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From page 30... ... 30 Individuals from five state agencies were interviewed by telephone and e-mail for case examples to identify and collect additional information on bridge demolition practices prior to and during the demolition process. Information collected through the interviews included • Bridge type and extent of demolition; • Information provided to the bidders; • Agency specifications or special provisions at the time; • Requirements (drawings, calculations, procedures, and equipment) Read the entire page →
From page 31... ... Case Examples 31 State Bridge Type Location/ Year Built Demolition Type/Year Special Provisions Demolition Submittal Project Oversight Success of Demolition Alaska 3 spans, steel, cantilevered truss Alaskan Highway, Tok. Year unknown Yes Illinois Yes Yes, sealed by Illinois structural engineer. Read the entire page →
From page 32... ... 32 Bridge Demolition Practices Case Example 1: Alaska Department of Transportation and Public Facilities Bridge Type and Extent of Demolition Tanana River Bridge was a 946-feet-long, 30-feet-wide, three-span cantilevered truss bridge. The bridge was constructed in 1943–1944 as part of the Alaska Highway. Read the entire page →
From page 33... ... Case Examples 33 4. Detailed plans showing how the structure will be prepared for demolition. Read the entire page →
From page 34... ... 34 Bridge Demolition Practices Case Example 2: Illinois Department of Transportation Bridge Type and Extent of Demolition Structures SN 016-1030 and SN 016-0461 were built in 1952 and 1950, respectively, and are part of the Jane Byrne Intersection (I-290/I-90) in downtown Chicago. Read the entire page →
From page 35... ... Case Examples 35 SECTION 501. REMOVAL OF EXISTING STRUCTURES 501.05 COMPLETE AND PARTIAL REMOVAL OF STRUCTURES Caution should be taken when the plans require removal of existing structures or portions of existing structures. Read the entire page →
From page 36... ... 36 Bridge Demolition Practices Preconstruction/Demolition Meetings Construction coordination meetings were held between the contractor and Illinois DOT construction inspection staff. At one of those meetings or at a separate meeting, prior to beginning the work, the demolition plan was discussed and reviewed. Read the entire page →
From page 37... ... Case Examples 37 Case Example 3: Minnesota Department of Transportation Bridge Type and Extent of Demolition Bridge No. 62881 was a 234-foot simple two-span flared bridge, with 54-inch-deep prestressed beams on concrete abutments and piers. Read the entire page →
From page 38... ... 38 Bridge Demolition Practices water. A formal submittal of a demolition plan was to be submitted well in advance of the actual demolition. Read the entire page →
From page 39... ... Case Examples 39 maintain the initial strength of the member. At specific cutlines, as noted and detailed in the Plans, additional reinforcement will be required to supplement the in place reinforcement. Read the entire page →
From page 40... ... 40 Bridge Demolition Practices Lessons Learned and Changes In this instance, the agency's inspector was on site but the contractor's engineer who prepared the demolition plan was not present. The demolition took place on a full weekend closure of I-94, a weekend that was one of several windows pre-arranged and identified in the contract as permissible with advance notification and traffic control advertisements. Read the entire page →
From page 41... ... Case Examples 41 Case Example 4: Pennsylvania Department of Transportation Bridge Type and Extent of Demolition SR 0219 was a 67-foot simple span, cast-in-place concrete ribbed rigid frame bridge on concrete abutments built in 1912, as shown in Figure 17. The extent of the demolition project was a three-stage superstructure removal that resulted in a partial collapse. Read the entire page →
From page 42... ... 42 Bridge Demolition Practices Agency Specifications or Special Provisions at the Time At the time of construction, it was Pennsylvania DOT's specification for bridge demolition, Publication 408/2011 (Change No. Read the entire page →
From page 43... ... Case Examples 43 greater than 80 feet. Within the submittal, the contractor must provide methods for the protection and safety of the general public and public utilities, equipment to be used, debris containment system to be used, and a schedule of operations to be presented at a preconstruction meeting. Read the entire page →
From page 44... ... 44 Bridge Demolition Practices Case Example 5: Rhode Island Department of Transportation Bridge Type and Extent of Demolition Beginning in 2003 and ending in 2013 there were 15 bridges demolished to make way for the I-195 Relocation Project. The bridges involved were steel girder bridges composite with concrete decks, both single span and multispan bridges. Read the entire page →
From page 45... ... Case Examples 45 Lessons Learned and Changes The bridge demolition was completed as planned, and no changes to demolition procedures were made. Stability computations for the bridges based on the demolition methods used were reviewed and approved and that process will be continued in the future. Read the entire page →

From page 30...

... 30 Individuals from five state agencies were interviewed by telephone and e-mail for case examples to identify and collect additional information on bridge demolition practices prior to and during the demolition process. Information collected through the interviews included • Bridge type and extent of demolition; • Information provided to the bidders; • Agency specifications or special provisions at the time; • Requirements (drawings, calculations, procedures, and equipment)