Ironton Russell Bridge Project

Transcription

1 Construction Update October 1, 2015 Rendering by URS Responsible for Construction Inspection & Engineering Prepared by: Brian Davidson, P.E.

2 Ironton Russell Bridge Project Project Summary: October 1, 2015 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 original 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 4 (OH): A panoramic view of Tower 4 in Ohio and the existing bridge as river traffic passes through the construction site. As Tower 4 nears completion its right leg is cast through segment 14 of 18 and the left through segment 12. Page 1 of 8

3 Ironton Russell Bridge Project Project Summary: October 1, 2015 Main Span CantileverForm Traveler: Concrete is placed for main span segment M3 (left). The concrete is finished using a vibrating truss screed powered by compressed air. During the month of September two segments (M3 and M4) were cast on the main span cantilever. Page 2 of 8

4 Ironton Russell Bridge Project Project Summary: October 1, 2015 Main Span Cantilever-Cable Stays: Back span cable stays B9 and B11 were installed prior to casting main span segment M3. Installing cable stays six segments ahead on the back span appears out-of-sequence from a distance, but this is part of the contractor s construction engineering plan (above). Page 3 of 8

5 Scheduled Actual Select Milestone Events (Schedule Update 36) Date Date Notice to Proceed 3Feb12 Open Bridge to Traffic 25Apr17 End Project 30Jan18 Ohio Approach Set Structural Steel Ohio Approach 18Apr14 18Mar14 Complete Deck Concrete Ohio Approach 15Oct14 22Oct14** 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 03Jun15 04Jun15 Cast First OH Tower Section 05Mar14 27Mar14** Cast Last OH Tower Section 23Dec15 Complete KY Back span 06Aug14 15Aug14 Complete OH Back span 21Jul15 16Jul15 Set form traveler KY Tower 13Aug15 17Aug15 Set form traveler OH Tower 25Mar16 Main span Closure Pour 5Oct16 Kentucky Approach Set Structural Steel Kentucky Approach 13Sept13 6Sept13 Complete Deck Concrete KY Approach 10Dec13 20Nov13 % Complete ($) Paid $60.5M/Total $82.8M 73.1% % Complete (Time) Day 1305 of % **Non critical path activity. Bridge and Roadway Summary Tower 3 (KY), the Ohio back span, and the Kentucky back span are complete. At Tower 4 (OH), Segment 12 left (downstream) was cast on September 21, Segment 13 right (upstream) was cast on September 3, Segment 14 right (upstream) was cast on September 24, Segment 13 left (downstream) and Segment 15 right (upstream) are currently being formed. On the main span cantilever, Segment M3 was cast on September 18, 2015 and Segment M4 was cast on September 28, Crews are currently setting up for post tensioning and launching to Segment M5. Back span stays B4, B9 and B11 were installed in September. Page 4 of 8

6 Tower 3 (KY) Progress thru 10/1/15 Page 5 of 8

7 Tower 4 (OH) Progress thru 10/1/15 Page 6 of 8

8 Substructure Progress Chart thru 10/1/15 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 18 of Backwall 2 of Wingwalls 2 of Pier 4 (OH Tower) Drilled shafts 6 of Footing 100 Tower Segments 13 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 10/1/15 Precast Floor beams # cast % cast 52 pieces total 52 of Precast Anchor blocks # cast % cast 108 pieces total 107 of Main Span Unit % complete Kentucky Back span Segments 12 of Ohio Back span Segments 12 of Kentucky Cantilever Segments 4 of Ohio Cantilever Segments 0 of 14 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 4 of Page 8 of 8