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Home My WebLink AboutAGREEMENT MISC - 8008 POUDRE TRAIL AT MULBERRY & LEMAYADDENDUM NO. 2 SPECIFICATIONS AND CONTRACT DOCUMENTS Description of BID 8008: Poudre Trail at Mulberry & Lemay OPENING DATE: 3:00 PM (Our Clock) October 15, 2014 To all prospective bidders under the specifications and contract documents described above, the following changes/additions are hereby made and detailed in the following sections of this addendum: Exhibit 1 – Revised Bid Schedule (also attached as a separate Microsoft Excel file) Exhibit 2 – Project Clarifications Exhibit 3 – Revised Specifications Exhibit 4 – Floodplain Use Permit Exhibit 5 – Revised Drawings Please contact John Stephen, CPPO, LEED AP, Senior Buyer at (970) 221-6777 with any questions regarding this addendum. RECEIPT OF THIS ADDENDUM MUST BE ACKNOWLEDGED BY A WRITTEN STATEMENT ENCLOSED WITH THE BID/QUOTE STATING THAT THIS ADDENDUM HAS BEEN RECEIVED. Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 970.221.6707 fcgov.com/purchasing Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 1 of 17 EXHIBIT 1 – REVISED BID SCHEDULE 201 Clearing and Grubbing LS 1 $ - 202 Removal of Tree EA 9 $ - 202 Removal of Manhole EA 1 $ - 202 Removal of Pipe LF 37 $ - 202 Removal of End Section EA 1 $ - 202 Removal of Concrete SY 311 $ - 202 Removal of Asphalt Mat SY 510 $ - 202 Removal of Riprap CY 67 $ - 202 Removal of Concrete Bridge Deck SY 183 $ - 203 Unclassified Excavation CY 157 $ - 203 Embankment CY 476 $ - 206 Structure Excavation CY 449 $ - 206 Structure Backfill (Class I) CY 280 $ - 207 Topsoil (Remove, Stockpile, Redistribute) CY 401 $ - 208 Erosion Log (12 Inch) LF 1121 $ - 208 Concrete Washout Structure EA 1 $ - 208 Vehicle Tracking Pad EA 2 $ - 208 Erosion Control Supervisor HR 40 $ - 210 Reset Structure (Existing 165' Bridge - at Lemay) EA 1 $ - 210 Unload Structure (Existing 165' Bridge - at alt. site) EA 1 $ - 210 Unload Structure (Existing Steel Railing - at alt. site) EA 1 $ - 211 Dewatering LS 1 $ - 212 Tree Retention and Protection LS 1 $ - 212 Seeding (Native) AC 0.6 $ - 213 Mulching (Weed Free Hay) AC 0.6 $ - 304 Aggregate Base Course (Class 5) CY 58 $ - ITEMCOST NO. ITEM DESCRIPTION UNITQUANTITY UNIT COST Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 2 of 17 503 Drilled Caisson (24 inch) LF 250 $ - 503 Drilled Caisson (54 inch) LF 25 $ - 506 Riprap (12-Inch) CY 184 $ - 506 Repurposed Riprap (Pipe Outfall) CY 5 $ - 506 Repurposed Riprap (Native Streambed Riprap) LS 1 $ - 514 Pedestrian Railing (Steel) LF 200 $ - 601 Concrete Class D CY 229 $ - 601 Concrete Class B (Headwall) LS 1 $ - 602 Reinforcing Steel LB 11562 $ - 602 Reinforcing Steel (Epoxy Coated) LB 14100 $ - 603 24 Inch Reinforced Concrete Pipe LF 55 $ - 603 24 Inch Reinforced Concrete End Section EA 1 $ - 603 48 Inch Reinforced Concrete Pipe LF 24 $ - 603 48 Inch Reinforced Concrete End Section EA 1 $ - 603 12 Inch Plastic Pipe LF 26 $ - 604 Manhole Slab Base (5 Foot) EA 1 $ - 608 Concrete Sidewalk (6 Inch) SY 519 $ - 608 Concrete Bikeway (5 Inch) SY 791 $ - 608 Concrete Bikeway (Special) SY 167 $ - 625 Construction Surveying LS 1 $ - 621 Structure Temporary Access Road LS 1 $ - 626 Mobilization LS 1 $ - 628 Bridge Girder and Deck Unit - 100' EA 1 $ - 630 Traffic Control LS 1 $ - 630 Flagging HR 80 $ - 630 Traffic Control Inspections DAY 30 $ - 630 Traffic Control Management - Working Days DAY 90 $ - 700 F/A Minor Contract Revisions FA 1 $80,000.00 $ 80,000.00 700 F/A Erosion Control FA 1 $10,000.00 $ 10,000.00 IN WORDS: TOTAL BASE BID Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 3 of 17 EXHIBIT 2 – PROJECT CLARIFICATIONS I. Project Clarifications: A. According to pre-bid handout, there will not be any extended warranty for this project (1-2 year). Is this the case? Yes, since there are federal dollars associated with this project, there is not an extended warranty after the project’s final acceptance. Any corrective measures necessary will need to be made prior to final acceptance. B. Regarding “Poudre River Trail” details (Sheet 10-11), what is the specification for 12” reconditioned subgrade? A project special has been developed for 12” reconditioned subgrade. Please see the attached. C. Regarding “Poudre River Reinforced Trail” detail, is #4 rebar epoxy coated? All rebar associated with the “Poudre River Reinforced Trail” detail on page 10 shall be epoxy coated per Section 709 in the Colorado Department of Transportation Standard Specifications for Road and Bridge Construction. Reinforcing steel will not be measured but shall be included in the cost of the work. Applicable line item for this detail is the following: 608 Concrete Bikeway (Special) SY D. Regarding “Poudre River Trail STA 9+18.34 – 1+45” measurement, will structural backfill under sidewalk be paid under this item? Structural Backfill (Class 1) will be measured separately and paid for under the following item: 206 Structural Backfill (Class 1) CY E. Regarding “Poudre River Trail South Bank Lemay Ave Connection” detail (Sheet 11), call out refers to trail as 5” thick, yet, NOTES: 8. States this item is paid under 608 Concrete Sidewalk (6 inch) The “Poudre River Trail South Bank Lemay Ave Connection” is to be 6” concrete sidewalk, gray in color. Sheet number 11 has been revised to eliminate previous discrepancy. This section of trail is paid under the following: 608 Concrete Sidewalk (6 inch) F. What is the limit of clearing and grubbing? Limits of Construction/Disturbance can be found on sheet 20. G. Are wetlands anticipated to conflict with trail construction (Sheet 14)? Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 4 of 17 Yes. As shown on Sheet 14, wetlands will be impacted as part of this project. All wetlands have been delineated. The area of disturbance as part of this project is under 1/10th of an acre so no wetland mitigation is required. The City has obtained a Nationwide No. 14 Permit for the work that impacts the existing wetlands. The City recommends the Contractor stake the limits of existing wetlands in the field prior to beginning construction to minimize impacts to the wetlands. This work shall be incidental to the construction surveying necessary for the project. H. Is the intent for ALL topsoil placement to be from strip and stockpiled, on-site, topsoil? Yes. Please reference the project’s Revision of Section 207, Topsoil for additional information. Imported topsoil may be required if the Contractor fails to meet the specifications as described in the Revision of Section 207. If this is the case, imported topsoil will not be paid for separately but will be the responsibility of the Contractor. I. Will storage of stripped topsoil within construction limits be acceptable according to floodway requirements? Yes. Topsoil can be stored within the construction limits that overlap the floodplain, but it may not be stored within the floodway. Please reference the plans for limits of both the floodway and the floodplain. J. How is the owner contemplating on delivery of the bridges as far delivery route and methodology? Is the owner contemplating backing the bridge down the 12’access/crane ramp? Per the Revision of Section 210 – Reset Structures specification, the prefabricated pedestrian bridge will be delivered to the site by others under a separate contract. The delivery site will be the bottom of the truck ramp near the south bank of the Poudre River, just east of the Lemay Avenue Bridge. Please reference this project special for additional information. The Contractor is responsible to coordinate the delivery of the prefabricated pedestrian bridge. K. With regard to the 12’ access/crane ramp, there’s a lot of vegetation that will have to be remove to build the access road, will that be paid under clearing and grubbing? In addition, will the owner representative mark all the trees that needs to be remove? Per the detail shown on Sheet 20, the Truck Ramp & Crane Runway is a temporary access road constructed on existing subgrade. The limits and location shown on the plans are approximate with the final configuration of the road to be approved by the City prior to construction. Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 5 of 17 Any vegetation, including trees up to 6” in diameter, necessary to be removed will be paid for under the Clearing and grubbing line item. Trees larger than 6” in diameter to be removed will be paid under the Removal of Tree line item. L. In case of high flow, who will be responsible for the access ramp/crane runway if the material wash away or erode away? Is type 7 barrier be allow to protect the class 6 from eroding and washing away on the West Side of the access/Crane Ramp? Per the Revision of Section 621 – Structure Temporary Access Road project specification; the Contractor shall maintain the temporary access road throughout the duration of the project. The Contractor shall not construct the temporary access road during the flood season (April 15th through October 1st). M. Regarding delivery of bridge can we close down Lemay Avenue? Temporary lane drops along Lemay Avenue may occur between the hours of 8:30 am and 3:30 pm or as approved by the City. The City recognizes that a brief closure of lanes may be necessary to facilitate bridge delivery. The City will not approve a full closure of Lemay Avenue during the day but would entertain a night time closure of Lemay if necessary. All traffic control necessary to construct this project will need to be approved by the City of Fort Collins prior to implementation. The Contractor shall be aware of and sensitive to impacts to business access if lane closures are requested. N. With regard to delivery of the existing bridge, will the bridge be deliver to a certain designated area or will the bridge be deliver to the desire staging area at the contractor request? Per the Revision of Section 210 – Reset Structures specification, the delivery site will be the bottom of the truck ramp near the south bank of the Poudre River, just east of the Lemay Avenue Bridge. O. After visiting the site and talking with the crane operator, in order to set the bridges the crane staging areas needs to be a minimum of 40’ x40’, the plans shows a 12’ runway? That seems insufficient for the size and length of the bridge. Is their flexibility to enlarge the ramp and runway? Per the Revision of Section 210 – Reset Structures specification, the Contractor is to submit the actual location and dimensions of the access road to the City for approval prior to construction. The access road shall be removed and the site restored to its original state upon completion of its use. Please reference the project special for additional information. P. After speaking with a crane expert, he indicated that access for both north and south side are required to set the 100’ bridge and 165’ Bridge otherwise the bridge splicing will have to be done in the air, given the access for the site that Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 6 of 17 doesn’t’ seem cost effective and constructible? In addition, there is a lot of vegetation in the way outside of the removal limit. Based on the site visit, some need to be remove to provide clearance to set the bridges. Who is responsible for removing those vegetation? The project site can be accessed from both the north and south sides. Please reference appropriate access exhibits in the contract documents for additional information. The Contractor is responsible for removing necessary vegetation as outlined within the bid documents. Q. Can we access off of Lemay Avenue on NE Corner of the Poudre River or SW Corner of the Car Wash? No. The north side of the site can only be accessed through existing easements as shown on the access exhibit included in the contract documents. R. What’s the approximate weight of the 165’ bridge with the concrete deck? Approximate weight of the assembled structure per the shop drawings is 78,000 lbs per span. Please reference the shop drawings in the bid documents for additional information. Contractor is responsible for verification of weight as this information is provided as “For Info Only”. S. After speaking with the Bridge Representative and the Crane Expect, they indicated that relocating the bridge with the concrete deck will jeopardize the concrete and structure integrity of the bridge? Who will be liable for the bridge? In additional, given the weight and size of the bridge plus the concrete deck, it’s almost not possible to lift and set the bridge. Once the prefabricated pedestrian bridge is delivered to the site, the City and Contractor will inspect the structure noting its delivered condition as well as agreeing to any additional work needed. Upon completion of this initial inspection, the Contractor will be responsible for the handling and placing of the prefabricated pedestrian bridge. If damage occurs from this point forward, it is the Contractor’s responsibility to perform repairs at his cost. Please reference Revision of Section 210 – Reset Structures for additional information. T. After speaking with the bridge rep, he indicated that demoing the concrete deck will possibly damage the integrity of the bridge? Is the owner open to buying new bridges instead of reusing the existing bridge. It seem more cost effective and there a lot less liability on the owner and contractor if new bridges are bought? The intent of this project is to reuse the existing 165’ pedestrian bridge as opposed to purchasing a new 165’ pedestrian bridge. Contractor should bid this item per plan. Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 7 of 17 U. The plans shows the bridge crossing over the middle island in the Poudre River, there doesn’t seem be enough clearance from the bottom of the bridge with the existing vegetation from a visual standpoint, if that’s the case, who is responsible for removing the vegetation? Any additional vegetation to be removed other than what is shown on the plans shall be discussed with the City prior to any removals. If it is determined additional removals are necessary, a cost to perform the removals will be negotiated. V. Are we allowed to track machine in the Poudre River or will temporary crossing be required? The intent of the Truck Ramp & Crane Runway access road is to provide a temporary roadway to access areas necessary to construct the planned improvements. W. On Sheet 11, the caisson data chart shows all caisson to be approximately 25’, Based on the detail dimension for the 54” Caisson, the total length shown is 27.5’, but it also show 1.5’ to 4’ Dimension the bid schedule shows it to be 25’, should we bid the Bid Schedule Quantity? Yes, please provide a price for the quantity shown in the Bid Schedule. X. Is steel casing required for the caissons? Per Sheet 31, the Contractor should be prepared to provide temporary steel casing in order to maintain a stable open excavation. If steel casing is required, along with de-watering, this will not be paid for separately but will be incidental to the cost of the caissons. Y. With regard to concrete material, most concrete vendor sent out notice that price for concrete will increase after January 1 but are uncertain on the price increase? Is there any flexibility for reimbursement for price escalation? No. Any anticipated increase in cost of materials will need to be considered by the Contractor prior to bid submittal. II. Pre-Bid Clarifications Resulting in Changes to the Bid Documents: A. Can you provide clarification on Contractor responsibility with respect to receiving and placing the prefabricated pedestrian bridge? Once the prefabricated pedestrian bridge is delivered to the site, the City and Contractor will inspect the structure noting its delivered condition as well as agreeing to any additional work needed. Upon completion of this initial inspection, the Contractor will be responsible for the handling and placing of the prefabricated pedestrian bridge. If damage occurs from this point forward, it is the Contractor’s responsibility to perform repairs at his cost. Revision of Section 210 – Reset Structures has been updated to include the above. Please reference this specification for additional information. Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 8 of 17 B. Will a bridge erection plan stamped by an engineer be required? Yes. Please reference Section 509 – Steel Structures of the Colorado Department of Transportation Standard Specifications for Road and Bridge Construction for additional information. The bridge erection plan will not be paid for but will be considered incidental to the resetting of the structure. III. Additional Revisions to Project Plansheets, Specifications, and Bid Tab: A. An existing 42” reinforced concrete pipe, 42” flared end section, and concrete headwall were not previously shown on the plans. These existing improvements are now shown. Please reference revised sheet number 16 for their location. Given their location and the planned access route to the project site, the City anticipates damage to a portion of the above. The following line items have been included in the bid tab: 603 48 Inch Reinforced Concrete Pipe 24 LF 603 48 Inch Reinforced Concrete End Section 1 EA 601 Concrete Class B (Headwall) 1 LS B. The Floodplain Use Permit for the project has been included with this addendum. Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 9 of 17 FEDERAL AID PROJECT NO. STE M455-105 CONSTRUCTION PROJECT CODE NO. 18399 SP-1 REVISIONS OF SECTION 306 RECONDITIONING Section 306.02 shall include the following: The top 12 inches of the existing subgrade shall be reconditioned by blading and rolling. BASIS OF PAYMENT 306.03 Reconditioning will not be measured and paid for separately, but shall be incidental to the work paid for under Section 608 Sidewalks and Bikeways. EXHIBIT 3 - REVISED SPECIFICATIONS Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 10 of 17 FEDERAL AID PROJECT NO. STE M455-105 CONSTRUCTION PROJECT CODE NO. 18399 REVISIONS OF SECTION 601 STRUCTURAL CONCRETE Section 601 shall include the following: BASIS OF PAYMENT 601.20 Reinforcement will not be measured and paid for separately, but shall be incidental to the work. Payment will be made under: Pay Item Pay Unit Concrete Class B (Headwall) Lump Sum Payment will be full compensation for all work necessary to complete the designated pay item. SP-1 Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 11 of 17 FEDERAL AID PROJECT NO. STE M455-105 CONSTRUCTION PROJECT CODE NO. 18399 REVISION OF SECTION 621 STRUCTURE TEMPORARY ACCESS ROAD Section 621 is hereby added to the Standard Specifications for this project as follows: DESCRIPTION 621.01 This work consists of constructing and removing a temporary access road for the pedestrian bridge structures being built on this project, as called for in the plans. MATERIALS 621.02 The temporary access road shall consist of Class 6 aggregate base course and geotextile for separation. Any change in these material choices made by the Contractor may be submitted to the Engineer for review. Regardless of the final material choices, the Contractor shall ensure the quality of the actual materials being placed. 621.03 The plan view and typical section that are shown in the plans depict one possible way of accessing the site for the purpose of installing caissons, delivering materials, and erecting the pedestrian bridges. Prior to the start of work, the Contractor shall submit the actual location of the access road and the actual structural roadway system design based on soil conditions on the south side of the river. Traffic control shall be submitted along with the Method of Handling Traffic (MHT) and the Traffic Control Plan. Work shall not begin until written approval of the access road location and structural roadway system design has been received from the Engineer. CONSTRUCTION REQUIREMENTS The Contractor shall maintain the temporary access road for the structures being built on this project throughout the duration of the project. The Contractor shall not construct temporary access roads during the flood season (April 15th through October 1st). The access roads shall be removed and the site restored to its original state upon completion of the use, prior to start of the spring runoff. All pavement markings and traffic control devices shall be in accordance with the traffic control plans. METHOD OF MEASUREMENT Structure Temporary Access Road will not be measured, but will be paid for as a single lump sum where the access road is constructed, maintained, and removed. BASIS OF PAYMENT 621.04 The accepted quantities for temporary access roads measured as provided above will be paid for at the contract unit price bid. Pay Item Pay Unit Structure Temporary Access Road Lump Sum Payment will be full compensation for all work and materials required to complete the item, including, but not limited to, aggregate base course, earthwork, geotextiles, maintenance, and all work and materials required to place and remove them in order to return the site to its original state after the construction process has ended. Partial (50%) payment will be made upon completion of the roadway and the remaining amount will be paid upon project completion. SP-1 Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 12 of 17 EXHIBIT 4 - FLOODPLAIN USE PERMIT Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 13 of 17 Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 14 of 17 EXHIBIT 5 - REVISED DRAWINGS Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 15 of 17 Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 16 of 17 Addendum 2 - 8008 Poudre Trail at Mulberry & Lemay Page 17 of 17