1018REMOVAL OF EXISTING BRIDGES OR CULVERTS

1018.1DESCRIPTION—This work is the removal and disposal of existing bridges, culverts, or superstructures.

1018.2MATERIAL—

• Topsoil. Section 802.2

• Seeding and Soils Supplements. Section 804.2

• Mulching. Section 805.2

1018.3CONSTRUCTION—

demolition and removal methods to be used for the removal of an existing bridge or culvert, as indicated. Demolition is the point in time when a portion of the structure is being cut, sawed, drilled, or impacted through excavation or other means that could affect the stability of the structure. Provide, at a minimum, the following information within the demolition plan:

• Methods of protection and safety for the general public, inspection personnel, and construction personnel.

• Location and method of protection of utilities.

• Method of protecting streams/waterways when present.

• Phasing and sequence of operations indicating construction equipment to be used for the intent of the operation being performed.

• Location and weights of equipment during demolition.

• Weights of equipment/materials to be staged/stockpiled on the structure. Consider the condition of the existing structure when proposing to place loads on the portion of the structure to be demolished.

• When and how critical sections of the structure are to be removed (i.e. fracture critical components, arches, rigid frames) and provide analysis as required by the Representative to determine the structural stability of partial or complete parts of the structure being demolished.

• Method of providing temporary support for elements which will become unstable.

Demolition plan submissions for bridge removal are to be signed and sealed by a Professional Engineer, registered in the State if one or more of the following criteria apply to the structure being removed:

• Over a roadway;

• Span length exceeds 80 feet;

• Existing structures without plans with span length over 50 feet;

• Arches or rigid frame structures with span length over 50 feet;

• Fracture critical structures;

• Structures on, under, or adjacent to a railroad; or

• Specifically called for in the contract.

Do not proceed with demolition work until the plan has been reviewed and accepted. Acceptance of the demolition plan by the Representative will not relieve the Contractor of liability for safe demolition and/or removal of the structure. If the structure to be removed is over or under a railroad, submit the accepted demolition plan to the railroad company's Area Engineer. Do not proceed with the demolition work until written acceptance is received from the railroad company. Provide a copy of this written acceptance to the Department. Notify the railroad company a minimum of 10 days before starting demolition work. Failure to obtain the railroad company's acceptance will require an alternate plan submittal to the Department and the railroad company for review and acceptance.

with the Representative, Structure Control Engineer, Contractor’s superintendent, and the person responsible for development of the demolition plan if requested by a party with involvement in the demolition. Non-structural items attached to the structure must be removed before beginning demolition. Identify non-structural items and provide procedures for removal in the demolition plan. Use extreme caution during removal operations to avoid damaging portions of the structure that are to remain. Repair or replace any portion of the existing structure damaged or removed beyond the indicated limits as directed by the Representative at no additional cost to the Department. If indicated, leave in place portions of the existing substructure that do not interfere with new construction, landscaping, or other operations. Provide documentation (photographs, survey notes) for portions of the structure to remain in place if blasting is used as a method of removal. For structures over or carrying streams /waterways, remove existing structure as indicated. If removal limits are not indicated, remove existing structure a minimum of one foot below streambed. In areas where the new substructure is within the limits of existing, remove the existing structure in its entirety. Unless indicated, do not intentionally demolish or drop the existing structure into the stream/waterway. Immediately remove material that falls into the stream/waterway during the removal operation. After removing the existing structure, backfill the area where the existing bridge or culvert was removed, as specified in Section 202.3(f). Grade into the existing topography. If directed, place topsoil. Seed and provide soil supplements, as specified in Section 804.3. Use a type and rate of seeding and soil supplements typical for project. Mulch with the type and rate of mulch typical for project, as specified in Section 805.3. Where the removal area coincides with new construction, backfill voids below the elevation of the bottom of the proposed footings, using acceptable material, then compact, as specified in Section 202.3(f).

be retained by the Department. Match -mark the members or parts, and place them within the right of way at an indicated or directed location, within 1,000 feet of the existing structure. If indicated, load the members or parts, haul them to, and unload them at, the indicated location. If indicated, load the members or parts on railroad cars, ready for shipment. Carefully remove bridge plaques and/or benchmarks from the existing bridge and deliver them to the Representative at the Project Field Office.

structures, or parts of structures. Remove and dispose of the structure, or parts of the structure, in a satisfactory manner.

1018.4MEASUREMENT AND PAYMENT—

When removal area coincides with excavation area of new construction, the pay limit for removal extends 1 foot horizontally beyond the outer limits of the structure being removed. The Department will pay for backfilling of voids below the indicated elevation of the bottom of proposed footings for new construction as specified in Section 1001.4(f).

When removal area coincides with excavation area of new construction, the pay limit for removal extends 1 foot horizontally beyond the outer limits of the structure being removed. The Department will pay for backfilling of voids below the indicated elevation of the bottom of proposed footings for new construction as specified in Section 1001.4(f).