Engineering Inc - May/June 2017 - 20

GRANDAWARDS

ACEC 201 7
ENG I NE E R I N G
EXCE L L E N C E
AWA R DS

Foundation Design for the New
N.Y. Bridge (Tappan Zee Bridge
Replacement)
Hudson River between South
Nyack and Tarrytown, New York
GZA GeoEnvironmental
Norwood, Massachusetts
Innovative pile foundation units will
support two new 3-mile-long multispan
structures for the new Tappan Zee Bridge
replacement across the Hudson River. The
project team overcame ground conditions
that slope dramatically along the bridge
route, including one-third of the alignment
where the bedrock is more than 700 feet
below weak river bottom deposits. Extensive
subsurface testing and analysis precisely
defined the size, length and required
capacity of the 1,100 foundation support
piles for the new superstructure. The
foundation system is designed to last 100
years without major structural maintenance
and will safely accommodate future rail
service and a pedestrian/bicycle path.

20

ENGINEERING INC.

MAY / JUNE 2017

U.S. 84 Mississippi
River Bridge
Pin-and-Link Replacement
Natchez, Mississippi
HNTB Corp.
Baton Rouge, Louisiana
Using a process never before
attempted to replace the most
deteriorated structural components of
a 75-year-old bridge, the project team
extended the structure's life another 40
years and avoided the time and
expense of building a new bridge. By
developing highly detailed plans and
guidance for removing damaged pins
and links, as well as rivets, the margin
for error was reduced to almost zero.
Despite many risks and unknowns,
the pin-and-link replacement was
completed successfully and restored a
vital connector between Natchez,
Mississippi, and Vidalia, Louisiana.



Table of Contents for the Digital Edition of Engineering Inc - May/June 2017

Engineering Inc - May/june 2017
Contents
From Acec to You
Market Watch
Legislative Action
2017 Annual Convention Wrap-Up
Acec 2017 Engineering Excellence Awards
Sustainable Cities Worldwide
Joint Coalitions Roundtable
Grooming Future Engineers
Guest Column
Mergers and Acquisitions
Members in the News
Business Insights
Engineering Inc - May/June 2017 - Intro
Engineering Inc - May/June 2017 - Engineering Inc - May/june 2017
Engineering Inc - May/June 2017 - Cover2
Engineering Inc - May/June 2017 - Contents
Engineering Inc - May/June 2017 - 2
Engineering Inc - May/June 2017 - 3
Engineering Inc - May/June 2017 - From Acec to You
Engineering Inc - May/June 2017 - 5
Engineering Inc - May/June 2017 - Market Watch
Engineering Inc - May/June 2017 - 7
Engineering Inc - May/June 2017 - Legislative Action
Engineering Inc - May/June 2017 - 9
Engineering Inc - May/June 2017 - 2017 Annual Convention Wrap-Up
Engineering Inc - May/June 2017 - 11
Engineering Inc - May/June 2017 - 12
Engineering Inc - May/June 2017 - 13
Engineering Inc - May/June 2017 - 14
Engineering Inc - May/June 2017 - 15
Engineering Inc - May/June 2017 - Acec 2017 Engineering Excellence Awards
Engineering Inc - May/June 2017 - 17
Engineering Inc - May/June 2017 - 18
Engineering Inc - May/June 2017 - 19
Engineering Inc - May/June 2017 - 20
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Engineering Inc - May/June 2017 - 47
Engineering Inc - May/June 2017 - 48
Engineering Inc - May/June 2017 - 49
Engineering Inc - May/June 2017 - 50
Engineering Inc - May/June 2017 - 51
Engineering Inc - May/June 2017 - Sustainable Cities Worldwide
Engineering Inc - May/June 2017 - 53
Engineering Inc - May/June 2017 - 54
Engineering Inc - May/June 2017 - 55
Engineering Inc - May/June 2017 - 56
Engineering Inc - May/June 2017 - 57
Engineering Inc - May/June 2017 - Joint Coalitions Roundtable
Engineering Inc - May/June 2017 - 59
Engineering Inc - May/June 2017 - Grooming Future Engineers
Engineering Inc - May/June 2017 - 61
Engineering Inc - May/June 2017 - 62
Engineering Inc - May/June 2017 - 63
Engineering Inc - May/June 2017 - 64
Engineering Inc - May/June 2017 - Guest Column
Engineering Inc - May/June 2017 - Mergers and Acquisitions
Engineering Inc - May/June 2017 - 67
Engineering Inc - May/June 2017 - Members in the News
Engineering Inc - May/June 2017 - 69
Engineering Inc - May/June 2017 - 70
Engineering Inc - May/June 2017 - 71
Engineering Inc - May/June 2017 - Business Insights
Engineering Inc - May/June 2017 - Cover3
Engineering Inc - May/June 2017 - Cover4
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