(COLUMBIA, MO) -
Capital Paving, contracted by the City of Columbia public works department for street maintenance, has issued a tentative schedule for streets to be milled and overlaid in Columbia.
The schedule may change due to weather or other circumstances. The streets being milled and overlaid were identified in the City's 2016 Pavement Management Plan, developed by the public works department, as needing repair.
Capital Paving will complete as much work as they can before June but streets will be worked on throughout the summer, weather permitting.
Your patience is requested. The roads will not be completely closed, except perhaps for short periods depending upon the work flow, but please find alternate routes if you can. If you can't find an alternate route, flaggers will be in the area to assist you.
Tentative order of milling and overlay work:
1. Texas (Creasy Springs to Garth)
2. Remington (Creasy Springs to the "concrete section")
3. Creasy Springs (Bear Creek bridge to Obermiller Road)
4. Roundabout at Garth and Blue Ridge Road)
5. Providence Road (Blue Ridge to Smiley Lane)
6. Pierre Street (Ballenger Lane to the west end)
7. Mohawk Court (Mohawk Avenue to the end)
8. Port Way (Bull Run to Canaveral)
9. Appletree Court (Southhampton Drive to the end)
10. Dustin Drive (Bethel to Cedar Ridge)
11. Glencairn Court (Highland to the west end)
12. Vawter School Road (Old Mill Creek to 1200 feet west)
13. Lake Point Lane (Larail Drive to the west end)
14. Larail Drive (Crestwood Lane to Burrwood Drive)
15. Stewart Road (Glenwood to Garth)
16. Garth Avenue (Stewart to Broadway)
17. Orr Street (Park to Walnut)
The following streets only need overlay and will be worked into the schedule:
18. Flora Drive (Olive Street to the end)
19. Olive Street (Brown Station road to the end)
For regular updates on street maintenance progress throughout the summer, check the Public Works Twitter feed @pub_works (twitter.com/pub_works) and Facebook page (www.facebook.com/ColumbiaMissouriPublicWorks).
What is mill and overlay?
There are 1,360 lane miles of roadway maintained by the City of Columbia. Street maintenance follows the 2016 Pavement Management Plan, which was presented to the City Council on May 2, 2016. The plan is based on the principle that preventative and rehabilitative street maintenance is more cost effective than reconstruction.
One form of street maintenance is sometimes referred to as "mill and overlay". This process consists of two major steps: 1) milling the street and 2) laying the new asphalt (overlay). To mill the street, workers use heavy equipment to remove the surface of the street and place it into dump trucks. Workers then use a machine to spray "tack," a liquid asphalt coating that will assistant is adhering the new asphalt to the road. The final process is overlay, which is shorthand for laying asphalt on the street. Once asphalt has been laid, it can be driven on almost immediately. However, drivers are asked to watch for and respect the detour requests of flaggers as street workers put the final touches on the road, such as smoothing it out with heavy road rollers.
"The benefits of asphalt are durability, cost effectiveness, smoothness and the ability to install it relatively quickly," said Dave Nichols, public works director for the City of Columbia. "It is also a recyclable asset."
Milling and overlaying a street is about five times more expensive than other options such as chip sealing, but about five to 10 times less costly than reconstruction.
"The purpose of the program is to focus on a workable and affordable plan for improving the integrity and service life of City streets over the long term, while reducing the costs associated with deferred maintenance," said Nichols.
According to City staff, the estimated funding needed for sustained Columbia street maintenance should be at least $4.8 million per year. In general terms, this would allow for maintenance work on about 10 percent of our streets each year, essentially letting us prolong the life of our streets. The current budget for street maintenance is $3.2 million.
"Due to the funding gap, decisions regarding how to spend the allocated funds must be made utilizing good data and technical resources," Nichols said.
"The goal is to stretch the money as far as we can in order to keep as many roads as possible in good shape for as long as possible," said Richard Stone, engineering manager.
The Columbia Public Works Department is accredited by the American Public Works Association.
Additional Resources:
Link to Press Release - May 10, 2016
2016 Pavement Management Plan
2016 Proposed Mill & Overlay map
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