Tables - pleasantbay.orgpleasantbay.org/wp-content/uploads/MuddyCreekWetlandRestoration_Fi… ·...

F:\P2011\0202\A10\Deliverables\Compiled Work-in-Progress Technical Memorandum20110902\MuddyCreekCulvertTM1_20110901.docx

Tables

TABLE 46Comparative Constraints Analysis Summary Table for Culvert Replacement Alternatives

Muddy Creek Wetland RestorationFebruary 2012

Culvert ReplacementAlternative Configuration

VegetativeCommunity

Impacts/Benefits

ShellfishCommunity

Impacts/Benefits

FisheriesMigration/ HabitatImpacts/Benefits

ConstructionCosts

Life Expectancy/Maintenance Costs

ConstructionFootprint Impacts

onWetlands

ConstructionTimeline and

Traffic Bypass/Detouring

Water QualityImpacts/Benefits

PermittingRequirements

Wildlife/RareSpecies

Impacts/Benefits

Canoe/KayakPassage and

SafetyAesthetics

TOTALSCORE

Pre-Cast Concrete BoxSingle Cell

24’ clear span box channelSplit for TransportInstallation by jacking

Score = 2Greaterimpactsbecause ofjacking pit.

Score = 2Temporaryshellfishingimpacts wherejacking pit islocated.

Score = 1Fish migrationseverely impactedduring constructionbecause of need topump water to avoiddeep trenchexcavation for bypasschannel

Score = 3Second highestconstruction cost($3,775,000)

Score = 375 Year LifeExpectancyIntermittentmaintenance will berequired to repair theinvert exposed toflow

Score = 1Greatest impactduring constructiondue to the jacking pitand need to supportthe reaction wall andconstruct access roadApproximately 7,900sq. ft. of wetland areadisturbance

Score = 5Shortestconstructionperiod (3-5months)Maintains trafficthrough the sitefor the durationof construction

Score = 5Culvert willimprove waterqualityconsistentwith otherscenarios.

Score = 2Jacking will requiregreatestdisturbance towetlands.Finished productwill have the leastbenefits to wildlifeand humans withsmaller openingand concrete floor.

Score = 2Finished productwill have the leastbenefits towildlife withsmaller openingand concretefloor.

Score = 2Can bedesigned tooffer safepassage butopening willappear smallerthan otheralternativesduring hightide.

Score = 2Square boxculvert willlower aesthetics.Formliners canbe used toimproveaesthetics 30

Single Span Pre-CastConcrete Three Sided Bridge

24’ clear span box channel

Score = 3Less impactsthan jacking.


Score = 3Temporary bypass willallow continued fishpassage throughconstruction.Natural streambottom throughculvert.

Score = 4Second lowestconstruction cost($3,540,000)

Score = 575 Year LifeExpectancyNegligible annualmaintenance cost

Score = 3Moderate impactduring constructionApproximately 5,320sq. ft. of wetland areaimpact

Score = 3Constructiontime is shorterthan concretedeck bridgealternatives (6-9months)Shortest detourduration due toshortconstructiontime

Score = 5Culvert willimprove waterqualityconsistentwith otherscenarios.

Score = 4Approach reducespotentialconstructionimpacts whileproviding habitatand water qualitybenefits.

Score = 3Finished productwill have naturalstream bottomand higheropening becauseof arch.

Score = 3Higheropeningbecause ofarch.

Score = 4Arch will makeculvert appearless as a pipe.Formliners canbe used toimproveaesthetics 43

Pre-Cast Concrete DeckBeam Bridge on Cast-in-Place Abutments

24’ clear span box channel



Score = 4Temporary bypass willallow continued fishpassage throughconstruction.Natural streambottom throughculvert.Larger opening mayencourage improvedhabitat and migration.

Score = 1Highestconstruction cost($4,040,000)

Score = 475 Year LifeExpectancyMinimal maintenancecosts when comparedto steel stringerbridgesPavementmaintenance /replacement is abridge itemPotential damage tobridge rails

Score = 2Second largest impactduring constructionApproximately 6,290sq. ft. of wetland areaimpact

Score = 1Longestconstructiontime ofalternatives (10-12 months)Longest detourduration due toabutmentconstruction

Score = 5Opening willimprove waterqualityconsistentwith otherscenarios.

Score = 3Approach hasmore significantconstructionimpacts withcomparable habitatand water qualitybenefits.

Score = 3Finished productwill have naturalstream bottomand large openingthrough theembankment.

Score = 4Largeropeningbecause ofbridge.

Score = 3Size and heightof structure mayseem intrusiveandoverpowering inproposed setting

36

Single Span Adjacent Pre-Cast Concrete Deck BeamBridge Supported on Cast-in-Place Concrete Abutments

94’ deck span overarmored trapezoidalchannel


Score = 4Least footprintwithin LandUnder Ocean

Score = 5Temporary bypass willallow continued fishpassage throughconstruction.Greater ability to formvariability/complexitythrough naturalstream bottomchannel.Larger opening mayencourage improvedhabitat and migration.

Score = 5Lowestconstruction cost($3,310,000)

Score = 475 Year LifeExpectancyMinimal maintenancecosts when comparedto steel stringerbridgesPavementmaintenance /replacement is abridge itemPotential damage tobridge rails

Score = 4Lowest impact duringconstructionApproximately 4.,320sq. ft. of wetland areaimpact

Score = 2Longerconstructiontime three sidedbridge (8-10months)

Score = 5Opening willimprove waterqualityconsistentwith otherscenarios.

Score = 5Approach haslowestconstructionimpacts providinglarger opening forwildlife andrecreationalpassage.

Score = 5Finished productwill have naturalstream bottom,the largestopening throughthe embankmentand will allow forwildlifemigration.

Score = 5Highestopeningresulting fromlarge bridgespan andtrapezoidalchannelconfiguration.Lower tidalvelocitiescompared to24-ft. widechannel.

Score = 4Larger openingcreates lessvisual impactand greater sightlines fromdownstreambeach area toupstreamestuary.

51

F:\P2011\0202\A10\Deliverables\Wetland Work-in-Progress Memo 20110708\mkf_MuddyCreekTM1_20110715.doc

Attachment A

Topographic Wetland Resource Area Mapping

SHEET LAYOUT AND NOTES PLAN

1" = 50'

NAD83NAVD88

SIT

EC

S-1

01

20110202.A10FEB. 2012CAPE COD CONSERVATION DISTRICT

MUDDY CREEK WETLAND RESTORATION

HARWICH/CHATHAM MASSACHUSETTS

SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

LP-1

01,

Plo

tted:

Mon

, Feb

27,

201

2 - 1

:08

PM

U

ser:

nwib

erg

MS

VIEW

:LA

YER

STA

TE:

DATENo. DESCRIPTION DESIGNER REVIEWER

Plo

tter:

NO

NE

CTB

File

: ----

317 IRON HORSE WAY, SUITE 204PROVIDENCE, RI 02908401.861.3070www.fando.com

WETLAND RESOURCE AREA PLAN NO. 1

1" = 50'

NAD83NAVD88

SIT

EC

S-1

01




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-101

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

8 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----


CULVERT ELEVATION SUMMARY TABLE - MUDDY CREEK/ROUTE 28ALL ELEVATIONS NAVD88

ROOF ELEV. INVERT ELEV. ROOF ELEV. INVERT ELEV.

Roof elevations at each culvert end were measured at both corners. Elevations shown above are averaged values.

0.99

0.82

0.55

0.68SOUTHCULVERT

-2.35 -2.92

MUDDY CREEK (LAND SIDE) PLEASANT BAY (OCEAN SIDE)

NORTHCULVERT

-2.63 -3.21

NOTES:


1" = 50'

NAD83NAVD88

SIT

EC

S-1

02




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-102

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

8 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----



1" = 50'

NAD83NAVD88

SIT

EC

S-1

03




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-103

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

8 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----



1" = 50'

NAD83NAVD88

SIT

EC

S-1

01




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-104

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

9 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----



1" = 50'

NAD83NAVD88

SIT

EC

S-1

01




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-105

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

9 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----



1" = 50'

NAD83NAVD88

SIT

EC

S-1

01




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-106

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

9 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----



1" = 50'

NAD83NAVD88

SIT

EC

S-1

01




SEALSEAL SCALE:

DATUM:

VERT.:HORZ.:

VERT.:HORZ.:

PROJ. No.:DATE:

File

Pat

h: J

:\DW

G\P

2011

\020

2\A

10\C

ivil\

Pla

n\20

1102

02A

10_E

XC

01.d

wg,

Lay

out:

RC

-107

, P

lotte

d: M

on, F

eb 2

7, 2

012

- 1:0

9 P

M

Use

r: nw

iber

g

MS

VIEW

:LA

YER

STA

TE:


Plo

tter:

NO

NE

CTB

File

: ----


Date post:	15-Oct-2020
Category:	Documents
Upload:	others
View:	0 times
Download:	0 times

Tables - pleasantbay.orgpleasantbay.org/wp-content/uploads/MuddyCreekWetlandRestoration_Fi… ·...

Documents