§ 72-700. Crossings.

(a)

General considerations. The normal crossing under paved surfaces will be made without cutting the pavement. Pavement cuts will be allowed on roads with a surface that has been in place for ten years or longer, and has a traffic count of 3,000 vehicles or less per lane, per day. Requests for open street cuts on roads which do not meet this criteria will be considered. The primary consideration in evaluating requests for any open street cuts will be the safety and convenience of the public.

(1)

All subterranean crossings of a traveled way, 40 feet or more in length, shall require a tracked type bore and jack, with encased augur. Crossings less than 40 feet may be made by boring, jacking, pushing, pulling, driving or some combination of these.

(2)

Closed-end jacking may be permitted for pipe with a maximum outside diameter of three inches. The pipe shall extend six feet from the edge of pavement.

(3)

All other pipe must be jacked with the end open or bore and jacked and extend a minimum of six feet beyond the edge of pavement or as directed by the CDE.

(4)

If mechanical boring is used, the tip of the drill head shall not precede the end of the pipe by more than two inches.

(5)

The minimum depth of cover shall be 36 inches from the top of the pipe to the existing and proposed surface.

(6)

All such crossings shall be a continuous operation and be completed and the pits backfilled prior to ceasing the operation.

(7)

Any deviation from approved materials, location or operation shall be grounds for stopping work, directing the plugging of the line with concrete and restoring the area.

(b)

Open street cuts.

(1)

Traffic maintenance. As a general rule, a minimum of one lane of traffic must be maintained at all times and adequate safety precautions taken. Any street closures will require a traffic plan submitted at least seven days in advance of the proposed closure and approved by the county traffic engineer. If a detour is contemplated, the complete detour route must be indicated. Inclusive dates of the proposed closure must be firm.

Prior to closing the street to traffic, the appropriate police and emergency (rescue, fire, etc.) agencies shall be notified. In addition, the county traffic engineer and Volusia County School Board Transportation Director shall be notified. Traffic-control devices in accordance with the "USDOT Manual on Uniform Traffic Control Devices" shall be installed, and approved by a county inspector prior to starting work.

(2)

Unpaved streets. The top 12 inches of the excavation shall be stabilized with suitable materials to a condition equal to or better than existing surface. Compaction density of this layer shall equal 98 percent of maximum density as determined by AASHTO Specification T-180.

(3)

Paved streets.

a.

Pavement or roadway surfaces cut or damaged shall be replaced by the permittee in equal or better condition than the original, including stabilization, base course, curb and gutter or other appurtenances.

b.

Where existing pavement is to be removed, the surfacing shall be mechanical saw cut prior to trench excavation, leaving a uniform and straight edge, with minimum disturbance to the remaining adjacent surfacing. The width of cut for this phase of existing pavement removal shall be minimal.

c.

The base shall be replaced in accordance with county requirements.

d.

Immediately following the specified backfilling and compaction, the final roadway surface restoration shall be commenced as approved on the permit. Type S-I or other asphalt, concrete or other material approved by the CDE shall be used. In advance of final restoration, the existing asphalt surface shall be mechanically sawed straight and clean to the stipulated dimensions.

(Ord. No. 96-32, §§ XLII—XLV, 12-19-96; Ord. No. 2008-25, § III, 12-4-08)