Part 1 — General
1.1 Section Includes
A.Moving bridges that are constructed offline to their final locations by self - propelled modular transporters (SPMT), lateral slide, longitudinal launch, or crane.
B.Preparing the bridge staging area and travel path for constructing and moving bridges.
C.Bridge temporary works for constructing new bridges at a temporary location.
D.Bridge monitoring.
E.Assessing and providing remediation before opening bridge to traffic.
1.2 Related Sections
A.Section 02455: Driven Piles
B.Section 03055: Portland Cement Concrete
C.Section 03 211: Reinforcing Steel and Welded Wire
D.Section 03310: Structural Concrete
E.Section 03390: Concrete Curing
F.Section 03392: Penetrating Concrete Sealer
G.Section 03412: Prestressed Concrete
H.Section 03924: Structural Concrete Repair
I.Section 05120: Structural Steel
J.Section 06055: Timber and Timber Treatment
K.Section 09981: Concrete Coating
1.3 References
A.AASHTO LRFD Bridge Construction Specifications
B.AASHTO LRFD Bridge Design Specifications
C.UDOT Bridge Management Manual
D.UDOT Structures Design and Detailing Manual (SDDM)
E.UDOT Structures Quality Control/Quality Assurance (QC/QA) Procedures
1.4 Definitions
A.Deflection Change – Elevation change of the ends of a span relative to its mid-span.
B.Embedded Items - Scuppers, manholes, anchor bolts or fixtures for bearings, barriers, light -poles, signs, utilities, similar appurtenances, and post-tensioning components - whether permanent or temporary .
C.Twist – Measurement of the upward or downward deflection of one bridge corner relative to the plane defined concurrently by the elevations of the other three bridge corners.
1.5 Submittals
A.Contract Plan Revisions for approval.
1.Provide revised plans detailing dimensional, structural , and other physical changes to the permanent structure necessitated by the construction methods.
2.Design and detail changes according to the AASHTO LRFD Bridge Design Specifications and the UDOT Structures Design and Detailing Manual (SDDM) .
3.Provide supporting c alculations that include at least the following:
a.Summary of revisions and evaluation .
b.Calculations showing that the proposed changes do not adversely impact the load carrying capacity of the structure .
c.Document ation of reductions in load carrying capacity. 1) Update the load rating package according to the current edition of the UDOT Bridge Management Manual when the inventory load rating factor is reduced by 2 percent or more, or when the inventory load rating listed as shown is less than 1.02 and the load carrying capacity of the structure is reduced. 2) Revise the move concept and proposed plan revisions if the revisions result in a load rating factor less than 1.0. a) Load rating factors less than 1.0 will not be accepted.
d.Check the system for the load conditions defined in the SDDM if the defined support point locations are changed.
4.Complete and document QC/QA according to the SDDM and UDOT Structures Quality Control/Quality Assurance (QC/QA) Procedures.
5.Provide the seal of a Professional Engineer (PE) or Professional Structural Engineer (SE) licensed in the State of Utah on plans and calculations covering the plan revisions made.
B.Working Drawings for Bridge Temporary Works for review.
1.Design according to the AASHTO LRFD Bridge Construction Specifications Section 3 (Temporary Works) .
2.Design according to the AASHTO LRFD Bridge Design Specifications and the SDDM when the bridge temporary works and permanent bridge will be used as a public route.
3.Provide drawings defining the geometry, materials , and member sizes of the bridge temporary works.
a.Include foundations and details of temporary bents or abutment seats to support the span under construction, including piling, spread footings, or other foundations.
4.Provide calculations indicating the bridge temporary works are adequate for the proposed loads and that settlement or elastic deflections of the bridge temporary works will not adversely affect the bridge moved.
5.Complete and document QC/QA according to the SDDM and UDOT Structures Quality Control/Quality Assurance (QC/QA) Procedures when the bridge temporary works and permanent bridge will be used as a public route.
C.Lifting, Transporting, and Setting Plan for review.
1.Bridge move using SPMT or similar system
a.Provide details of the bridge staging area and travel path including at least the following: 1) Location 2) General layout 3) Surface grading 4) Surfacing material 5) Drainage 6) Environmental protection 7) Material storage areas 8) Access 9) Fences 10) Gates 11) Barriers
b.Provide a plan view of the travel path identifying all obstacles requiring removal and replacement, all structures crossed , and all utilities crossed , over and under.
c.Provide documentation of utility coordination. 1) Signed confirmations of coordination from the utility owner are required when crossing high pressure gas lines and main water lines.
d.Provide details of travel path and planned movements. Include at least the following: 1) Plan view of axle lines. 2) Average effective ground pressure under SPMT or similar units. 3) Maximum single wheel load and anticipated wheel contact patch size.
e.Provide a geotechnical evaluation of the bridge staging area and travel path . 1) Identify areas requiring ground improvement. 2) Provide details of required improvements.
f.Identify and detail plating or bridging required at utilities.
g.Identify bridges crossed. 1) List the structure number. 2) Provide a load rating and evaluation of the structure crossed.
h.Identify all pipes, culverts, and walls, for example, within the load influence. 1) List their structure number if available. 2) Provide a load rating/evaluation for the load influencing them.
i.Define and detail any temporary shoring of structures crossed. 1) Temporary shoring is required if the operating load rating factor is less than 1.
j.Identify items requiring temporary removal and replacement. 1) Coordinate with the owner of the item to determine plan requirements and limitations.
k.Include the minimum horizontal clearance to the critical obstacle along the path.
l.Include the minimum vertical clearance to the critical obstacle along the path.
m.Include means to adjust final alignment, elevation, and location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.
2.Bridge move using lateral slide or longitudinal launch.
a.Provide details of the bridge staging area and travel path including at least the following: 1) Location 2) General layout 3) Surface grading 4) Surfacing material 5) Drainage 6) Environmental protection 7) Material storage areas 8) Access 9) Fences 10) Gates 11) Barriers
b.Provide a plan view of the travel path identifying all obstacles requiring removal and replacement, all structures crossed , and all utilities crossed , over and under.
c.Provide documentation of utility coordination. 1) Signed confirmations of coordination from the utility owner are required when crossing high pressure gas lines and main water lines.
d.Provide details of travel path and planned movements. Include at least the following: 1) Maximum permissible deviation from the exact slide plane to the constructed slide plane. 2) Maximum possible load on a single slide bearing. 3) Minimum possible load on a single slide bearing. 4) Clearances to fixed obstacles. 5) Plan for controlling and directing the location of the bridge during the slide. 6) Maximum deflections along the slide path on the temporary support and permanent structure during the move.
e.Provide a geotechnical evaluation of the bridge staging area and travel path. 1) Identify areas requiring ground improvement. 2) Provide details of required improvements.
f.Identify and detail plating or bridging required at utilities.
g.Include means to adjust final alignment, elevation, and location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.
3.Bridge move using cranes.
a.Meet the erection plan requirements in Section 05120 for bridges using steel girders.
b.Meet the erection plan requirements in Section 03412 for bridges using concrete girders.
c.Include means to adjust final alignment, elevation, and location to correct for or accommodate deviations from the required setting tolerances if tolerances are not met.
D.Move System for review
1.Bridge move using SPMT or similar system.
a.Provide details of the move system. 1) Move equipment includes the heavy lift system such as SPMTs, jacks, or cranes used to raise or lower the structure, and transport systems such as SPMTs or similar systems used to laterally transport the structure.
b.Provide at least the following information: 1) Show the center of gravity (CG) of the bridge being moved and the weight being moved. a) Base the CG and weight on actual, known component dimensions and known material densities. 2) Support locations between the move equipment and the bridge being moved. 3) Maximum vertical load demands and capacities. a) On the controlling axle line. b) On the controlling vertical jack. 4) Maximum vertical load demands and capacity of the weakest component in the vertical load path. 5) Show the number of wheels or axles in each hydraulic group and the geometry of the wheels or axle lines in each hydraulic group. a) Use of at least 3 hydraulic groups is required. 6) Anticipated maximum stroke requirements. 7) Stability limits including, but not limited to, the maximum longitudinal and transverse grades along the path and the maximum permitted longitudinal and transverse grades based on system properties. 8) Maximum permitted deviation of support columns from vertical and maximum anticipated deviation of support columns from vertical. 9) Step by step move procedures. a) Include operational details for the control of the lifting, transport ing, and setting. b) Include quality control steps. Quality control steps in this context are the steps operators take to assure the system is properly set up, and that the set up matches the submitted drawings. c) Include steps to assure safety during the move. 10) An hour by hour schedule of the move.
2.Bridge move using lateral slide or longitudinal launch.
a.Provide details of the move equipment. 1) Move equipment includes the heavy lift system ( for example, jacks or cranes used to raise or lower the structure), and transport systems (jacks, slide pads, rollers or other systems used to laterally move the structure).
b.Include at least the following information: 1) Weight of the system being moved. 2) Minimum and maximum anticipated friction coefficients. 3) Minimum and maximum anticipated slide force. 4) Jack capacity. 5) Maximum capacity over demand ratio of the weakest component along the lateral force system. 6) Stroke length and rate. 7) Method to reverse movement along the travel path. 8) Equipment used to control and direct the location of the bridge during the slide. 9) Step by step move procedures. a) Include operational details for the control of the lifting, transport ing, and setting. b) Include quality control steps. c) Quality control steps in this context are the steps operators take to verify the system is properly set up, and that the set up matches the submitted drawings. d) Include steps to provide safety during the move. 10) An hour by hour schedule of the move.
3.Bridge move using cranes.
a.Included in Lifting, Transporting, and Setting Plan for review of bridge moves using cranes. Refer to this Section, A rticle 1.5, paragraph C.
E.Contingency Plan for review.
1.Identify potentially disruptive events and provide a contingency plan for each.
2.Address equipment breakdown, delays during the move, and any other risks.
3.Define key personnel, their responsibilities . and their required actions if any part of the contingency plan must be implemented.
4.List backup equipment on site and local contacts for replacement parts or service.
5.Provide detour plan in case road will not reopen as scheduled.
F.Safety and Communication Plans for review. Include at least the following:
1.Safety Plan
a.Schedule of operations
b.Organization of machinery
c.Safety gear requirements
d.Operational perimeters
2.Communication Plan
a.Public impacts, methods of communication during bridge move , and lead communicator.
b.Contact information for : 1) Bridge move supervisor (primary point of contact for the move) 2) Move system supervisor 3) Contractor supervisor 4) Safety supervisor 5) Engineer of record 6) Contractor’s engineer 7) Heavy lift engineer 8) Structures Division representative 9) Resident engineer 10) Public involvement liaison.
G.Monitoring Plan for review.
1.Submit as working drawings or as a manual.
2.Include at least the following:
a.Description and details of the move monitoring system. 1) Refer to this Section, 3.4C for minimum requirements.
b.Measuring equipment, procedures, required measurements, and locations of geometry control reference points on the bridge and in the bridge staging area. 1) Measurements may be elevations, dimensions, or other readings.
c.Pre-move and move monitoring.
d.Warning levels and absolute limit levels 1) Define allowable tolerances and warning levels. a) Set displacement limits to avoid damage to the bridge during the move. b) Set displacement limits that are less than or equal to the limits defined in the contract plans
e.Minimum detectable movements and system accuracy.
f.Potential remedial actions that must be implemented when measurements exceed the warning levels.
g.Required measurements and when they are taken and recorded . 1) Refer to this Section, 3.4C for minimum requirements.
H.Post move and pre- opening work for review.
1.List activities and anticipated time frames for work requiring completion before opening the bridge to traffic.
Part 2 — Products
2.1 Materials
A.Concrete
1.Refer to Section 03055.
B.Reinforcing Steel
1.Refer to Section 03211.
C.Penetrating Concrete Sealer
1.Refer to Section 03392.
D.Driven Piles
1.Refer to Section 02455.
E.Structural Steel
1.Refer to Section 05120.
F.Timber
1.Refer to Section 06055.
G.Concrete Coating
1.Refer to Section 09981.
Part 3 — Execution
3.1 General Requirements
A.Move the bridge to its final location without damage and loss of strength .
B.Use methods and procedures t hat provide adequate safety to the general public during:
1.Construction activities
2.Structure move
3.Erection
C.Use heavy lift equipment and falsework placed over or adjacent to traveled roadways, navigational or recreational waterways , pedestrian facilities , and any existing commercial, industrial , or other facilities.
3.2 Bridge Temporary Works
A.Construct bridge temporary works according to the authorized working drawings.
B.Verify the following before constructing the new bridge.
1.The t emporary support structures are constructed according to authorized working drawings .
2.The support surfaces are constructed to the required elevations and tolerances with sufficient clearances to accommodate the heavy lift system.
C.Embedded Items
1.Verify that all Embedded Items are in their correct locations and elevations according to the authorized working drawings and before casting concrete in the permanent bridge .
D.Concrete Casting and Curing
1.Concrete Placement
a.Refer to Section 03310.
2.Concrete Curing
a.Refer to Section 03390.
3.3 Preparation for Bridge Move
A.Safety and Communication
1.Review the authorized S afety and Communication Plans with all personnel involved with the bridge move.
a.Include at least the engineer of record, safety supervisor, heavy lift engineer, contractor’s engineer, resident engineer , and Structures Division representative.
2.Conduct a safety meeting immediately before the bridge move to address unforeseen, variable factors with all personnel involved.
B.Heavy Lift System such as jacking, cribbing, raising , and lowering
1.Follow the authorized Lifting, Transporting, and Setting Plan for jacking, cribbing, raising, and lowering the bridge.
a.Adhere to the limitations for jacking with regard to corresponding stability conditions for the heavy lift system and falsework.
2.Implement Contingency Plan in the event of a major breakdown or equipment malfunction.
3.4 Bridge Lift Ing, Transport Ing, and Setting
A.Follow the authorized Lifting, Transporting, and Setting Plan.
B.Do not lift or attempt to move the bridge until it has attained a minimum age of 21 days since the last casting operation and has attained the specified 28 day minimum compressive strength, unless otherwise authorized.
C.Monitor the bridge during lifting, transporting, and setting according to the authorized Monitoring Plan.
1.Provide a monitoring system capable of the following:
a.Measuring the change in bridge camber at initial lift.
b.Measuring the relative twist between adjacent lines of supports at initial lift and during the move.
c.Measuring the relative change in elevation between adjacent lines of support at initial lift and during the bridge move. 1) This measurement is not required for bridges moved with two lines of supports.
d.Indicating when bridge measurements exceed warning levels and absolute limit levels.
2.Take and record measurements at least as follows:
a.Before beginning the move 1) Set the move monitoring system. 2) Monitor the bridge through a typical daily temperature cycle using the monitoring system used during the move. a) Record measurements just before dawn of each day and when the bridge reaches the approximate maximum temperature.
b.Immediately before the initial lift. 3) Record the initial measurements. a) Initial measurements establish the baseline condition of the bridge.
c.Immediately after the initial lift. 1) Record measurements and compare the bridge to the baseline condition. 2) Calculate the deflection change as the difference between the condition just before to just after the initial lifting of the bridge. 3) Verify that measurements are within tolerance limits.
d.During the bridge move 1) Continuously monitor the bridge.
e.When the bridge is aligned and ready for setting, but is not in contact with the final supports.
f.After setting the bridge in its permanent location. 1) Record a final set of monitoring system measurements. 2) Verify that measurements are within anticipated and allowable tolerance limits specified for permanent elevations.
D.Limit deflection change, twist, and other measurements to the limits defined in the authorized Monitoring Plan.
3.5 Setting Tolerances
A.Bridge Alignment : Location and Clearances
1.Comply with the following f or the final condition of the span after move :
a.Do not exceed 1 inch m aximum deviation at each end of span from overall longitudinal alignment of an individual span after setting.
b.Do not exceed 1 inch m aximum deviation from overall transverse location for example for longitudinal position at each line of bearings .
c.Limit the m aximum alignment deviation in both primary plan directions at each end of the span or spans being set to not more than 1 inch or to that required for the accommodation of manufactured expansion joint components and bearings, whichever is less.
d.Keep individual elements or surfaces within 1 inch of location with respect to similar matching surfaces at expansion joints such as plane of web or parapet) of adjacent spans, bent , or abutment features in the absence of other constraints .
B.Bridge Bearings : Elevation and Location
1.Keep the elevations of the bridge bearings for the prefabricated bridge within plus or minus 1/8 inch of required elevations, unless tighter tolerances are required in the plans and the authorized shop drawings.
2.Keep t he plan location of bridge bearings with respect to the girders within the limits shown and the authorized bearing shop drawings.
3.Address elevation and plan location deviations that do not meet the tolerances according to the authorized Lifting, Transporting, and Setting Plan.
C.Expansion Joints
1.Keep the elevations and alignments of surfaces of adjacent spans to accommodate expansion joint devices within plus or minus 1/8 inch of dimensioned locations , unless tighter tolerances are required according to the expansion joint manufacturer or as shown and in authorized expansion joint shop drawings.
2.Address deviations that do not meet the tolerances according to the authorized Lifting, Transporting, and Setting Plan.
3.6 Bridge Assessment and Remediation
A.Visually inspect the bridge and substructure in the presence of the Engineer post move and before opening bridge to traffic.
1.Identify spalling and cracking that requires repair.
a.Indicate whether the repair must be completed before opening to traffic or if the repair can be completed at a later date.
B.Repair spalling. Refer to Section 03924.
C.Repair cracks
1.Refer to Table 1 for classification of crack treatments. Table 1 Crack Treatments Crack Width Location Treatment Related Section(s) Less than or equal to 0.016 inches Substructure and superstructure Penetrating concrete sealer or concrete coating per project requirements Refer to 03392 Greater than 0.016 inches and up to and including
0.25 inches Substructure
and superstructure Epoxy injection Refer to 03924 Greater than 0.25 inches Substructure and superstructure Delamination repair and penetrating concrete sealer or concrete coating per project requirements Refer to 03392 and 03924
3.7 Restoration of Or Iginal Conditions
A.Restore conditions of the bridge staging area, travel path, and demolition site according to the agreements with each property owner and to the satisfaction of the Engineer .
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 1041–1054 of 1,331.