SP_518_Raise_Existing_Bridge (1) (3) (1).pdf

Revised: June 17, 2026 Date: March 10, 2005

First Use Date 2001 Specifications: December 12, 2002

DEPARTMENT OF TRANSPORTATION

STATE OF GEORGIA

SPECIAL PROVISION

SLATE MINE ROAD over PINE LOG CREEK Gordon County

Section 518—Raise Existing Bridge

Add the following:

518.1 General Description

This work consists of raising an existing bridge the minimum amount necessary to remove and reset bearing assemblies and replace existing bent caps while maintaining traffic in accordance with the Specifications and Plan Details.

518.1.01 Definitions

General Provisions Section 109 through 150.

518.1.02 Related References

Section 500

Section 501

518.1.03 Submittals

A. Shop Drawings

Submit proposed methods for raising the bridge spans in sufficient time for review and approval by the Engineer prior to commencing work.

B. Calculations

Submit calculations for the proposed method and materials.

518.2 Materials

Ensure that materials are in accordance with the Plans and Specifications.

518.3 Construction Requirements

518.3.01 Personnel

General Provisions 101 through 150.

Section 518 – Raise Existing Bridge

518.3.02 Equipment

518.3.03 Construction

A. Contractor Options

1. Use either of the following methods:

a. Hydraulic jacks may be placed under each beam at each bent and act in unison in each bay at each bent and be supported on false bents or cribbing.

b. Hydraulic jacks may be used in conjunction with jacking beams and act in unison in each bay at each bent and be supported directly on existing cap unless cap is being replaced as shown in the plans.

c. Jacking directly on or using the edge beams will not be allowed.

2. Jack the bridge by individual spans or in unison with adjacent spans. Do not exceed 1½ inches (37.5 mm) differential height between spans or bridge approaches.

B. Blocking

1. Temporary: Use standard steel rolled shapes and/or plates as temporary blocking under jacks. At other locations, standard steel rolled shapes or oak timbers may be used.

2. Permanent: Use steel bearings plates, shim plates and steel pedestals, and existing bearing assembly plates unless otherwise shown in the plans. When multiple shim plates are used, weld plates all around at each interface. The minimum thickness of any shim plate is ¼ inch (6 mm).

C. Anchor Bolts

Install new anchor bolts in accordance with the Plans.

D. Manifolds and Gauges

1. When the jack stroke is greater than 1 inch (25 mm), use a gauge at each jack and use a minimum of one manifold at each bent.

2. When the jack stroke is equal to or less than 1 inch (25 mm), use a minimum of one gauge per manifold.

3. Only use standard steel rolled shapes and/or plates as temporary blocking under jacks. At other locations, standard steel rolled shapes or oak timbers may be used.

D. Damage Repair any damage to the bridge or road resulting from bridge jacking work at no expense to the Department.

518.4 Measurement

No separate measurement for payment of Raise Existing Bridge will be made.

518.4.01 Limits

General Provisions 101 through 150.

518.5 Payment

This work shall be included in the overall price bid for Spall Repairs and Realign Bearings and Repair Anchor Bolts.

This Lump Sum price for those items is full compensation for furnishing all labor, materials, equipment, and services necessary to raise the bridge. This cost also includes any costs associated with obtaining access, clearing, grading, excavation, and temporary shoring.

Payment will be made under:

Item No. 518 Raise Existing Bridge, STA -

518.5.01 Adjustments

RabunB

NOTES & COMMENTS

No Separate Payment