STAFF REPORT
Operations Committee,
August 7, 2008
Requests for Assistance with Street Storm Drainage
System Rehabilitation (EN09-016)
Consideration of Requests for Assistance with Street Storm Drainage System Rehabilitation
Speaker: Mr. Dan Clinton
From: Tim Bailey, P.E., Director of Engineering
Prepared by: Dan Clinton, P.E.
Approved by:
William B. Coleman, Jr., Town Manager
Approved by: Benjamin T. Shivar, Assistant Town Manager
Beginning in Fiscal Year 2007, council adopted a program to conduct annual storm drainage improvements to Cary’s streets. Problem areas such as those where water stands at the curb, pipes fail and/or freezing water remains on the road surface are examples of the types of maintenance issues intended to be addressed by this project.
This type of routine maintenance of the Town’s storm drainage system prevents failures and alleviates safety hazards. Town staff annually evaluates the storm drainage system and ranks problem areas from highest to lowest priority. Annual funding is applied to those projects ranked as highest priority first.
Summary of Street Storm Drainage Rehabilitation Projects
The following table summarizes staff’s recommendation and cost estimate for 11 projects identified this year.
Table for Street Storm Drainage Rehabilitation Projects
|
Location |
Identified Problem |
Work Plan |
Rating (maximum 40 points) |
Estimated Cost* |
Cumulative Estimated Costs |
|
Woodland Dr and Lake Dr |
Standing water at intersection |
Add Curb/Gutter and Flume |
24 |
$9,000 |
$9,000 |
|
Orion Ct |
Seep coming up at road and flowing across cul-de-sac |
New Catch Basin and French Drain |
23 |
$12,000 |
$21,000 |
|
813 Roanoke Dr |
Gutter misaligned |
Redo curb and add catch basin |
23 |
$10,000 |
$31,000 |
|
Ralph Dr and Penny Ln |
Standing water at intersection |
Rework road and curb |
22 |
$9,000 |
$40,000 |
|
424 Farmington Woods |
Holding water in the radius |
Replacement of the curb and re-working of the roadway |
22 |
$9,000 |
$49,000 |
|
115 Leeward Ct |
Standing water in cul-de-sac |
New Catch Basin and Curb |
20 |
$12,000 |
$61,000 |
|
717 Madison Ave |
Water jumping curb causing property damage |
2 catch basins to improve drainage |
19 |
$32,000 |
$93,000 |
|
211 Swiss Lake |
Severe settlements in the curb as well as the roadway |
Replace curb and some extensive road work |
14 |
$37,000 |
$130,000 |
|
McDuff and Laughridge Cir |
Standing water at intersection |
Catch basin and curb |
14 |
$17,000 |
$147,000 |
|
1005 Vickie Rd |
Standing water at intersection |
catch basins and curb work |
13 |
$47,000 |
$194,000 |
|
Fox View Place |
Low road with standing water in cul-de-sac |
Overlay road, redo multiple driveway entrances and add catch basin |
12 |
$95,000 |
$289,000 |
|
* Prices listed are very preliminary. Sub-surface utility investigation has not yet been conducted, and utilities are assumed not be in conflict. |
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Projects are ranked according to degree of impact to the surrounding roadway/private property, safety risk, engineering complexity, and overall cost.
Fiscal Impact: The Street Storm Drainage Rehabilitation Project (ST1172) has been funded in the amount of $500,000. All eleven projects identified within this report can be completed within existing funding. Any remaining funding will either be utilized to fund future such efforts this year or returned to General Capital Reserve at the end of the fiscal year for other capital project needs.
Staff Recommendation: Staff recommends approval of the listed storm drainage system rehabilitation projects.