asbi segments spring 2010

volume 55, spring 2010

editorialThe Beneficial Use of Fly Ash in Concrete

In December 2008, a dike failure at a Tennessee Valley Authority Coal Combustion Waste Containment Area resulted in a spill of over 1 billion gallons of ash slurry into Kingston, Tennessee. Clean up costs are estimated to be over $1 billion and this accident spurred the Environmental Protection Agency (EPA) to evaluate the status of coal combustion waste storage and disposal. In the U.S., 131 million tons of waste is produced yearly.

At present, the EPA does not regulate coal combustion waste but provides recommendations for its storage and disposal. In 2000, the EPA published a regulatory determination that these wastes are not hazardous and has encouraged its beneficial use. The benefits provided by fly ash to the concrete segmental bridge industry are significant:

• It makes concrete denser and less permeable to water and chloride intrusion.

• It mitigates against the deterioration of concrete from alkali-silica reactivity where certain types of aggregate react with the alkalis in the cement.

• It slows the rate of temperature gain due to cement hydration and minimizes thermal cracking in concrete.

• It increases the workability of concrete resulting in fewer voids in the placed concrete.

These benefits all contribute to stronger and longer lasting concrete bridges.

The use of fly ash as a partial cement replacement establishes the construction of concrete bridges as a potential key component of a sustainable transportation system. The principals of “green” construction are achieved through the recycling of this beneficial waste material, eliminating millions of tons of greenhouse gases produced annually from the production of portland cement.

The EPA’s decision on regulating coal combustion waste, including fly ash, is expected to be announced soon. Should these materials be reclassified as hazardous waste, the beneficial use will be impacted due to negative perceptions and potential legal liabilities of incorporating “hazardous waste” into public works projects. We will all have an opportunity to voice our concerns during the open comment period when the proposed rules are issued. For more information on the proposed coal ash rule, visit the EPA Rulemaking Gateway (http://yosemite.epa.gov/opei/RuleGate.nsf/).se

gments

1AMERICAN SEGMENTAL BRIDGE INSTITUTE www.asbi-assoc.org

Editorial by W. R. "Randy" CoxManager, ASBI

http://www.asbi-assoc.org


2010

GroutinG CertifiCation traininG

april 12–13, 2010

J.J. Pickle Research Campus

The Commons Center, 10100 Burnet Road, Building 137

Austin, Texas

1

Co-SponSored by the

texaS department of tranSportation

2 | SEGMENTS, Spring 2010

contents communication news New ASBI Organizational Members ........................ 2

Grouting Certification Training ................................... 2

2010 Construction Practices for Segmental Concrete Bridges Seminar ..................... 2

RS&H Announces Promotions ................................... 3

Moved and Have a New Address ............................. 3

Calendar of Events ....................................................... 3

2009 Convention ....................................................... 4, 5

2010 Convention ........................................................... 5

project news Route 36 Bridge New Jersey ............................................................... 6, 7

SR1 Bridge Over the Indian River Inlet Rehoboth Beach, Delaware ....................................... 8

I-76 Allegheny River Bridge Oakmont, Pennsylvannia ............................................ 9

Gulf Intracostal Waterway Bridge Matagorda, Texas ................................................ 10, 11

Fourth Street Bridge Pueblo, Colorado ........................................................ 12

Ramp SW Over I-5 Tocoma, Washington ................................................. 13

US 191 Bridge Over the Colorado River Moab, Utah............................................................ 14, 15

Earlington Heights Connector Miami, Florida ............................................................. 16

2010 Construction Practices for Segmental Concrete Bridges Seminar

The first 2010 seminar on Construction Practices for Segmental Concrete Bridges was held in Denver on February 17-18 with 111 attendees. The second seminar will be held on June 22-23 in Orlando at the Renaissance Orlando Hotel Airport.

Please visit www.asbi-assoc.org under News & Events for further information, as well as, a link for online registration and hotel information.

Grouting Certification Training2010 ASBI’s annual Grouting Training held on April 12-13

at the J.J. Pickle Research Campus in Austin, Texas, was attended by 89 registrants with 22 certified as Technicians.

2011 Next year’s training will again be held at the J.J. Pickle Research Campus on April 18-19 in Austin. Please check the ASBI website www.asbi-assoc.org for online registration.

communication news

Route 36 Bridge, New Jersey.(Photo Courtesy of DSI)

New ASBI Organizational MembersWe are pleased to welcome following new members to ASBI:

Archer Western Contractors, Ltd.3715 Northside Parkway, Suite 550Atlanta, GA 30327(404) 495-8700FAX: (404) 926-0778e-mail: [email protected] Casey

Buckland & Taylor Ltd.101-788 Harbourside DriveNorth Vancouver, BCV7P 3R7 Canada(604) 986-1222FAX: (604-986-1302e-mail: [email protected] Bergman

EFCO Corp.1800 NE Broadway AvenueDes Moines, IA 50313(515) 313-4243FAX: (515) 313-4423e-mail: [email protected]

[email protected] JohnsonPaul Jennings

Epoxy Interest Group of CRSI933 Plum Grove RoadSchaumburg, IL 60173(847) 517-1200FAX: (847) 517-1206e-mail: [email protected] McDonald, Ph.D., P.E.

PCL Constructions Services, Inc.15405 SE 37th Street, Suite 200Bellevue, WA 98006(425) 454-8020FAX: (425) 454-5924e-mail: [email protected] Malone

Zhengzhou Dafang Bridge Machine Co., Ltd.P.O. Box 10201, South Segment of Zhengmi RoadZhenghou, Henan, China 450005+86-135-03831409FAX: +86-371-67833261e-mail: [email protected]/enKefeng Wan



mailto:[email protected]

http://www.walshgroup.com


http://www.b-t.com



http://[email protected]


http://www.epoxyinterestgroup.org


http://www.pcl.com


http://www.zz-df.com.cn/en

SEGMENTS, Spring 2010 | 3

Calendar of Events

May 23-27 AASHTO SubCom on Bridges & Structures Annual Meeting (Sacramento, California) The California Department of Transportation is proud to host the 2010 Annual Meeting of the AASHTO Subcommittee on Bridges and Structures, Sheraton Grand Sacramento.

May 24 Board of Directors Meeting and Reception (Sacramento, California) The ASBI Board of Directors Meeting will be held at the Sheraton Grand Sacramento from 3:00 p.m. – 5:00 p.m. in the Bondi Room followed by a reception from 6:00 p.m. – 8:00 p.m. in the Gardenia Room.

May 29 - June 2 fib Congress / PCI Convention (National Harbor, Maryland) Record numbers of technical papers and exhibitors await attendees of the Third International fib Congress, in what promises to be a landmark, must-attend event for those involved in the concrete, building, and bridge industries. The fib Congress will be held this spring outside Washington, D.C., in conjunction with the 2010 PCI Annual Convention and Bridge Conference. The event has already attracted extensive U.S. and international interest. With over 500 papers and 100,000 square feet of exhibits, the Congress will be the largest event in PCI’s 56-year history.

June 22-23 Seminar on Construction Practices for Segmental Concrete Bridges (Orlando, Florida) The Construction Practices Seminar is designed as an educational training program based on the “ASBI Construction Practices Handbook for Segmental Concrete Bridges” (2008 second edition) for the purpose of providing comprehensive coverage of the state-of-the-art construction practices related to segmental concrete bridges.

October 11-12 ASBI 22nd Annual Convention — Mark Your Calendar! (Vancouver, BC) Join us at the Westin Bayshore for the 22nd Annual ASBI Convention.

December 1-3 TRB 7th International Bridge Engineering Conference (San Antonio, Texas) Improving Reliability and Safety - Restoration, Renewal, and Replacement conference is designed to increase the body of knowledge and literature aimed at solving engineering and management issues unique to highway infrastructure such as bridges, culverts and tunnels; and to foster direct communication on research results and innovative practices among engineers, researchers, and administrators.

RS&H Announces Promotions

RS&H announced the promotions of Dale Barnes and Doug Geiger, effective April 3, 2010. Mr. Barnes will serve as Chairman of RS&H CS and move to Senior Consultant status with RS&H CS in September, continuing his role as Chairman. Mr. Geiger will serve as President of RS&H CS. Mr. Barnes and Mr. Geiger are ASBI Board of Directors Member Representatives for RS&H CS.

Moved and Have a new address

Please let us know if you have had an address change and include new telephone and fax numbers, as well as e-mail addresses. You may send any updates to [email protected].

Dale Barnes(Photo Courtesy of RS&H)

Doug Geiger(Photo Courtesy of RS&H)


2009 ASBI Annual Convention

The 2009 ASBI Annual Convention was held on October 25-27 at the Hilton Minneapolis. The Convention was well attended with 325 registrants and 31 exhibitors.

The bridge tour included the Crosstown Project, the Wakota Bridge Project, and the IH35W St. Anthony Falls Bridge.

(Photos Courtesy of ©2009 Bruce Challgren PhotoPixels)

1A m e r i c A n S e g m e n t A l B r i d g e i n S t i t u t e

AECOM

Archer Western Contractors, Ltd.

Armeni Consulting Services, LLC

Atkinson Construction

AVAR Construction Systems, Inc.

BASF Construction Chemicals, LLC

Bayshore Concrete Products Corporation

Beiswenger Hoch and Associates

Bentley Systems, Incorporated

Buckland & Taylor Ltd.

California Department of Transportation

CH2M Hill

Condotte America, Inc.

Corven Engineering, Inc.

DEAL/Rizzani de Eccher USA, Inc.

The D.S. Brown Company

Doka USA, Ltd.

Dywidag Systems International, USA, Inc. (DSI)

EFCO Corp.

Eisman & Russo, Inc.

Enerpac Precision SURE-LOCK

Epoxy Interest Group of CRSI

FHWA, Office of Bridge Technology

FIGG

FINLEY Engineering Group, Inc.

FLATIRON

Florida Department of Transportation

F&M Mafco, Inc.

Freyssinet, Inc.

GPRM Prestress

General Technologies, Inc.

Georgia Department of Transportation

Granite Construction Co.

HDR Engineering, Inc.

HNTB Corporation

International Bridge Technologies, Inc.

Kiewit Pacific Company

LARSA, Inc.

Leader Graphic Design, Inc.

McNary Bergeron & Associates

MEXPRESA

NRS-USA

PBS&J

PCL Civil Constructors, Inc.

PCL Construction Services, Inc.

Parsons

Parsons Brinckerhoff, Inc.

PERI Formwork Systems, Inc.

Post-Tensioning Institute (PTI)

Precast /Prestressed Concrete Institute (PCI)

Reynolds, Smith & Hills Construction Services

Schwager Davis, Inc.

Sika Corporation

Southern Forms, Inc.

Strukturas AS

SYSTRA

T.Y. Lin International

Texas Department of Transportation

Traylor Bros., Inc.

Unistress Corp.

URS Corporation

VSL

Watson Bowman Acme – A BASF Company

Williams Brothers Construction Co., Inc.

Williams Form Engineering Corporation

Zhengzhou Dafang Bridge Machine Co., Ltd.

22nd Annual

The Westin Bayshore, Vancouver, BCCONVENTION

October, 11-12, 2010

ASBI 2010 Members

11861_ASBI_Convention_Reg_Flyer10.indd 1 4/19/10 9:34:26 AM


We hope you will join us in Vancouver, BC at the Westin Bayshore on October 11-12 for the 22nd Annual Convention. Please see News & Events at www.asbi-assoc.org. for further information and online registration.

The 2009 ASBI Bridge Awards of Excellence were presented to:

Confusion Hill—South Fork Eel River, California DOT

The New IH35W Bridge, Minnesota DOT

I-280 Veterans’ Glass City Skyway, Ohio DOT

Maroon Creek Bridge, Colorado DOT

Sound Transit Central Link Light Rail, Tukwila Segment, Seattle Sound Transit

(Photos Courtesy of ©2009 Bruce Challgren PhotoPixels)



Segmental construction of the new RT36 eastbound bridge superstructure is completed and open to traffic. New Jersey’s second precast segmental bridge, when fully completed, will serve as a gateway to the shore towns of Highland and Sea Bright in Monmouth County, NJ. The structure crosses the Shrewsbury River and will ultimately replace the functionally obsolete and structurally deficient 75 year-old, double-leaf bascule bridge.

The new 8-span bridge, being construct-ed by J.H. Reid General Contractor, boasts a modest main span of approximately 232' over the navigational channel and will provide a minimum vertical clearance of 65' above mean high water elevation (Fig. 1 and 2). When completed, the sister bridges (eastbound and westbound) will be approximately 1,611' long with a deck width of approximately 46', each.

Route 36 Bridge, New Jersey J.H. Reid is using a Manitowoc 4100

Ringer Crane to erect the pre-cast girder segments which are being manufactured by Unistress Corporation in addition to pre-cast pier columns. Unistress began casting segments at their Pittsfield, MA production facility in September 2008 with the eastbound pier column segments and completed them in December of the same year. Westbound pier casting began in May 2009 and was completed in December 2009 bringing a close to production of 98 substructure segments required for the project.

Casting of the 384 superstructure segments began in October 2008 and will continue through June 2010. Production of the eastbound superstructure segments were competed August 2009 (Fig. 3). J.H. Reid is currently constructing westbound land piers and has begun driving piles for westbound river piers.

project news

Figure 2 - (Photo Courtesy of DSI)



Segment erection of the westbound river piers is scheduled to begin mid-March 2010 with superstructure erection following closely behind in April. Superstructure and substructure segment erection will occur concurrently. Anticipated project completion is end of year 2010. Demolition of the existing bridge is also being performed at this time.

DYWIDAG-Systems International U.S.A., Inc. (DSI) is working closely with J.H.Reid to supply post-tensioning material, engineering services and long-term field technical assistance during segment erection and post-tensioning installation (Fig. 4). DSI is supplying over 615 tons of 0.6" diameter strand (120 tons is epoxy coated for use in the precast piers), as well over 163,000 lbs. of 13/8" diameter GR150 Threadbar®. The project specification requires the tendons have a substantially high level of corrosion protection and in response to this requirement; DSI is supplying their System 100 Multi-Plane Anchorage System designed for extended service life structures. The multi-strand tendon sizes used on the project are 4-0.6", 12-0.6", 15-0.6", 19-0.6" and 27-0.6".

Owner: New Jersey Department of TransportationDesigner: Jacobs Civil Inc.Contractor: J.H. Reid General ContractorConstruction Engineer: T.Y. Lin International (for NJDOT)

McNary Bergeron & Associates (for J.H. Reid)Construction Engineering Inspection: GRL Engineers Inc.Formwork for Precast Segments: EFCOPrecast Segments: Unistress CorporationPost-Tensioning Materials & Field Technical Assistance: DYWIDAG Systems

International USA, Inc.Bearings: – Seismic Energy ProductsEpansion Joints – Watson Bowman Acme - A BASF CompanyEpoxy Supplier and Prepackaged Grout: Sika Corporation

When completed, the project will include architectural features that will reflect the historic setting and character of the existing bridge, including two monuments located at the bridge abutments. As defined by NJDOT, the new bridge’s historic features include:

• Decorative fish tiles replicated from the existing bridge to be located on the pylons and light pole pilasters.

• A five-bar open steel rectangular railing to enhance the openness of the bridge and provide unobstructed views of the Atlantic Ocean.

• Rustications/reveals in the pier columns and form liners on the waterline footings.

Figure 3 - (Photo Courtesy of Unistress Corporation)


Figure 5 - (Photo Courtesy of AECOM)

Figure 6 - (Photo Courtesy of AECOM)


SR1 Bridge over Indian River Inlet, Rehoboth Beach, Delaware

As of February 2010, AECOM has completed the design of the new SR1 Bridge over the Indian River Inlet (Fig. 5 and 6) and Skanska USA Civil Southeast has completed approximately 50% of the construction. The Design-Build team started in September of 2008 and the new 2,600-ft. long cable-stayed bridge will be opened to traffic by April of 2011. Skanska is building the bridge from both sides of the inlet simultaneously. The project is currently on schedule.

All of the 36-inch square prestressed concrete pile foundations have been successfully driven to 1,800 ton capacity. All footings have been completed with column construction on-going. The four pylons are approximately 60% complete (150-ft. constructed and top out at 240-ft.). Each pylon will support 19 cable stays in a semi-harped arrangement. The pylons are being constructed in 18-ft. lifts using a PERI form system. Four sets of forms are being used to construct all of the pylons simultaneously. Two tower cranes are being used to construct the pylons and two additional tower cranes will be used to construct the superstructure.

The 400'-950'-400' cable-stayed superstructure spans are comprised of reinforced concrete longitudinal edge girders and transverse floor beams. Superstructure over land is being constructed on falsework with a combination of cast-in-place longitudinal

edge girders and precast transverse floor beams. The floor beams are spaced on 12-ft. centers and cable stays are on 24-ft. centers. The portion of the 950-ft. long main span over the water will be constructed with a cast-in-place form traveler using the cantilever method of erection. Form traveler segments are 24-ft. long. Post-tensioning is used in all of the floor beams, in portions of the edge girders, and in portions of the deck. By the middle to end of June stay erection will be in progress, and cantilever erection with the form traveler over the Inlet will have started. The pylons are on schedule to be topped out by mid June.

The design-build team created a simple and slender structure that continues to be embraced by the community. As the structure takes shape, the design theme is being proven out: Maintain unobtrusive views of the Atlantic Ocean and don’t overpower the quiet beach community with a massive structure.

Owner: DelDOTDesigner: AECOMDesignBuild Team: Skanska - AECOMContractor: SkanskaConstruction Engineering Services: AECOM (Erection Analysis) and Finley Engineering Group (Falsework)Construction Engineering Inspection: Parson BrinckerhoffPrecast Producer: Bayshore Concrete

ProductsFormwork for Pylon: PERI Formwork

SystemsForm Travelers for Cast-in-Place Segments: StrukturasPost-Tensioning Materials: Freyssinet, LLCStay Cable Materials: Freyssinet, LLCBearings: R.J. Watson and

The D.S. Brown CompanyExpansion Joints: Freyssinet, LLCPrepackaged Grout: Sika Structural Steel Cable Stay Anchor Boxes: CianbroWind: RWDIGeotechnical: S&MEBridge Design: IBT


will accomplish the Pennsylvania Turnpike Commission’s goals of a safer, more pleasing experience for customers. Long, open spans and construction from above create an environment friendly

The eastbound lanes of the new Allegheny River Bridge (Fig. 7) opened to traffic on October 25, 2009. As Pennsylvania’s first concrete segmental bridge to be built using balanced cantilever methods, the bridge will also hold the record for the state’s longest concrete segmental span at 532'.

Designed by FIGG and being built by Walsh, the new 2,350' twin structures

Owner: Pennsylvania Turnpike CommissionDesigner: FIGGContractor: Walsh ConstructionConstruction Engineer: T.Y. Lin InternationalConstruction Engineering Inspection: McTish with FIGGForm Travelers for Cast-in-Place Segments: NRSPost-Tensioning Materials/Stay Cables: Schwager Davis, Inc.Epoxy Supplier and Prepackaged Grout: Sika Corporation

Figure 7 - December 2009 – Eastbound lanes of the new I-76 Allegheny River Bridge opened to traffic on October 25. Construction continues on the twin bridge that will carry westbound traffic. (Photo Courtesy of FIGG)

I-76 Allegheny River Bridge, Oakmont, Pennsylvaniabridge that preserves river habitats and archaeological areas below the bridge while also keeping river, rail and vehicular traffic moving. Completion of the westbound bridge is anticipated this fall.


Gulf Intracoastal Waterway Bridge, Matagorda, Texas

The Texas Department of Transportation recently completed a new segmental bridge (Fig. 8, 9 and 10) in place of an old, floating swing bridge that cost about $350,000 per year to operate. Segmental was chosen because it can span 320 feet, is durable and aesthetically pleasing. With adjacent side spans of 180 feet, the 46-foot wide segmental box girder unit runs for a total length of 680 feet.

The traditional form of the segmental box girder and column were altered to create a more cohesive visual connection between column and superstructure. The typical flat-bottom shape gradually gives way to a v-hull shape as it approaches the columns. The bevel is then carried directly into the columns with the same 3:7 bevel to form a perfectly mitered corner. The main piers have a unique double-anchor shape that continues the heavily chamfered appearance of the

Figure 8 - Construction was completed in the summer of 2009 at a cost of 211 $/SF.(Photo Courtesy of Dean Van Landuyt)


Owner: TxDOTDesigner: TxDOT Bridge DivisionContractor: Midwest Foundation CorporationConstruction Engineering Services: Summit Engineering Group, Inc.

& Frank W. Neal & AssociatesConstruction Engineering Inspection: TxDOTForm Travelers for Cast-in-Place Segments: MexpresaPost-Tensioning Materials: VSLPrepackaged Grout: BASF Construction Chemicals, LLC

Figure 9 - Form Traveler

(Photo Courtesy of Michael Mann)

Figure 10 - Night-time lighting of the main piers.

(Photo Courtesy of Dean Van Landuyt)

superstructure. The tips of the anchors curl around to protect and hide light fixtures that illuminate an internal web.

One unusual aspect of construction was the bottom soffit form. Flexible, rotatable “wings” mounted on a central spine allowed for an ever-changing bevel to be cast. In fact, the entire system was designed such that it could be warped. A portion of the forms was clamped to the underside of the previous segment while the leading edge, located 15 feet forward, was opened to a wider angle.


4th Street Bridge, Pueblo, Colorado

Construction continues for the 4th Street Bridge in Pueblo, Colorado. The westbound superstructure was completed in December 2009 and traffic is expected to be moved onto the new structure in the spring. Concrete segmental balanced cantilever construction (Fig. 11) allows the bridge to be built from above as rail operations in the Pueblo Rail Yard continue below.

The twin 1,137' long concrete bridges cross 28 sets of active heavy rail tracks, local roads, and the Arkansas River. When complete (Fig. 12), the main span will hold the record of Colorado’s longest highway span at 378'. Aesthetics selected by the community reflect the themes of Contemporary Sculpture, Pueblo Heritage and the Natural Environment. The bridge was designed by FIGG for the Colorado Department of Transportation and is being built by Flatiron.

Owner: Colorado Department of TransportationDesigner: FIGGContractor: Flatiron Intermountain ConstructorsConstruction Engineer: FINLEY Engineering Group, Inc. Construction Engineering Inspection: FIGGFormwork for Precast Segments: EFCO and DOKAForm Travelers for Cast-in-Place Segments: VSLPost-Tensioning Materials/Stay Cables: VSLBearings and Expansion Joints: Bearings – The D.S. Brown Company;

Joints – Watson Bowman Acme - A BASF CompanyPrepackaged Grout: Sika Corporation

Figure 12 - January 2010 – The year began with great

success at the Fourth Street Bridge in Pueblo, Colorado. Crews achieved closure of the

westbound main span that crosses 23 active tracks in the rail yard below.

(Photo Courtesy of FIGG)

Figure 11 - October 23, 2009 – As trains glided along below, cantilevers continued to extend out one segment at a time to complete the 378’ span. To access the end of the cantilevers, concrete was pumped from the completed cantilever across the opening. (Photo Courtesy of FIGG)


Ramp SW Over I-5, Tacoma, Washington

Atkinson Construction has begun construction of the Washington State DOT’s first precast segmental bridge (Figs 13, 14 and 15). Ramp SW over I-5 in Tacoma’s Westbound Nalley Valley Interchange Project was originally designed by the WSDOT as a steel box girder. However, high steel prices at the time of bid led the contractor to explore the feasibility of a concrete segmental bridge. McNary Bergeron & Associates performed the redesign, which features precast pier segment shells made integral with the columns by a cast-in-place diaphragm. The integral column connection is a key component of the design because of seismic demands.

The 1,060 ft. long superstructure consists of 112 segments, which are being precast off-site using the longline method. The maximum span length is 295 ft. and the deck is 43 ft. wide. Erection will begin in April 2010.

Owner: Washington State Department of TransportationDesigner: Atkinson ConstructionEngineer of Record & Construction Engineer: McNary Bergeron & AssociatesPost-Tensioning System Supplier: Schwager Davis, Inc.Formwork Supplier: Aluma

Figure 14 - Casting long line segment.

(Photo Courtesy of Atkinson Construction).

Figure 13 - Long line form and concrete soffit.(Photo Courtesy of Atkinson Construction)

Figure 15 - End Span Segments.(Photo Courtesy of Atkinson Construction)


Figure 16 - November 2009 – Cantilever construction of the new environment friendly segmental bridge carrying US 191 over the Colorado River is proceeding out from the piers, working above the river, to protect the environment. (Photo Courtesy of FIGG)


Traffic along US 191 in Moab, Utah began using the southbound bridge across the Colorado River on February 8, 2010, just thirteen months after construction began. The bridge (Fig. 16) was designed by FIGG and is being built by Wadsworth Construction for the Utah Department of Transportation. A parallel structure is expected to be complete by the end of the year.

Utah’s first concrete segmental bridge (Fig. 17) will replace the existing bridge with a new, environment friendly design that blends with the pristine landscape. Long, arching spans echo the landscape in nearby Arches National Park. Using a rock texture on the piers and a mineral stain for the concrete will further blend

Figure 17 - Main span closure for the 438’ segmental span creating the southbound US 191 Colorado River Bridge was made on January 25, 2010. (Photo Courtesy of FIGG)

Owner: Utah Department of TransportationDesigner: FIGGContractor: WadsworthBrothers ConstructionConstruction Engineer: Summit Engineering Group, Inc.Construction Engineering Inspection: FIGGForm Travelers for Cast-in-Place Segments: NRS - AsiaPost-Tensioning Materials/Stay Cables: DYWIDAG Systems International, USA, Inc.Bearings and Expansion Joints: Joints – Watson Bowman Acme - A BASF Company

Bearings – The D.S. Brown Company;

the new Colorado River Bridge with its surroundings. The 1,025' bridges feature a 438' main span with only one pier placed in the water. Concrete segmental balanced cantilever construction above the river preserves the environment and maintains recreatinal uses of the river.

US 191 Bridge over the Colorado River, Moab, Utah

16 | SEGMENTS, Winter 2010

editor: W. R. "Randy" Cox

142 Cimarron Park Loop . Suite F . Buda, TX 78610phone: 512.523.8214 fax: 512.523.8213e-mail: [email protected] web: asbi-assoc.org

On December 14, 2009, workers cast the first of approximately 1,000 precast segments for the Miami Intermodal Center (MIC) – Earlington Heights Connector (Fig. 18 and 19). The Earlington Heights Connector consists of 2.4 miles of elevated dual track guideway, including 13 precast segmental bridge units built in balanced cantilever. Spans range up to 260 ft. and segment widths vary from 15' to 28'-10".

The MIC is a giant centralized transportation hub being developed by the Florida Department of Transportation (FDOT) that will provide seamless access to all modes of transportation including Metrobus, Metrorail, Tri-Rail, Amtrak, Greyhound, tour buses, taxi cabs, and rental cars. An automated people mover will connect the MIC to the airport.

Erection of the precast segmental superstructure units (Fig. 20) is scheduled to begin in spring 2010 and will be complete by summer 2011.

Owner: Miami Dade TransitDesigner: URS CorporationContractor: Odebrecht-Tower-Community JV

with Rizzani de Eccher as Segmental Subcontractor

Construction Engineer: McNary Bergeron & Associates and Rizzani de Eccher

Construction Equipment: DEALPost-Tensioning Supplier: DSIBearing Supplier: R.J. Watson

Figure 18 - Segment storage area. (Photo Courtesy of McNary Bergeron & Associates)

Figure 20 - March 2010 – Start of segment

erection and cantilever falsework.(Photo Courtesy of Rizzani de Eccher)Figure 19 -

First precast pier shell segment cast on Dec.14, 2009.

(Photo Courtesy of McNary Bergeron & Associates)

Earlington Heights Connector, Miami, Florida

1AMERICAN SEGMENTAL BRIDGE INSTITUTE s e g m e nt s



asbi segments spring 2010

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