5-113 Immediate corrective action shall be taken by the Contractor to remedy any condition in the structure that results in objectionable or distractive noise le vels, or results in the decking becoming loose, when subject to traffic loads. Screw-type nails will not be required to anchor timber plank de cking for pedestrian traffic use. The approach road surface, including shoulders, whether paved o r graveled, shall be maintained in a compacted and smooth condition. The temporary s tructure travel surface shall be constructed and maintained in an acceptably smooth con dition, as determined by the Resident. Immediate corrective action shall be taken by the Co ntractor to remedy objectionable roughness of the Sp ecial Detour riding surface. Provisions shall be made for a skid resistant wearing surface t hroughout the period of time the temporary structure is open to public travel for vehic ular and pedestrian traffic. A steel grid floor may be used for vehicular traffic if installed in accordance with the design plans and these specifications. Erosion control shall be accomplished in accordance with Sectio n 656 - Temporary Soil Erosion and Water Pollution Control. When the Project has been opene d to traffic, the temporary stru cture and approaches shall be removed to, or below, the streambed, finish ground lin e or original ground line, as applicable. The approaches shall be obliterated and the distur bed areas shall be stabilized to original, or better than original, conditions. The provisions of Section 104 - General Rights and Responsibilities, shall apply.
510.07 Contractor's Responsibility The Contractor shall be res ponsible for removal of
snow from areas provided for pedestrian traffic as well as vehi cular traffic in accordance with Section 105, General Scope of Work. In addition to normal maintenance, should any part, or all, of the Special D etour be damaged or destroyed by high water, or any other cause, prior to, or after, opening t he Special Detour to traffi c, it shall be repaired or replaced by the Contractor without additional compensation.
510.08 Method of Measurement Special Detours will be paid by t he lump sum.
510.09 Basis of Payment The accepted Special Detour will be pa id for at the Contract
lump sum price which price shall be full compensation for the r espective items, as called for in the Contract, including desi gn, construction, maintenance, c omplete removal, rehabilitation and permanent stabilization including loaming, s eeding and mulching. All gravel or borrow material and excavation needed to accommodate changes in elevation between temporary structures and existing roadways shall be inc idental to this item. The lump sum price shall also incl ude the cost of furnishing and re vising, as necessary, all plans, computations and certifications, as called for in the Contract. Payment will be made as follows: 60 percent of the lump s um price will be paid when th e Special Detour is acceptable and open to traffic; anot her 20 percent of the lump sum price will be paid when 5-114 the Special Detour is no longer n eeded and is closed to traffic ; the final 20 percent of the lump sum price will be paid when the Special Detour is removed and the area encompassing the Special Detour is acceptably restored. Traffic control devices, tempor ary erosion control, pavement, a nd dust control will be paid for in accordance with the applicable Contract items. Payment will be made under: P a y I t e m P a y U n i t
510.10 Special Detour, ___ foot Roadway L u m p S u m
Width Vehicular and Pedestrian Traffic N o t S e p a r a t e d 510.11 Special Detour, Pedestrian Traffic Only L u m p S u m
510.12 Special Detour, ___ foot Roadway L u m p S u m
Width Vehicular and Pedestrian Traffic S e p a r a t e d SECTION 511- COFFERDAMS
511.01 Description This work shall consist of the complete des ign, construction,
maintenance and removal of cofferdams and other related work, i ncluding dewatering and inspection, required to allow for the excavation of foundation units, to permit and protect the construction of bridge or other structural units and to protect adjacent Roadways, embankments or other structural units, in accordance with the C ontract.
511.02 Materials As specified in the cofferdam Working Drawing s.
511.03 Cofferdam Construction
A.Working Drawings. The Contractor shall submit Working Draw ings, showing the materials to be used and the proposed method of construction of cofferdams to the Department. Construction shall not start on cofferdams until s uch Working Drawings have been submitted. Any review of or comment on, or any lack of review of or comment on, these Working Drawings by the Department shall not result in an y liability upon the Department and it shall not relieve the Contractor of the respo nsibility for the satisfactory functioning of the cofferdam.
B.Construction. Construct cofferdams in conformance with the submitted Working Drawings. Cofferdams shall, in general, be carried below the e levation of the bottom of footings to adequate depths to ensure stability and adequate he ights to seal off water. Cofferdams shall be braced to withstand pressure without buckli ng, secured in place to prevent tipping or movement and be as watertight as necessary f or the safe and proper construction of the substructure Work inside them. With the ex ception of construction of a
Source: Maine Standard Specifications for Road and Bridge Construction, 2020 Edition. Pages 405–406 of 817.