructure Progress Chart thru 3/1/14 Precast Floorbeams # cast % cast 52 pieces total 52 of Precast Anchorblocks # cast % cast 108 pieces total 44 of Main Span Unit % complete Kentucky Back span Segments 0 of 12 0 Ohio Back span Segments 0 of 12 0 Kentucky Cantilever Segments 0 of 15 0 Ohio Cantilever Segments 0 of 15 0 Kentucky Approach % complete Girders Fabricated 24 of Girders Erected 24 of Deck Castings 3 of Ohio Approach % complete Girders Fabricated 35 of Girders Erected 16 of Deck Castings 0 of 4 0 Page 9 of 9