The Marion Common Council approved an amendment to General Ordinance #14 – 1991 (Street Cut Ordinance) at their regular meeting on April 16th.
Community investment in streets and roads is a major component of community assets. As custodians of these facilities, the City of Marion Engineering Dept. has the obligation and responsibility to protect the public interest. The amendment will provide various approaches to achieve quality repairs of Right of Way Street Cuts that will satisfy public motorists and achieve levels of service meeting the expectations of the City of Marion.
The Amended Ordinance effectively helps in defining how the City of Marion going forward will instruct anyone working in the Right of Way, primarily within the street, guidelines on how to properly repair the surface of the street for the following but not limited to:
Cuts that are repaired under the existing ordinance do not give enough guidelines on how to keep the existing driving lanes smooth for local traffic. The amendment offers guidelines and examples to help contractors understand what the City of Marion is requiring of them.
Cuts that are repaired under the existing ordinance do not give enough guidelines on how to have the cuts remain symmetrical with the roadway without irregular shapes and sizes. The amendment offers guidelines and examples to help contractors understand what the City of Marion is requiring of them.
COMPACTION OF STREET CUT:
Cuts that are repaired under the existing ordinance do not give enough guidelines on how to properly compact the asphalt once it is placed. This lack of compaction is causing the edges of the cuts to deteriorate prematurely. The amendment offers guidelines and examples to help contractors understand what the City of Marion is requiring of them.
ADDITIONAL FACTORS NOT LIMITED TO THE FOLLOWING:
Factors influencing the performance of a patch include the pavement material, soil conditions, climate, traffic and repair techniques. These roughly correlate with the same factors influencing the life of new pavement.
Poor construction techniques, such as rocking the jackhammer while cutting the boundary of the patch, can damage the area adjacent to the cut and further degrade the patch and surrounding pavement.
Pavement cut repairs made using quality materials and sound engineering and construction techniques tend to perform as well as the surrounding pavement. Poor performance of the patch tends to be a result of inadequate compaction of the materials, insufficient thickness of materials, poor quality of materials, and damage to the side of the cut.
Excavations and street repairs…even well-constructed street repairs…shorten a pavement’s life. Several types of street distress, settlement, alligator cracking, and potholes, often show up around patches. Quality street repairs should attempt to reduce the occurrence of these types of distress.
The estimated reduction in pavement life due to a utility cut was found to be from 20% to 56% of the original life of the pavement.
APPEARANCE OF RIGHT OF WAY STREET CUT REPAIRS:
The final appearance of the street after repairs are made should be acceptable with an engineered appearance. Street repairs that are satisfactory from a functional point of view may produce a negative reaction from the public if they give the appearance of being poorly planned or executed. The public’s perception of street repairs is based primarily on shape, size, and orientation or the geometry of a patch.
The new amendment does not affect how the repairs under the surface asphalt are to be done. For clarification on these repairs please refer to GO# 14 – 1991 and GO # 5 – 2004 and the City of Marion Standard Specs.
Mike Graft, Head of Engineering Department