7 CMGC Procurement Methodology

The 2013 – 2019 Winona Bridge project is MnDOT’s first Contract Manager/General Contractor (CMGC) project
BENEFITS OF THE CMGC
PROCUREMENT METHODOLOGY
The importance of starting construction work on the project
in Sepotember of 2014 cannot be understated. To accomplish
this goal, the use of the CMGC procurement methodology was
the key critical element to success. CMGC allowed accelerated
design plan review and approvals and very compressed bid
package advertisement timelines. This allowed work packages
1-3 to all stay on schedule.
The overarching goal of placing Trunk Highway 43 traffic on
the new bridge by fall 2016 is currently on target. The Winona
Bridge project management team feels there is less than a 5%
chance this same goal would have been met with traditional
design-bid-build (DBB) contracting, while at the same time DBB
would have led to increased costs.
To meet the aggressive schedule, the project team has jointly
developed numerous submittals under the Professional/
Technical contract utilized during the CMGC design phase.
Long lead time items such as the cofferdam designs,
vibration and settlement monitoring plan, project schedule,
environmental management plan and storm water prevention
plan, and the scour mitigation plan were all done well in
advance of when they would have been in DBB. This fact alone
would have delayed any new construction on the project until
the spring of 2015 using the DBB process.
SAVING TIME
CAS E S TU DY
CMGC PROCUREMENT METHODOLOGY
S AV E S M O N E Y
Delaying the start of permanent construction into 2015 under
DBB would have added approximately $1 million to the project
costs due to wage increases, inflationary costs, and wintertime
construction. In addition, the DBB approach would have put the
project schedule at the mercy of spring 2015 Mississippi River
flooding. Any river flooding, such as in 2014, could have led
to significant project delays causing flooding risks (costs) of
around $750,000.
With DBB, the placement of traffic on the new bridge likely
would have been in the fall of 2017, with a conservative cost
increase of $1.75 million (not including the increased costs of
maintaining the existing bridge, or factoring the increased risk
of a bridge closure).
$1.75 million
ESTIMATED CMGC
COST SAVINGS
FOR MORE INFORMATION ON
THE WINONA BRIDGE PROJECT
AMES CONSTRUCTION IS THE WINONA
BRIDGE CMGC CONTRACTOR
TERRY WARD, PE, MSISE, PMP, PROJECT MANAGER
(507) 286-7688 • [email protected]
The Burnsville, Minnesota, company is also
the GENERAL CONTRACTOR on the nearby
DRESBACH BRIDGE PROJECT (shown).
Or visit WWW.MNDOT.GOV/WINONABRIDGE and
WWW.FACEBOOK.COM/WINONABRIDGE
A history of quality bridge projects, on-time
delivery and professionalism.
Case Study 7

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