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Home My WebLink About8. Pine Bend Trail Street Improvements, City Project #199 . } 1��M # $ *��r*�*****�r***�r**********��**�******MEMO��*�r**�r***�r*****�**********�***�r*�r* DATE: MAY 31, 1990 TO: MAYOR & COUNCILMEMBERS C/O CITY ADMINISTRATOR JILK FROM: CITY ENGINEER/PUBLIC WORKS DIRECTOR HEFT RE: ITEM FOR JUNE 5, 1990 COUNCIL MEETING PUBLIC HEARING Project #199 , Pine Bend Trail Street Improvements The purpose of this public hearing is to con'sider the improvements to Pine Bend Trail. The improvements basically consist of repairing the existing pavement and installing a bituminous overlay over the existing pavement and adding bituminous paved shoulders. The original public hearing for this project was held September 19, 1989. The reason for this second public hearing is because the bids came in much higher than the estimated cost in the original feasibility study. Our Consulting Engineers have provided an explanation as to those increased cost and they are attached, along with a recommendation ta bring these cost back in line with the original feasibility report. I am in agreement with these recommendations. She most significant one being reducing the removal of the cracked pavement and placing new pavement down prior to the overlay. The basic reason for doing this is to reduce future reflective cracking. Whenever existing pavements are overlayed with new blacktop, the cracks in existing pavement will eventually reflect up through the new overlay. By cutting back on removing the cracked pavement, except for the most severe areas, we will have to seal more cracks and probably earlier than if we had removed this pavement. However, it would be much more cost effective to seal the cracks than it wauld be to remove this pavement. For $65, 000, I would estimate I could seal these cracks for 12-.15 years. Even though we are more in line with the original feasibility report cost, I took the liberty to increase the assessable cost so that we should be covered when it comes time to assess this project. Assuming Council will close the hearing and proceed with the project, it would be appropriate to receive the bids and award the contract, which is included as a separate item under new business. Recommended action for Council to consider is to adopt the attached resolution authorizing proceeding with the Pine Bend Trail Street Improvements, Project #199. � i . a � � MEMORANDUM .� - ENGlNEER51 ARCHlTECT51 PLANNERS 3535 UADNAIS CENTER ORIVE,SL PAUL,MINNESOTA 55110 612 490-2000 "��{:�'�,rc`r � �iAY � � �Q,� ��"1►R�;p,��..a►�... TO: MR. RICH HEFTI, CITY ENGINEER, CITY OF ROSEMOUNT FROM: DAVE SIMONS DATE: MAY 10, 1990 SUBJ: PINE BEND TRAIL STFtEET �REC�NSI'RUCTION CITY PROJECT NO. 199 CITY CONTRACT .NO. 1990-1 SEH FILE NO: 89273 Bids taken on April 27, 1990 for the above referenced project resulted in a low bid of 5275,341. 63 from Ace Blacktop, Inc. The low bid is approximately 48$ higher than the estimate of $185,000 which was given in the Feasibility Report. Most of the additional cost is attributable to an increase in the estimated patching and sealing quantities. After reviewing tkie project with our staff pavement specialist, we felt that a higher percent of the existing pavement may need to be replaced if reflective cracking is to be minimized. Accordingly, patching and sealing quantities were increased by approximately 65g over the Feasibility Report quantities. A crack sealing fabric was also added to increase the life of the overlay. It should be pointed out that the quantities listed on the unit price schedule are only estimates. The actual quantities would be determined in the field, and may be reduced as appropriate. In addition to patching and crack sealing, several other factors have contributed to the extra cost. Signing, striping, and paved shoulders were added to the contract. Bid prices for 1990 have also been higher than projected. SHORT EWO1T ST.PAUL, CHIPPEWi4 FALlS, HENDRICKSON INC MINNESOTA WISCONSIN . � Memorandum May 10, 1990 Page #2 As you requested, we have reviewed the Contractor's bid and have found that there are several options available to the City for cost savings on the pro�ect. 1. Reduce the amount of bituminous patching and crack sealing by 50$. If bituminous patching and crack sealing prior to the overlay is limited to the most severely distressed areas, approximately $65, 000 could be savsd b�r the City. Although much of the existing pavement is cracked, deflection tests indicate that the structural strength of the pavement is stili relatively high. The disadvantage to not repairing minor cracks is that reflective cracking through the overlay is more likely. Reflective cracking increases future maintenance costs and decreases the overall life of the pavement. 2. Substitute the Type 31 bituminous mixture for the bituminous patching migture. The bituminous patching mixture (3/8" � minus w/high oil content) is commonly used for repairing small surface patches and large cracks because it tends to be easier to place and it adheres better to the adjacent pavement. If patching is limited to larger patches beneath �iic ^v'v'c.�ic'y'j ii,rie �l��ap�� °Ty�ie 31 mi�ture coulci be US�C�. This could save the City approximately $10,000. 3. Minimize clearing and grubbing at Station 54+00, RT. The intent of the clearing and grubbing at this location was to provide a safer roadway via increased horizontal sight distance. Adjacent industries have commented about poor sight distance due to overhanging trees at this location. From a safety standpoint, it would be best to clear all trees and shrubs that restrict sight distance. However, if the work is limited to clearing and/or limbing within ' the right-of-way only, the City could save $17, 000 in clearing, grubbing and turf establishment costs. � . � Memorandum May 10, 1990 Page #3 These changes could be incorporated into the project by Change Order. The total potential savings would be approximately 592, 000, which would reduce the Contract Amount to about $183,000. In addition, the City share would be reduced to approximately $30,000. (Crack .repair and pavement patching are �ansidere�. t� be �'itg cost"�` ba�au�e thev arp re�ated t� maintenance tasks) . � Please call if you have any comments or questions. DFS/cih ( ♦ k CITY OF ROSEMOtTNT DAKOTA COUNTY, MINNESOTA A RESOLUTION FOR APPROVAL OF PINE BEND TRAIL STREET IMPROVEMENT3 CITY PROJECT #199 WHEREAS, the City Council of the City of Rosemount by a unanimous vote ordered a feasibility report for Pine Bend Trail Street Improvements, City Project #199; and WHEREAS, the City Council has received and accepted the feasibility report on September 19, 1989 on City Project #199; and W�iEREAS, the City Council ordered and held a public hearing to receive input on the project. NOW THEREFORE BE IT RESOLVED, that the City Council of the City of Rosemount hereby orders the improvements of Pine Bend Trail, City Project #199. ADOPTED this 5th day of June, 1990. ' Vernon J. Napper, Mayor � AT'TEST: Susan M. Johnson, City Clerk Motion by: Seconded byz Voted in favor• Voted against•