Construction Today - December 2009 - (Page 117)
Road to Innovation I THE INDIAN RIVER INLET BRIDGE IS THE DELAWARE DOT’S LARGEST PROJECT EVER. BY BROOKE INFUSINO n Sussex County, Del., perched over the Indian River – an inlet to the Atlantic Ocean – is a concrete bridge that, to the unaware, appears to be a perfectly sound structure. Although the existing Indian River Inlet bridge is safe, severe scouring that has taken place over the years combined with the corrosive action of saltwater on the bridge’s steel H-piles eventually will compromise the bridge’s safety. To eliminate the concern over scouring, the Delaware Department of Transportation (DelDOT) embarked on a new replacement cable-stay span bridge over the river. One of the major requirements for the design/build project is for the bridge to span the 500-foot river inlet entirely, eliminating the need to place piers in the water. In February 2008, DelDOT embarked on the process of narrowing down a short list of design/build contractors to build the Indian River Inlet Bridge. Skanska Southeast was awarded the $150 million design/build project in August 2008. Of the three proposals received for the project, Skanska had the lowest price, highest technical score and proposed the quickest estimated completion time, Skanska Project Manager Jay Erwin Jr. says. “This was a more aggressive delivery method in which the contractor was responsible for a portion of the design,” Erwin notes. “The design/build procurement process was more aggressive and more economical for the owner.” The existing Indian River Inlet Bridge is monitored to ensure it remains safe while the new bridge is being constructed. Monitoring techniques include yearly visual inspections, underwater dive inspections, annual bathymetric surveys, sonar devices and pier sensors. Civil | DELAWARE DOT: INDIAN RIVER INLET BRIDGE »The new Indian River Inlet Bridge in Sussex County, Del., will utilize an innovative wireless monitoring system. Designing the Structure The Indian River Inlet Bridge will feature two 240-foot-high towers, or pylons, on each side of the bridge with single plane cable stays. The current Indian River Inlet Bridge has support piers in the inlet and no supporting towers. “This is the fourth bridge that has been constructed over this inlet since 1934, so it proves that it is a very harsh environment,” DelDOT Assistant Project Manager Karen Cormier explains. “We had to be very careful with the geological conditions. It’s in the middle of a state park and recreational area with tourism and boating going on year-round.” Under the contract, Skanska had to avoid placing any shoring or scaffolding in the water while building the structure. This required the construction of a long-span bridge. The new bridge also will be 2,600 feet long, including a 900-foot clear span over the inlet, with 1,700 feet of bridge decking over the land. All supports will be out of the water, eliminating the conditions that now exist with the Delaware DOT: Indian River Inlet Bridge www.deldot.gov • Project value: $150 million • Site: Sussex County, Del. a • Scope: Construction ofbrid2,600foot-long cable-stay ge “The design/build procurement process was more aggressive and more economical for theska PM owner.” –Jay Erwin Jr., Skan DECEMBER 2009 CONSTRUCTION-TODAY.COM
Table of Contents for the Digital Edition of Construction Today - December 2009
Construction Today - December 2009
2010 Construction Forecast
Product Showcase: Hand Tools
F&R Construction Group Inc.
Suffolk Construction: Met 2
Weitz Co.: Solaris at Crossroads
Chance Construction Co.
Allied Building Products Corp.
Bird Construction Co. Inc.: Condado Vanderbilt Hotel
Broccolini Construction Inc.: EDC Headquarters
CJ Pink Ltd.
Cobra Corporate Management Inc.
DDRM: The St. Regis Deer Crest Resort
T.N. Ward Co.
EllisDon: North Park Quad Pad Arena
Blumenfeld Development Group & Forrest City Ratner – East River Plaza
Clark Construction: Michigan International Speedway
Morton Buildings Inc.
Triangle Associates Inc.: The Gallery on Fulton
Vogel Bros. Building Co.
Walsh Construction: Mercy Corps.
Wasatch Advantage Group: San Tropez
John W. Danforth Co.
Shore Environmental LLC
American Civil Constructors Inc.
Archer Western: I-75/I-475 Reconstruction
Cleland Site Prep Inc.
Delaware DOT: Indian River Inlet Bridge
Goodfellow Bros. Inc.
International Construction Equipment Inc.
Kiewit Pacific Co.: SR 519 – Seattle Intermodal Access Project
Plaza Construction Corp.
B. Gottardo Construction Ltd.
Bergmann Associates: Walkway Over The Hudson
Craig Olden Inc.
G.M. Sipes Construction Inc.
Idaho Sand & Gravel Co.: Ten- Mile Interchange
Malcom Drilling Co. Inc.
Mid Eastern Buildings Inc.: Southampton Wastewater Treatment Plant
Minnesota Department of Transportation: I35W Crosstown/ Urban Partnership
Nicholson Construction Co.
Papich Construction Co. Inc.: Route 46 Expansion Project
Tilcon New York Inc.: Interstate
Tyam Excavation and Shoring Ltd.
W.C. English Inc.: U.S. 321
West Electric Corp.
Turner Construction Co.: Eastern High School
Gafcon Inc.: Carlsbad High School Modernization Project
DASNY: Gouverneur Healthcare Services
Stuart Olson: University of Lethbridge Markin Hall
University of Houston Student Housing
HDR Architecture Inc.
Marshall-Lee Construction Corp.
RA-LIN & Associates
Suffolk Construction: Boston Renaissance Charter School
Suffolk Construction: FIU School of International and Public Affairs
Tower Construction: Huntington Memorial Hospital expansion
Absher Construction Co.: Chief Sealth High School and Denny International Middle School
Casey Middle School
Cedar Ridge High School
Clark: Lowell Reception Center
Gilbane/Banks Joint Venture: Coppin State University
Hensel Phelps Construction Co.: FORSCOM/USARC New Headquarters
Shaw Construction: Mesa State College Student Center
Shiel Sexton: Butler University
SpawGlass Contractors Inc.: Austin Community College Rio Grande Campus Parking Garage
Stuart Olson: New Edmonton Remand Centre
The Christman Co.
Turner Construction Co
Weddle Construction Ltd.
Kite Realty Group Trust: Eddy Street Commons at NotreDame
Last Look: DANSY
Construction Today - December 2009