Two lanes on 44th Street, one in each direction, shall remain open at all times during construction. The methods used for maintaining of this traffic shall be shown in the contractor’s phasing and traffic control plans.

The existing culvert is used as an underpass for golf carts on the adjacent Ahwatukee Lakes Golf Course. The Contractor shall place warning signs and barricades in the golf cart paths to prevent carts from using the underpass during construction. The Contractor shall provide sign to detour golf carts around the construction site and across 44th Street. The contractor shall the coordinate the location and timing of this detour with Chris Morlock of the Ahwatukee Lakes Golf Course, 602-893-3004. Traffic speed on 44th Street shall be limited to 15 mph through the construction area and golf cart detour area.

The Contractor shall provide one off-duty police officer, as defined in the City of Phoenix Traffic Barricade Manual, at signalized intersections affected from 6:00 a.m. to 7:00 p.m. weekdays, and during working hours nights and weekends when traffic is restricted (as described in the Traffic Barricade Manual).

When construction activities do not restrict traffic through the intersections, police officer hours may be reduced or suspended at the direction of the Engineer.

Bituminous joint filler shall conform to the requirements of AASHTO M213.

Joint sealant material shall be a one component, hot poured type, conforming to the requirements of either ASTM D 3406 or ASTM D 3569. Joint sealant shall not contain any coal-tar materials.

The following requirement shall be added to paragraphs 7.1 of ASTM D 3406 and 7.1 of ASTM D 3569:

The cost of the joint filler and hot-poured sealant shall be incidental to the cost of the concrete for the project.

New concrete used for the top slab replacement of the 44^th Street Culvert shall have a corrosion inhibitor admixture added to all concrete mixes. The inhibitor shall be a migrating type inhibitor such as MCI Grenades, as manufactured by the Cortec Corporation or an equal approved by the Engineer. The admixture shall not contain calcium nitrate or additives that may be potentially harmful to the environment. The admixture shall not affect the air entrainment, compressive strength, slump or set up time of the concrete.

The admixture shall be added to the concrete in accordance with the manufacturer recommendations. A copy of the manufacturer recommendations shall be supplied to the Engineer at least 48 hours prior to using the admixture. If the admixture is put in the concrete mix at the batch plant, a written record of the amount of admixture used and the total mixing time shall be supplied to the engineer.

All new reinforcing steel delivered to the project site shall be stored on and covered with a non-permeable tarp to prohibit surface corrosion prior to placement. Before placement all reinforcing steel shall be free of dirt, dust, surface rust, corrosion or foreign materials. The steel shall cleaned by water jet, sand blasting or wire brush as required prior to placement to meet this condition. If the reinforcing steel is noted to have surface rust or corrosion after it is placed, it shall be cleaned with a rust remover. The remover shall be VCI-423 or VCI-426, as manufactured by the Cortec Corporation, or an equal approved by the Engineer.

All spalled culvert areas noted on the plans shall be repaired in accordance with the following steps: