Item 8A - Dutton Isl. Ped PathCITY OF ATLANTIC BEACH
CITY COMMISSION MEETING
STAFF REPORT
AC I~N DA ITEM # 81\
S~JlTI~MI3ER 22,2014
AGENDA ITEM: Dutton Isl and Pedestrian Path -Bri efing on Desig n Alternatives
SUBMITTED BY: Douglas E. Layton, P.E ., Public Works Director
Yu ( t CYf) ~-
DATE: September 8, 2014
STRATEGIC PLAN LINK: Marsh Master Plan
BACKGROUND : The Marsh Mast er Plan envisioned walking trails lin king the mainland
with the Marsh Islands. The proj ect wa s origina lly plann e d as a conn ec t ion between gth
St r eet along the JEA Easement to Levy Road an d Levy Road to Dutton Island Road, and
along Dutton Island Road to the Dutton Island Pre se rve.
The JEA easement route met with significant neighborhood opposition. An alternative
route has bee n considered to connect th e mainland to Dutton Island Pre se rve . The
planning pha se {approx 30%) of the project d es ign is complete. The options co nsidered
for the alternate route are:
1. A se parated boardwalk t o the north of Dutton Is land . The initial cos t estimate
for this alternative wa s $1.6M. Th er e were also concern s that the boardwalk would
i nterfere with marsh vi ews from Dutton Island Road and wou ld have high er
maintenan ce costs than t he other options. Thi s alternative ha s be en d iscarded du e
to higher cost and vi sual concern s.
2. An 8ft. wide pedestrian path contiguou s to the existing Dutton Island Road
pavement. See attach ed graphic . The cos t estimate for this option is $408,000. Se e
attached estimate.
3. An 8ft. wide pedestrian path se parated from the existing Dutton Island Road
paveme nt by a 4ft. divider swale. See attached graphic. Separation of th e ex i sting
road and the pede strian path would enhance the wall<ing experi ence by se parating
the walker s from the roadway. It would also minimize cars trying to use the
pedestrian path as a secon d lane . The cos t estimate for this option is $450,000. See
attached estimate.
RECOMMENDATION: That th e d es i gn continue utilizing option 3
AGENDA ll'I':M #SA
St:P1'EM8ER 22,2014
BUDGET: The design for this project was authorized previously. As it is anticipated that
construction of the project wi ll occur in FY 2016, there are no funds allocated in the FY
2015 budget. No authorization is requested at this time. Construction will be
considered under the FY 2016 budget. It is anticipated the FIND grants will fund 50% of
the construction costs.
ATTACHMENTS: Graphics and cost estimates for options 2 & 3
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EXIST PAVED ROADWAY
66' RIW I~
I ~
I
L'll WETLAND
FILL I WETLAND IMPACT
5"
TYPICAL SECTION
NTS
....
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66. R/VI "' ~--------------~~~----------------~~
VA RIES VARIES
12' Ef 2'
VARIES
TYPICAL SECTION
NTS
Dutton Island Road Path ·Alternate with Path Adjacent to Roadway
Preliminary Con struction Estimate
Item
No.
1.)
2.)
3.)
4.)
5 .)
6 .)
7.)
8 .)
9 .)
10.)
11.)
12.)
1.)
2 .)
J ,)
Qty
20,600
0.100
1,900
396
572
2
20
1
1,150
0.100
645
0.100
2 .743
2,743
Units
SF
AC
LF
CY
SY
EA
LF
EA
SF
LS
LS
LS
AC
CY
AC
SY
SY
LS
Item Description
ASPHALT PATH ·INCL UDES MOB ILIZATION, SITE WORt< & PAVING
CLEARING & GRUBBIN G IN W ETLAND AREA
PAVE MENT STRIPIN G
REGULAR EXCAVATION & FILL
SOD
REMOVABLE BO LLARDS
6' CHAIN LINK FENCE
6' WIDE 6' CLF GATE
G' WOODEN BOARDWALK AND 20'x20' PLATFORM
20'x20' ROOF STRU CTURE
FISHING PI ER AM ENITI ES
20% CO NTING ENCY
OPTION 1: ONSITE WETLAND CREATION
a.) PLANTING I MONIT ORING
b .) EARTHWORK
c.) 20% CO NTIN GE NCY
OP TION 2: MITIGATION BANK
PUR CHASE CREDITS
ADDITIVE ALTERNATE NO. 1
MILLING EXISTING ASPHALT PAVEMENT (1 ")
ASPHALTIC CONCRE TE TYPE S-1 (1'')
20% CO NTIN GENCY
1. THIS IS A PRE-ENGINEER ING COST ESTIMATE AND SI-IOUL D NOT BE CONSTRUED AS ACTUA L COSTS .
HANSON PROFESSIONAL SERVICES ASS UMES NO LIABILI TY FOR VARIATIONS BETWEEN TH IS ESTI MATE
AND ACTUAL COSTS.
PATH ADJACE NT Puuon l slnncl Rood Path Do th ALTa Prollm Cost Est Rov 09-03-201•Lxl sx
AGENDA ITEM liSA
SEPTEMBE R 22 ,2014
9/4/2014
Un it Price Total
$11 .24 $231 ,590
$13,150 .00 $1,320
$1 .00 $1,900
$12.00 $4,750
$3.27 $1,870
$500.00 $1,000
$28 .50 $570
$500.00 $500
$61.66 $70 ,910
$10,000.00 $10,000
$2.000.00 $2,000
$65,282
SUBTOTAL : $39 1,692
$8,000 .00 $800
$20 .00 $12,9 10
$l.ill
SUBTOTAL: $16,452
TOTAL OPTION 1: $408,14 4
$400,000.00 $40.000
TOTAL OPTION 2: $43 1,692
$15.66 $42.950
$12.02 $32,970
~
TOTAL ADD Al T NO.1: $91,104 I
~I 66' R/VI I~
~I I~ 0:
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WI wETLAND
FILL I WETLAND IMPACT
9'
TYPICAL SECTION
NTS
IU ~
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0::
~FJ.,.-,~,.J 3 -S~,.:: £6~o~~#-I
9/S/;l./
~----------------~6~6~'~R/~V~~------------------~
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VARIES VARIES
IZ' 4' if Z'
VARIES
EXIST PAVED ROADWAY
PROPOSED ASPHALT PATH
TYPICAL SECTION
NTS
Dutton Island Road Path -Alternate with 4-Foot Separation
Preliminary Cons truction Estim ate
Item
No.
1.)
2.)
3.)
4.)
5.)
6.)
7.)
8 .)
9.)
10.)
11.)
12.)
1 ,)
2.)
3.)
Qty
20,520
0.311
0
809
1,7 10
2
20
1,126
1
0.311
2,007
0.311
2,743
2.743
Units
SF
AC
LF
CY
SY
EA
LF
EA
SF
LS
LS
LS
AC
CY
AC
SY
SY
LS
Item De scription
ASPHALT PAT H -IN CLUDES MOB ILIZATIO N, SITE WORK & PAVIN G
CLEARING & GRUBBING IN WETLAND AREA
PAVEMEN T STRI PING
REGULAR EXCAVAT ION & FILL
SOD
REMOVABLE BOLLARD$
6' CHAI N LINK FENCE
6' W IDE 6' CLF GATE
6' WOODEN BOARDW ALI< AND 20'x20' PLATFORM
20'x20' ROOF STRUCTURE
FISHI NG PIER AMENI TIES
20% CONTIN GENCY
OPT ION 1: ON SITE WETLAND CREATION
a.) PLAN TING I MON ITORI NG
b.) EARTHW ORI<
c.) 20% CONTINGENCY
OPTION 2: MITIGATION BANK
PURCHASE CREDITS
ADDITIVE ALTERNATE NO.1
MILLIN G EXISTING ASPHALT PAVE MENT (1 ")
ASPHALTIC CONCRETE TYPE S-1 (1")
20% CO NTINGENCY
1. TH IS IS A PRE-ENGINEERING COST ESTIMATE AND SHOU LD NOT BE CONSTRUED AS ACTUAL COSTS.
HANSON PROFESSIONAL SERVICES ASSUMES NO LI AB ILITY FOR VARIATIONS BETWEEN THIS ESTIMATE
AND AC TUAL COSTS.
PA TH W SEPAR ATION Du tton Island Rood Path Both ALTs Preli m Cos l Esl Rev 09·03·20 14,xlsx
AGENDA IT EM liSA
SEPTEMUER 22,20 14
9/4/2014
Unit Price Total
$11.24 $23 0,690
$13,150.00 $4,090
$1.00 so
$12.00 $9,710
$3.27 $5,590
$500.00 $1,000
$28.50 $570
$500.00 $500
$61 .66 $69,430
$10,000.00 $10,000
$2,000.00 $2,000
$66,716
SUBTOTAL: $400,296
$8,000.00 $2.490
$20.00 $40,140
~
SUBTOTAL: $51,156
TOTAL OPTION 1 : $451.452
$400.000.00 $124,400
T OTAL OPTION 2: $524,696
$15.66 $42.950
$12 .02 $32.970
lli..1.!l.1-
TOTAL ADD ALT N0.1 : ( $91,104