Ironton Russell Bridge Project

Transcription

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

2 Ironton Russell Bridge Project Project Summary: September 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 Kentucky Back Span: All 12 segments of the Kentucky Back Span and the Pier Table are now cast and cured. This gives Brayman access to the Kentucky Tower from the approach abutment near US 23. Page 1 of 8

3 Ironton Russell Bridge Project Project Summary: September 1, 2014 Kentucky Back Span: With all the Kentucky back span segments complete, the contractor can execute their plan of placing a crane on the back span to aid the construction of the upper Tower 3 segments. A 888 Manitowoc crane was assembled on the deck of the back span and will be operated within the limits defined in the contractors construction manual. Page 2 of 8

4 Ironton Russell Bridge Project Project Summary: September 1, 2014 Recent Construction Highlights Ohio Approach Ohio Approach Deck: Brayman has completed installing overhang brackets, and all barrier wall and haunch forms are now set for the Ohio approach deck sections. Reinforcing steel installation has started, due to the deck pour sequencing all reinforcing steel will be in place prior to the first of four deck placements. This first casting will take place in the coming weeks. With the following three placements scheduled with little or no lag time between them (above). Page 3 of 8

5 Scheduled Actual Select Milestone Events (Schedule Update 23) Date Date Notice to Proceed 3Feb12 Open Bridge to Traffic 6Jul16 End Project 10Apr17 Ohio Approach Set Structural Steel Ohio Approach 18Apr14 18Mar14 Complete Deck Concrete Ohio Approach 13Oct14 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 07Nov14 Cast First OH Tower Section 05Mar14 27Mar14** Cast Last OH Tower Section 15Jun15 Complete KY Back span 06Aug14 Complete OH Back span 08Jan15 Set form traveler KY Tower 15Jan15 Set form traveler OH Tower 18Sept15 Main span Closure Pour 31Mar16 Kentucky Approach Set Structural Steel Kentucky Approach 13Sept13 6Sept13 Complete Deck Concrete KY Approach 10Dec13 20Nov13 % Complete ($) Paid $45.7M/Total $82.8M 55.2% % Complete (Time) Day 910 of % **Non critical path activity. Bridge and Roadway Summary All of the 12 Kentucky Back Span Segments have been cast on the false work. The final back span deck placement was cast on August 19, All of the 24 floor beam post-tensioning tendons have been stressed and grouted. At Tower 3 (KY), Segment 11 left (downstream) was cast on June 10, Segment 11 right was cast on June 17, At Tower 4(OH), Segment 2 was cast on June 9, Work continued forming Segment 3. All Ohio approach substructure elements are complete. Steel girder erection for the Ohio approach was completed in March and sub-contractor Boone-Coleman has completed the approach embankment. Sub-contractor Oglesby has partially completed work placing concrete pavement on the approach and surface streets. Brayman continues forming the Ohio approach deck sections. Brayman s reinforcing steel subcontractor, J&B Steel, has begun installing rebar for the deck sections. Page 4 of 8

6 Tower 3 (KY) Progress thru 9/1/14 Page 5 of 8

7 Tower 4 (OH) Progress thru 9/1/14 Page 6 of 8

8 Substructure Progress Chart thru 9/1/14 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 11 of Backwall 2 of Wingwalls 2 of Pier 4 (OH Tower) Drilled shafts 6 of Footing 100 Tower Segments 2 of Pier 5 Drilled shafts 4 of Footing 100 Pier Segments 2 of Diaphragm Segment 3 of Page 7 of 8

9 Superstructure Progress Chart thru 9/1/14 Precast Floorbeams # cast % cast 52 pieces total 52 of Precast Anchorblocks # cast % cast 108 pieces total 48 of Main Span Unit % complete Kentucky Back span Segments 12 of 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 35 of Deck Castings 0 of 4 0 Page 8 of 8