PUBLIC INFORMATION MEETING

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LAKE CHAMPLAIN BRIDGE

PUBLIC INFORMATION MEETING

AUGUST 29, 2006

7:00


9:00 P.M.

BIN 5521180

PIN 1805.81

NYS DEPT. OF TRANSPORTATION, REGION ONE

VERMONT AGENCY OF TRANSPORTATION


BRIDGE BACKGROUND

AGE
:

Built

in

1929
.

Currently

77

years

old
.

SPANS
:

14

spans

with

a

total

length

of

2184

ROADWAY

WIDTH
:

26
.
1


STRUCTURAL

TYPE

OF

BRIDGE
:


Combination

of

thru

truss,

deck

truss,

and

deck

plate

girders
.

VERTICAL

CLEARANCE

ON

BRIDGE
:

14

0


VEHICLE

CLERANCE

UNDER

BRIDGE

(MAX)
:

95

0


AADT
:

Approximately

3400

vehicles

(
2005
)

LOAD

POSTED
:

R



Restricted

(
1994
)

LAST

MAJOR

WORK

COMPLETED

IN

1991
:

Just

15

years

ago
.

CURRENT CONDITION OF BRIDGE
& THUS THE NEED FOR A PROJECT


Condition Rating of Bridge: 3.764 (based on scale of
1 to 7)


Federal Sufficiency Rating of Bridge: 29.2 (based on
a scale 1 to 100)


Piers: Advanced State of Deterioration.


Primary Members: Main Carrying Members


Bridge Bearings


Bridge Joints


Wearing Surface

PRELIMINARY ALTERNATIVES
PERCEIVED AS REASONABLE


Rehabilitation


Replacement

on

Existing

Alignment


Replacement

on

Slightly

Modified

Alignment


Replacement

on

Totally

New

Alignment

(essentially

new

location)

DISCUSSION OF REHABILITATION
ALTERNATIVE

(Minimum Work Required)


Paint

Bridge


Replace

Bearings

(Jack

up

bridge,

pour

new

pedestals,

modify

bearing

connections,

install

new

bearings)


New

Bridge

Deck

Joints


New

Wearing

Surface


New

Bridge

Rail


Steel

Repairs

of

Corroded

Areas

(primary

&

secondary

members)


Rivet

Removal

&

Replacement


Connection

Repairs


Structure

Repairs/Replacement


New

Navigational

Lighting


New

Bridge

Lighting


Deck

Replacement

on

Span

7

Only


Repairs

to

Steel

Beams

(Piers

on

land)


Seismic

Retrofits

Where

Possible

DISCUSSION OF REPLACEMENT
ALTERNATIVES


All New Bridge Structure Components


Seismic Design to Current Standards


Weathering Steel (no painting required)


Type of Structure


Probably Multi
-
girder
Design


Architectural Enhancements

EXPECTED ISSUES/DISCUSSSION
POINTS


Age


Historical Nature of Bridge


Historical Nature of Area


Pedestrian & Bicyclists Accommodation (Roadway & Bridge Width)


Permits


Seismic Retrofits Or Design


Navigation Clearance (Horizontal)


Vertical Clearance on Bridge


Vertical Clearance Under the Bridge


Non
-
redundancy of Structure


Load Posting


Overall Bridge Length & Spans


Grades on Bridge


Sight Distance


Initial Project Cost


Life Cycle Costs



ISSUES/ATTENDEES


REHABILITATION

REPLACEMENT ON
EXISTING ALIGHMENT

REPLACEMENT ON
MODIFIED ALIGNMENT

REPLACEMENT ON
TOTALLY NEW
ALIGNMENT

Age

Historical Nature of Bridge

Historical Nature of Area

Ped. & Bicyclists Accommodation
(Roadway & Bridge Width

Permits

Seismic Retrofits or Design

Navigation Clearance (Horizontal)

Vertical Clearance on Bridge

Vertical Clearance Under the
Bridge

Non
-
redundancy of Structure

Load Posting

Overall Bridge Length & Spans

Grades on Bridge

Sight Distance

Initial Project Cost

Life Cycle Costs

NEXT STEPS


Aerial Survey


Mapping


Cores from Piers


Design Team Formulated


Full Bridge In
-
depth Inspection & Updated
Load Rating


Establishment of a Lake Champlain Advisory
Committee

COMMENTS

Send to:

Timothy R. Conway, P.E.


NYS Department of Transportation


328 State Street


Schenectady, NY 12305



OR



Email:

tconway@dot.state.ny.us