Section 575 — Temporary Bridges

Description

575.01This work consists of designing, constructing, maintaining, and removing temporary bridges.

Construction Requirements

575.02Submittals . Submit drawings and calculations according to Subsection 104.06. Submit detailed drawings showing sizes, arrangement, and quality of materials to be used in the construction. Provide design calculations and supporting data in sufficient detail to allow a structural and safety review of the proposed design. Provide catalog or equivalent data indicating a manufactured device’s recommended safe load capacity. Include foundation design calculations and other relevant foundation design data.

575.03General. Construct concrete structures according to Section 552. Construct prestressed concrete structures according to Section 553. Construct steel structures according to Section 555. Construct timber structures according to Section 557. Construct falsework according to Section 562. Construct bearing devices according to Section 564. Construct temporary bridges that meet the minimum st rength requirements for the HL -93 live load according to AASHTO, LRFD Bridge Design Specifications . Provide bridges that can carry applied loadings from construction vehicles that will cross the temporary bridge. Design the temporary bridge to meet 2 -year flood requirements. Remove temporary bridges when they are no longer needed as directed or approved. Repair damage to the existing structure or roadway approaches due to the Contractor’s activities as directed. Limits of the available work area are shown in the plans.

575.04Acceptance. Material for temporary bridges will be evaluated under Subsections 106.02, 106.03, and 106.04. Construction of temporary bridges will be evaluated under Subsections 106.02 and 106.04. Bearing devices will be evaluated under Section 564. Concrete will be evaluated under Section 552. Prestressing steel will be evaluated under Section 553. Steel structures will be evaluated under Section 555. Timber structures will be evaluated under Section 557. 660 Temporary works will be evaluated under Section 562.

Measurement

575.05Measure the Section 575 pay i tems listed in the bid schedule according to Subsection 109.02 .

Payment

575.06The accepted quantities will be paid at the contract price per unit of measurement for the Section 575 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 . Progress payments for temporary bridges by the lump sum will be paid as follows:

(a)25 percent of the pay item amount will be paid after the drawings are approved.

(b)An additional 50 percent of the pay item amount will be paid after installation.

(c)The remaining portion of the pay item amount will be paid after the temporary bridge is removed from the project. Section 576. — RESERVED