(A) The permittee shall, at their own expense, restore the surface of any public way to its original condition and replace any removed or damaged pavement with the same type and depth of pavement as that which is adjoining, including the gravel base material. All restoration shall conform to the engineering regulations, design standards, and specifications promulgated by the city and shall be accomplished within the time limits set forth in the permit, unless otherwise modified by the city.
(B) Temporary surfacing. Temporary surfaces are a critical component in maintaining highway and worksite safety. They can significantly reduce potential life-safety hazards and minimize collateral damage to adjacent road surfaces when properly installed.
(C) No trenches shall remain open overnight or for cessation of work of more than eight hours.
(D) Requirements governing the proper use and installation of temporary surfacing include:
(1) Temporary asphalt surfaces are required on any street opening if the final/permanent surface is not installed at the end of each workday.
(2) Temporary restoration of trenches for overnight use shall be accomplished by using MC mix (cold mix), asphalt treated base (ATB), or steel plates, as approved by the city.
(3) Regardless of method, the trench must be filled flush with asphalt to provide a smooth riding surface.
(4) The city may approve steel plates:
(a) When backfill operations of an excavation in the traveled way, whether transverse or longitudinal, cannot be properly completed within a workday, steel plate bridging with non-skid surface and shoring may be required to preserve unobstructed traffic flow;
(b) The permittee shall ensure that plating is structurally safe and adequate, but in no case less than the following requirements:
Trench Width | Minimum Plate Thickness |
Up to 12" | 1/2" |
> 12" and < 24" | 3/4" |
> 24" and < 30" | 1" |
> 30" and< 60" | 1 ¼" |
(c) Plates must be milled into the asphalt, so they are flush with the existing surface and placed using mastic and secured to the existing pavement by mechanical means;
(d) Plates should be welded together whenever possible to avoid slippage and pinned in place using approved dowels;
(e) Approach plate(s) and ending plate (if longitudinal placement) shall be attached to the roadway by minimum of two dowels through pre-drilled holes in the corners of the plate and drilled at least three inches into the pavement. Subsequent plates are butted to each other;
(f) Fine graded asphalt concrete shall be compacted to form ramps, maximum (slope 8.5%) with a minimum of 12-inch taper) to cover all edges of the steel plates. Hot or cold mix asphalt must be placed around the perimeter surface of the plate;
(g) When steel plates are removed, the dowel holes in the pavement shall be backfilled with either graded fines of asphalt concrete mix or concrete slurry or equivalent slurry that is approved by the City Engineer;
(h) The contractor is responsible for maintenance of steel plates, shoring, asphalt concrete ramps, and ensuring that they meet minimum specifications; and
(i) Install signage W8-24 "Steel Plate Ahead" when steel plates are placed on the roadway, and place sign WI-1 "Bump" with a W16-7P diagonal downward pointing arrow adjacent to the steel plate.
(E) Work site restoration. Unless authorized by the City Engineer, all paving, resurfacing, or replacement of street facilities shall be done:
(1) Within three calendar days or within seven calendar days from the time the excavation commences on all other streets; or
(2) Except as provided for during weather conditions which do not allow paving according to engineering regulations, including emergency permits issued between November 1 and March 15.
(F) The type and extent of site restoration is based on the location, width, depth, condition of road, number of excavations and distance between excavations.
(1) Perpendicular cuts.
(a) A “T” patch shall be made where the asphalt shall be removed and replaced a minimum of:
1. Two feet beyond the limits of any excavation, including undermining, where the excavation is up to four feet in depth;
2. Three feet beyond the limits of any excavation, including undermining, where the excavation is more than four feet in depth;
3. Match the thickness of the existing aggregate base; and
4. Match the thickness of the existing asphalt plus one inch, provided that the asphalt patch may not have a thickness of less than four inches or more than seven inches.
(b) On collector and arterial roads, perpendicular cuts shall extend to the full width of any travel lane regardless of the age of the road.
(c) When multiple cuts are made in the same location, the asphalt shall be milled and overlaid between patches that are 30 feet or closer to one another.
(d) When three or more cuts are made, a chip seal and fog coat shall be placed over the top of the patches. The chip seal shall extend across all patches and shall be the full width of the road.
(2) Longitudinal/parallel cuts.
(a) Parallel cuts shall meet the same requirements as under § 152.030(E)(1).
(b) Any parallel cuts that affect a travel lane shall be patched or overlaid to the width of the travel lane regardless of the age of the road.
(c) If the outside of the trenching is within three feet of any adjacent lane line, the entire adjacent traveled lane affected will be overlaid.
(3) Excavations on a road under a moratorium due to road construction or reconstruction within the past five years or application of a seal coat within the past three years.
(a) A 50-foot wide road patch shall be installed on either side of the excavation with the road patch extending across the entire width of the roadway; and
(b) If the roadway is under a chip seal coat moratorium, the permittee shall also reapply the seal coat over the patch.
(4) Requirements for paving installed during winter.
(a) During the winter months when local hot mix asphalt plants are closed, cold patch is
used to patch road cuts.
(b) Winter paving plans. Winter paving plans are required for all pavement cuts in the city right-of-way installed between November 1 and March 15.
(c) Winter paving plans shall include, but are not necessarily limited to:
1. Project-related information, including permit number, job address, contractor, temporary patch type, and install date. Temporary patches other than asphalt cold patch must be approved by the Public Works Director or City Engineer.
2. Cold patch (temporary patch) must be regularly checked and maintained by contractor throughout the winter months until a permanent patch is installed. If the patch is damaged or destroyed, the contractor must replace it immediately.
3. Patch must be flush to the road surface when installed. If the patch is raised above the road surface and causes damage to city snow-removal equipment, the contractor shall be held liable for damages.
4. Permanent patch plans for installing permanent patch shall include, but are not necessarily limited to:
a. Asphalt plant source for the hot mix;
b. Paving subcontractor;
c. Company performing the compaction tests; and
d. Anticipated install date for the hot mix patch.
(d) Cold patch shall be removed and replaced with a hot mix asphalt patch meeting the requirements of this chapter no later than May 15.
(5) Potholing/boring.
(a) Potholing and boring restoration shall meet the same requirements as trenching and pavement restoration.
(b) Potholing shall be a minimum of one foot beyond the excavation. All affected lanes will be ground down to a depth of two inches and paved not less than six and one-half feet wide for the entire width of the lane.
(c) Potholes greater than five feet in length, width, or diameter shall be restored to trench restoration standards.
(d) Restoration requirements utilizing vactor equipment will be determined by the city.
(6) Other requirements.
(a) Permittees will be required to provide a batch ticket from the asphalt plant specific to the asphalt that is being installed in the permanent patch to confirm mix being applied. No permanent patch will be accepted without batch ticket.
(b) Permittees shall measure and record the ambient temperature and the temperature of the asphalt as it is being placed. If the asphalt mix temperature has dropped below the minimum required temperature set forth in city standards, it cannot be used in a permanent patch.
(c) Hot mix design for permanent asphalt patches shall be in conformance with city standards. Any material placed as a pavement patch that does NOT meet the specified standards will be considered "temporary" and must be replaced with a conforming permanent patch within seven days.
(d) Concrete placed in the public way shall be in conformance with city standards. If concrete is found not to be in conformance, it will be rejected and must be replaced with a cold weather mix approved by the City Engineer or Public Works Director.
(e) Failure to install permanent patch. If the contractor has not installed the required permanent patch and has not contacted the Public Works Director or City Engineer in writing of an installation date, the City Engineer may revoke the permit. The city will use the permit bond to engage another contractor to finish the work.
(f) The city has the right to determine in the field that a full street-width (edge-of-pavement to edge-of-pavement) overlay is required due to changes in the permit conditions such as, but not limited to the following:
1. There has been damage to the existing asphalt surface due to the contractor's equipment.
2. The trench width was increased significantly, or the existing pavement is undermined or damaged.
3. Any other construction related activities that require additional pavement restoration.
(Ord. 06-2024, passed 3-6-2024)