1 P H I L L I P S T O N Route 2 Over Route 2A SPMT Heavy Lift September 8, 2015| Leading the Nation...

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P H I L L I P S T O NRoute 2 Over Route 2A SPMT Heavy Lift

April 19, 2023| Leading the Nation in Transportation Excellence | www.mass.gov/massdot


P H I L L I P S T O N

Route 2 Over Route 2A PURPOSERemove and replace the existing structurally deficient bridge superstructure carrying Route 2 over 2A. Replacement required because of superstructure deterioration and damage by truck collisions. To avoid future collisions, vertical clearance increased to 16'-6".

SCOPE OF WORKReplace existing superstructure with new steel stringers and cast-in-place concrete deck.New superstructure be built on temporary shoring adjacent to the bridge. During an eight-day one week shut down, Route 2 traffic was detoured via the Exit 18 eastbound off- and on-ramps so that the existing superstructure could be removed, the new superstructure rolled into place, and the Route 2 approaches raised.



Route 2 Over Route 2A

COST$3.3 million (includes design and construction costs).

SAVINGSEstimated savings of $2.5 million in costs to road users.

FIRSTS Fastest bridge replacement in the Commonwealth’s history.MassDOT’s first use of self-propelled modular transporters.

Time Savings:

14 months and $’s



Route 2 Over Route 2A INNOVATION DRIVERSDue to high traffic volumes, extended bridge closure would result in significant impacts to public.

APPLIED INNOVATIONDesign-Build project delivery method. Design Engineer and Contractor working together. The design and construction overlapping.Heavy Lift Technology using self-propelled Goldhofer trailers.Utilized 2 Incentive/Disincentive Clauses:

* Reduce Duration of Total Contract Time.* Reduce Duration of Road Closure.

REDUCED DURATION OF ROAD IMPACTS BY 14 MONTHS.RTE. 2 IMPACTS ONLY LASTED 121 HRS CONTRACT ALLOWED A 202 HRS DETOUR.



Route 2 Over Route 2AInnovation Case Study - Innovation Case Study -

Phillipston Phillipston

TRADITIONAL 3-PHASE CONSTRUCTIONACCELERATED CONSTRUCTION TECHNIQUES

18 to 20 Months Duration

Traffic detoured or delayed for over 14 months

9 Months Duration

Traffic detoured or delayed for only 121 hours



Route 2 Over Route 2A

TIMELINEAdvertizing Date February 6, 2010.Bid Date April 21, 2010.Award Date April 28, 2010.Notice to Proceed April 29, 2010Design May – October 2010.Started Physical Work on June 8, 2010.Demolition and Bridge Move October 22 at 7:00 P.M. - 30 at 7:45 P.M. Physical Work Substantially Complete October 30, 2010 at 7:45 P.M.



Route 2 Over Route 2AAerial View of Project



Route 2 Over Route 2AAnatomy of the Bridge



Route 2 Over Route 2AThe Concept of the Move


September 15, 2010 Erect Temporary Shoring


September 21-22, 2010 Beam Erection


September 23, 2010 Forming Deck


September 29, 2010 Deck Pour


Route 2 Eastbound Detour October 22 7:00 P.M. – October 30 7:45 P.M.


Route 2 Westbound Detour October 22 7:00 P.M. – October 30 7:45 P.M.


October 25, 2010 7:08 AM Demolition


October 25, 2010 Demolition


Movement Plan


October 27-28, 2010 Bridge in Motion


October 28, 2010 Bridge in Place at 3:30 A.M.


October 30, 2010 Bridge Open at 7:45 P.M.



Route 2 Over Route 2AP H I L L I P S T O N

Route 2 Over Route 2A LESSONS LEARNEDAdvertise in Summer for majority of design during Winter. This will optimize construction season and move completion out of the Fall.Closely monitor/enforce Quality Control. Accelerated schedule can lead to loss of quality.Accelerated construction techniques do not translate to standard bridge details based on a different sequencing of construction.Clearly define Quality Assurance criteria.Increased safety, schedule flexibility and shifts that will not effect traffic, work done off major route.Incentive and disincentive clauses are effective and expedites the project.


SPMT LESSONS LEARNEDSpecify SPMT best suited for the project.Maneuverability is nice but has trade offs. Certain sites, straight moves, over even terrain, may not require more expensive SPMTs. Our SPMT wheels had capability to turn 60 degrees, OK for a straight move like Phillipston. 90 degree turning SPMTs are available but would add cost.Assurance that each pair of SPMTs move unilaterally is important. Helpful to monitor distance between pairs of SPMTs using some sort of rigid bracing. It was represented that this would not be necessary as there is one “brain” to move two SPMTs. Not entirely true. The brain moves the SPMTs together, but doesn’t monitor the exact distance between units – this was monitored manually during the move.Having plenty of vertical stroke on the SPMTs is important. This was not an issue in Phillipston, but is worth mentioning on other projects. You really have to be careful that you have enough stroke to clear all temporary structures upon lifting, have enough stroke to handle the terrain, and have enough to clear the new beams seats/bearings.


SPMT LESSONS LEARNED CON’TThe Site Safety Briefing before the Bridge Move should be required by specification.The SPMTs in Phillipston did not have the capability to lower the entire trailer uniformly. Our units could only lower front end, then back end. This became an issue during the “landing” of the bridge. Until the right operator could take care of this manually, it was a struggle to land the bridge on the bearings without walking to one side or the other. Having SPMTs that lower uniformly would have made quicker.Any opportunity to prefabricate the bridge off-site, is recommended. This allows more time to bring in the SPMTs earlier for setup, outside of any traffic restrictions. Philllipston site didn’t allow this without moving bridge several thousand feet, if there is room on site, outside traffic, is preferable.Have provisions for shimming bearings after the bridge move is important, which we had.Specify or consider provisions to stabilize temporary earth ramps for the SPMTs. Wet weather required the ramps to be plated.


A Success Story: The Commonwealth’s First Heavy Lift Bridge Project

AWARDSWomen in Transportation Seminar Massachusetts Chapter's 2011 Innovative Transportation Solutions AwardAmerican Council of Engineering Companies of Massachusetts' 2011 Gold Award for Professional Design ExcellenceConstruction Management Association of America, New England Chapter’s Infrastructure Project of the Year Award (project under $10M).2011 AASHTO’s America’s Transportation Award Honoree (competition of 10 nation wide projects)

http://www.youtube.com/watch?v=B-6hN-8cHh8&feature=player_detailpage



1 P H I L L I P S T O N Route 2 Over Route 2A SPMT Heavy Lift September 8, 2015| Leading the Nation...

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