University Avenue Embankment Stabilization AcceptanceTHE CTTY OF
I~~~ E
Masterpiece Qn the Mississippi
TO: The Wonorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: University Avenue Embankment Stabilization Projection
Iowa DOT No. ER 2100 (636)--8R-31
CIP No. 3001080
DATE: January 15, 2008
Dubuque
AN America City
:~
2007
City Engineer Gus Psihoyos is recommending acceptance of the University Avenue
Embankment Stabilization Project, as completed by Connolly Construction, in the final
contract amount of $356,739.39, which is a 16.9% increase from the original contract.
Funds are available in the project budget to pay this additional expense.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
~1. l~ .~~
Michael C. Van Milligen
MCVM/jh
Attachment
cc: Barry Lindahl, City Attorney
Cindy Steinhauser, Assistant City Manager
Gus Psihoyas, City Engineer
THE CITY OF Dubuque
._.
DT TR ~ Ap•AmericaCity
V l.J
Masterpiece an tl~e Mississippi
2007
TO: Michael C. Van Milligen, City Mana
FROM: Gus Psihoyos, City Engineer -
SUBJECT: University Avenue Embankment Stabilization Project
Iowa DOT No. ER 2100 (636)--8R-31
CIP No. 3001080
DATE: January 14, 2008
INTRODUCTION
The enclosed resolution provides for the acceptance of the construction contract of the
University Avenue Embankment Stabilization Project.
BACKGROUND
The completed project site is located in the 3300 block of University Avenue. On May 22,
2004 heavy rains resulted in a flooding event that adversely affected approximately 500
feet of embankment on the north side of University Avenue. The existing creek located
along the bottom of the slope became flooded and caused the toe of the slope to erode,
which caused the embankment slope to fail. The failed slope was in a near vertical position
which had encroached within approximately four feet of the existing curb line at several
locations. Within the road right-of-way there are several existing underground and
overhead utilities in the immediate area of the embankment failure. These utilities are main
service lines for much of the west end of Dubuque.
Since the slope failure damages to University Avenue occurred on a minor arterial, as per
the Federal Functional Classification System map for Dubuque, repairs were not FEMA
eligible. Thus the City requested approval for Federal Emergency Repair (ER) Funding to
complete the permanent repair work. In January 2006, the City received notification that
the FHWA had approved the use of ER program funding for the University Avenue
Embankment Stabilization Project.
The University Avenue Embankment Stabilization Project provided for the relocation and
realignment of the existing stream away from the existing embankment toe of slope. A new
embankment was reconstructed to create a more stable 2.5:1 slope. The project also
provided for the placement of stabilization stone and riprap on the embankment slope
which will reinforce and prevent future erosion and scour. The project also required the
removal and replacement of a section of the existing curb and gutter, asphalt pavement
and guardrail along the top of the embankment supported roadway.
RIGHT-OF-WAY ACQUISITION
Due to the limited right-of-way adjacent to the project site and the need to relocate the
existing stream to accommodate the construction of the armored slope, the acquisition of
property from the abutting property owners was required. Permanent construction/
maintenance easements were acquired from two land owners.
DISCUSSION
The University Avenue Embankment Stabilization Project has been completed by Connolly
Construction, Inc. of Peosta, Iowa, in the final contract amount of $356,739.39, which is a
16.9% increase from the original contract in the amount of $305,082.40.
The following is a brief summary of the pre-existing deteriorated condition and justification
to support the additional project related costs that were required to restore the
embankment and roadway to an acceptable pre-damage condition.
The existing embankment was in a near vertical slope and did not allow the contractor to
properly bench the embankment without the potential risk of additional slope failure. Also,
the potential impact to the existing overhead and underground utilities which are located
along the top of the embankment also created an additional risk for slope failure. As a
result, construction methods were modified and the contractor was directed to place
additional stabilization stone as fill along the toe of the slope which reduced the potential
for disturbance to the existing embankment and utilities. This stabilization stone quantity
increase resulted in approximately $20,000 in additional costs to the project.
When originally calculating plan quantities for the curb and asphalt pavement items based
on the original July/August, 2004 survey data, the pavement repairs specified were
approximately 3 ft. x 240 ft. of removal and replacement. However, by the time
construction began in April 2007, the area that needed replacement grew to approximately
12.5 ft. x 310 ft. of pavement along the northerly curb line. As a result, additional
quantities for curb and asphalt pavement repairs were necessary to restore the pavement
due to the continuing failure of the unstable embankment. These quantity increases
resulted in approximately $18,500 of additional costs to the project.
Due to the steep embankment slope, the modification in construction methods and the
inability for the contractor to maintain access from the bottom side, the contractor was
required to work from the top side of the embankment. As a result of the top side
construction, this required the removal and replacement of additional guardrail and the
staging of construction equipment along the edge of the existing deteriorated pavement.
The additional guardrail work resulted in approximately $11,000 of additional costs to the
project.
RECOMMENDATION
I recommend that the City Council accept the improvements and authorize the payment of
the contract amount of $356,739.39 to Connolly Construction, Inc.
BUDGET IMPACT
BUDGET IMPACT
The project cost summary for the University Avenue Embankment Stabilization Project is
as follows:
Estimate
Construction Contract $ 415,000.00
Contingency 41,500.00
Right-of-Way Acquisition 15,360.00
Engineering Design 22,936.00
Project Administration 20,000.00
Construction Engineering & Inspection 20,000.00
Total Project Cost $ 534,796.00
Bid Award
$ 305,082.40
41,500.00
15,360.00
22,936.00
25,000.00
25,000.00
$ 434,878.40
Final
$ 356,739.39
15,852.00
24,452.75
15,366.20
37,484.50
$ 449,894.84
The project funding summary is as follows:
CIP No. Fund Description Amount
Federal Emergency Relief (ER) Funding $ 223,543.93
3001080 University Slope Failure 226,350.91
Total Project Funding $ 449,894.84
The City budgeted funds for the project (University Slope Failure CIP - 3001080) that was
used as the local match and for expenses that are not eligible for ER participation, such as
right-of-way acquisition, engineering design, project administration, construction
engineering and inspection services.
ACTION TO BE TAKEN
The City Council is requested to adopt the attached resolution to accept the improvements
and to authorize the payment of the contract amount of $356,739.39 to Connolly
Construction, Inc.
Prepared by Robert Schiesl, Assistant City Engineer
cc: Jenny Larson, Budget Director
Ken TeKippe, Finance Director
Ken Yanna, Assistant District Engineer, Iowa DOT
Roger Walton, District Staff Engineer, Iowa DOT
RESOLUTION NO. 16-08
ACCEPTING THE UNIVERSITY AVENUE STABILIZATION PROJECT (IOWA
DOT NO. ER 2100 (636)--8R~31) AND AUTHORIZING THE PAYMENT OF THE
CONTRACT AMOUNT TO THE CONTRACTOR
Whereas, the Public Improvement Contract for the University Avenue
Stabilization Project (Iowa DOT No. ER 2100 (636)--8R-31) (the Project) has been
completed and the City Engineer has examined the work and filed a certificate stating
that the Project has been completed according to the terms of the Public Improvement
Contract and that the City Engineer recommends that the Project be accepted; and
NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY
OF DUBUQUE, IOWA:
Section 1. The recommendation of the City Engineer is approved and the Project
is hereby accepted.
Section 2. The Finance Director is hereby directed to pay to the Contractor from
the University Slope Failure Capital Improvement Project and the Federal Emergency
Relief Funding for the contract amount of $356,739.39 less any retained percentage
provided for therein as provided in Iowa Code chapter 573, and to pay such retainage
only in accordance with the provisions of Iowa Code chapter 573.
Passed, approved and adopted this 22nd day of January, 2008.
Ric W. Jones, Mayor Pro-Tem
Attest:
Jeanne F. Schneider, CMC, City Clerk
CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF THE
UNIVERSITY AVENUE STABILIZATION PROJECT (IOWA DOT NO. ER 2100
(636)--8R-31)
The undersigned City Engineer of the City of Dubuque, Iowa, hereby certifies that
he has inspected the University Avenue Stabilization Project (Iowa DOT No. ER 2100
(636)--8R-31), that the Project has been performed in compliance with the terms of the
Public Improvement Contract, and that the total cost of the completed work is
$449,894.84.
Dated this 22nd day of January, 2008
Gus Psihoyos, City Engineer
Filed in the office of the City Clerk on the 22n day of January, 2008
Jeanne F. Schneider, CMC, City Clerk
City of Dubuque -Engineering Division
Final Payment Form
PAYMENT NO: COUNCIL FINAL
PROJECT NAME: UNNERSITY AVENUE EMBANKMENT STABILIZATION PROJECT
EMERGENCY REPAIR -EROSION
IOWA DOT PROJECT NO. ER-2100 (636)-8R-31
DATE: January 11, 2008
CONTRACTOR: CONNOLLY CONSTRUCTION, INC. CONTRACT AMOUNT: S305,082.40
NO. ITEM CODE CONTRACT ITEM DESCRIPTION UNIT CONTRACT
UNIT COST FINAL
QUANTITY AMOUNT EARNED
TO DATE
1 2101-0850001 CLEARING & GRUBBING ACRE $ 17,600.00 0.80 $ 14,080.00
2 2102-2710070 EXCAVATION, CLASS 10, ROADWAY & BORROW CY $ 6.44 5490 $ 35,355.60
3
4 2104-2713020
2105-8425015 EXCAVATION, CLASS 13, CHANNEL
TOPSOIL, STRIP, SALVAGE, AND SPREAD CY
CY $
$ 9.37
7.35 1700
1247 $
$ 15,929.00
9,165.45
5
6
7 2107-0875000
2210-0475290
2303-0021500 COMPACTION WITH MOISTURE AND DENSITY CONTROL
MACADAM STONE BASE
HOT MIX ASPHALT MIXTURE (300K ESAL) ,BASE COURSE, 1/2 IN CY
TON
TON $
$
$ 1.00
15.95
81.45 5490
534.71
94.10 $
$
$ 5,490.00
8,528.62
7,664.45
8
9
10
2303-0023500
2303-0246422
2303-0247028 HOT MIX ASPHALT MIXTURE (300K ESAL) ,INTERMEDIATE OR
SURFACE COURSE, 1/2 IN, NO SPECIAL FRICTION REO
ASPHALT BINDER, PG 64-22
ASPHALT BINDER, PG 70-28
TON
TON
TON
$
$
$
81.45
463.50
721.00
53.70
8.40
0.00
$
$
$
4,373.87
3,893.40
_
11
12
13
14 2307-0025003
2312-8260051
2401-6745650
2505-4008100 AGGREGATE, ROADWAY COVER, 318 IN.
GRANULAR SURFACING ON ROAD, CLASS A CRUSHED STONE
REMOVAL OF EXISTING STRUCTURES
REMOVAL OF GUARDRAIL TON
TON
LS
LF $
$
$
$ 17.85
15.00
4,700.00
5.60 225.57
196.26
1.0
312 $
$
$
$ 4,026.42
2,943.90
4,700.00
1,747.20
15
16
17 2505-4008200
2507-3250005
2507-6800061 INSTALLATION OF GUARDRAIL
ENGINEERING FABRIC
REVETMENT, CLASS E LF
SY
TON $
$
$ 24.00
1.50
18.60 312
7531
3800.97 $
$
$ 7,4gg,00
11,296.50
70,698.04
18 2507-8029000 EROSION STONE TON $ 18.60 3963.80 $ 73,726.68
19
20
21
22
23 2510-6745850
2512-1725256
2526-8285000
2528-8400048
2528-8445110 REMOVAL OF PAVEMENT
CURB AND GUTTER, PC, CONCRETE, 2.5 FT
CONSTRUCTION SURVEY
TEMPORARY BARRIER RAIL, CONCRETE
TRAFFIC CONTROL SY
LF
LS
LF
LS $
$
$
$
$ 5.60
21.10
4,130.00
15.70
4,060.00 443
312
1.0
398
1.0 $
$
$
$
$ 2,480.80
6,583.20
4,130.00
6,248.60
4,060.00
24
25 2528-8445112
2533-4980005 FLAGGERS
MOBILIZATION DAY
LS $
$ 255.00
7,150.00 17
1.0 $
$ 4,335.00
7,150.00
26 2601-2634100 MULCHING ACRE $ 350.00 1.14 $ 399.00
27
28 2601-2636044
2602-0000020 SEEDING AND FERTILIZING (URBAN)
SILT FENCE ACRE
LF $
$ 1,570.00
2.40 0.24
795 $
$ 376.80
1,908.00
29 2602-0000060 REMOVAL OF SILT FENCE LF $ 1.05 1353 $ 1,420.65
30 2602-0000090 CLEAN OUT OF SILT FENCE LF $ 2.00 0.00 $
TOTAL AMOUNT EARNED TO DATE -BASE BID: S 320,199.18
CF#ANGE ORDER(S) -EXTRA VIIORK ITEMS
31
32 2507-6800061
2505-4008100 7001 -REVETMENT CLASS E (ITEM 0170 INCREASE)
7002 -REMOVAL OF GUARDRAIL (ITEM 0140 INCREASE) TON
LF $
$ 18.60
5.60 1062.0
277.0 $
$ 19,753.20
1
551
20
33
34
35 2505-4008200
2599-9999017
2599-9999010 7003 -INSTALLATION OF GUARDRAIL (ITEM 0150 INCREASE)
7004 -REMOVAL & INSTALLATION OF FIELD FENCE (DELETE 8002)
6001 -REMOVABLE BLACK TAPE LF
STA
LS $ 24.00
$ (1,609.53)
$ 700.00 202.0
0.84
1.0 $
$
$ ,
.
4,848.00
(1,352.00)
700.00
36
37
38 2599-9999017
2601-2636043
2102-2710080 8002 -REMOVAL & INSTALLATION OF FIELD FENCE
8003 -SEEDING & FERTILIZING (RURAL)
8004 -EXCAVATION, CL 10 UNSUITABLE STA
ACRE
CY $
$
$ 1,609.53
1,200.00
12.88 0.84
0.90
49.5 $
$
$ 1,352.00
1,080.00
637.56
39
40
2599-9999010
2599-9999017 8005 -REMOVAL OF EXCESS EMBANKMENT STOCKPILE
MATERIAL
8002 -REMOVAL & INSTALLATION OF FIELD FENCE
LS
LS
$
$
6,618.25
1,352.00
1.0
1.0
$
$
6,618.25
1,352.00
TOTAL AMOUNT EARNED TO DATE • CHANGE ORDERS: S 36,540.21
TOTAL AMOUNT EARNED TO DATE: S 356,739.39
TOTAL DUE CONTRACTOR: S 356,739.39
RIGHT-OF-WAY ACQUISITION: S 15,852.00
ENGINEERING DESIGN: S 24,452.75
PROJECT ADMINISTRATION: S 15,366.20
CONSTRUCTION ENGINEERING & INSPECTION: S 37,484.50
TOTAL IMPROVEMENT COST: S 449,894.84
CERTIFICATE OF THE CITY MANAGER:
improvement.
APPROVED
Michael Van ' igen, City MM~ager,~
City of u e, Iowa
APPROVED:
Gus Psihoyos, City Engineer
City of Dubuque, Iowa
CERTIFICATE OF THE CONTRACTOR:
The undersigned, CONNOLLY CONSTRUCTION, INC. conVactor for the above improvement, does hereby accept the
accept the above "Total Due ConVactor", as full settlement for all claims for said improvement.
CONTRACTOR:
BY: CONNOLLY CONSTRUCTIO ,INC.
TITLE: ~ •: ~~
DATE: _ /' /~ ~~ (]~