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HomeMy WebLinkAboutAgenda Report - May 6, 1987 (45)r CITY OF LODI COUNCIL COMMUNICATION PUBLIC WORKS DEPARTMENT 1 TO: City Council FROM: City Manager MEETING DATE: May 6, 1987 AGENDA TITLE: Tokay Street Overlay, Stockton to Cherokee - Review of Project Alternatives RECOMMENDED ACTION: That the City Council discuss the alternatives and establish the paving alternative for this project and a guideline for future overlay projects. BACKGROUND INFORMATION: At a recent shirtsleeve meeting, staff presented a problem on the To ay Street overlay project. The problem involved the large amount and high cost of curb and gutter replacement. Council requested that the matter be given additional study and brought back at a regular meeting. To put the problem in perspective, the follov:4ng is a brief description of the normal maintenance program on a typical street: Aye of Street Description of Mork Cost Remarks 1 year Seal Coat $0.01/SF 5 to 10 years Crack Seal Varies 10± years Slurry Seal $0.05/SF 20± years Thin Overlay (Minor St.) $0.20/SF Little or no curb: gutter work done 20± years Thick Overlay (Major St.) $0.40 to Curb & gutter? $1.00/SF 30± years Reconstruct $3.00+/SF Usually widening so all curb & gutter is new, or major repairs to new standard The "curb and gutter" under the thick overlay remarks is shown with a "?" because there has been no formal procedure established for the following reasons: 'The City has done very few thick overlays over the last 10 years; usually the major streets needed widening or reconstruction. °The thick overlays that have been done were on streets that needed relatively little curb and gutter replacement. APPROVED: _ FILE NO. THOMAS A PFTER DN, City Manager CTOKAY2/TXTW.02M April 28, 1987 May 6, 1987 Page 2 Reduced funding levels have made the use of thick overlays imperative. We are now using these on older streets that 10 years ago we would have considered candidates for reconstruction. (Example - Pine Street between Cherokee and H'ghway 99.) As we use thick overlays on older streets, we are and will continue to find extensive amounts of poor curb and gutter. Broken and depressed curb and gutter allows water to pond and weakens the edge of the street subgrade (aside from being a nuisance). In the past, we have been attempting to repair gutters when the ponded crater extends out of the gutter into the street. This is referred to as the "Std. Design" in the remaining discussion. On a street with few driveways and reasonable grade, replacing curb and gutter is fairly straightforward. On a flat, old street with lots of driveways (like Tokay Street), curb and gutter repair becomes major project. There are four construction alternatives which are described below and on the attached drawing. Construction Alteratives Alterative Description Advantages Disadvantages 1. Std. Design Replace curb & otter Improves drainage High cost, still only a where ponding exceeds and street shoulder partial fix curpared to gutter width life carplete replacment, affects driveway access 2. Pave the gutter By replacing the high Relatively lar cost, Will not hold up to street spots in the gutter improves driveway sweeper broom, will require and paving from curb access additional maintenance to curb, the depressions (patching) will be filled and a marginal flow lire could be established. Sone older examples include: Hutchins Street (E) S/Pine, Elm Street (S) E/Sacramente, and Sacrmento (E) S/Elm 3. Fix worst gutter Replace only the Relatively lar cost Difficult to select which absolute worst depressed gutter to replace, leaves or raised gutters significant amount of poor gutter, affects driveway access 4. Do nothing with the gutter a) pave center of street only b) pave full width CTOKAY2/TXTW.02M Pave the travel lanes, leaving the parking lanes as is Pave gutter toe to gutter toe Least cost, no affect on driveways Low cost Leaves poor gutter Leaves poor gutter, affects drivewey access April 28, 1987 Citv Council May 6, 1987 Page 3 The costs of the alternatives applied to the Tokay Street project are shown on the attached bar chart. They would be representative of similar projects on other older, residential streets. Another alternative involves financing. Presently, these projects are funded out of the various street funds, which mainly come from taxes on fuel. The City could require the property owners to pay for the sidewalk and driveway work. Staff will present the details of the meeting. Jac L. Ronsko Pu is Works Director JLR/RCP/ma Attachment cc: Street Superintendent Tokay Street project at the Council CTOKAY2/TXTW.02M April 28, 1987 Driveways A related problem is that of driveway access. Older streets generally have a higher crown than the newer design streets and, in some cases, have higher curbs. Many modern vehicles scrape the pavement when using a driveway. An overlay only makes this problem worse. Staff feels that this problem is not one that the City should spend additional money to correct. Overlays are a normal, accepted street maintenance technique. Insuring that vehicles will not scrape is nearly impossible and even attempting to do so would take an enormous amount of engineering time and y construction expense in driveway replacement. 9 In some instances, property owners have installed illegal ramps with or without culverts in the gutter. These are a maintenance problem and often are a safety hazard. The policy has been to have any new ramps removed and for ones that have been in place, they will be removed when the curb and gutter is l replaced. 3 —Summary ' Staff feels that street maintenance is very important and should not be neglected. Street maintenance has a much higher priority than curb and gutter maintenance. Thus, the additional money that could be spent on curb and gutter replacement is better spent on pavement maintenance and reconstruction. The City of Lodi does budget a minor amount of funds for curb and gutter replacement. Initially, we were recommending that we pave over the gutter portion of the curb; however, after further evaluation, it is felt that Alternative 4b, paving the full street width with no curb and gutter. replacement, is in everyone's best interest. This alternative provides the property owner with a new street, allows the City to do curb and gutter repair in the future under our existing curb and gutter replacement program, and provides additional funds over the standard design for needed street maintenance in other areas. Staff will present the details of the meeting. Jac L. Ronsko Pu is Works Director JLR/RCP/ma Attachment cc: Street Superintendent Tokay Street project at the Council CTOKAY2/TXTW.02M April 28, 1987 Z y } o PUBLIC WORKS DEPARTMENT 40' TO 44' Tokay Street Overiay Alteonatives Stockton St. to Cherokee Ln. OVERLAY _ a GRIND ALT Z Overlay. replace poor curb & gutter, & driveways as required. ALT 3 Overlay, replace worst curb & gutter only. ALT 2 overlay, pave gutter, replace "High Spots" in curb & gutter. 28' r' ALT 4A Overlay travel lanes only. +% ALT 4B Full width (Similar to :� ;i s $240 $220 $200 $180 $160 U) 0 $140 c c N O $120 0 0 a $100 $80 $60 $40 $20 $0 Tokay St. Overlay -- Project Cost• Stockton to Cherokee Std Design Pave/Grind Pave Gutter Fix Worst Gutter Pave Center 28' Pave Full at. Alternates [� Curb/Gutter Swk/Dwy's