Examples from Elsewhere

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Examples from Elsewhere

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Examples from Elsewhere. Low Level Bridge, Edmonton. Opened 1902. On City of Edmonton's 'A' List of the Register of Historic Resources. Rehabilitation Project 2006. Assessment: deterioration of structural steel paint coating, corrosion of steel truss web members and bottom chords. - PowerPoint PPT Presentation

Transcript of Examples from Elsewhere

Page 1: Examples from Elsewhere

Examples from Elsewhere

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Low Level Bridge, Edmonton

Opened 1902.On City of Edmonton's 'A' List of the Register of Historic Resources

Rehabilitation Project 2006.

Assessment: deterioration of structural steel paint coating, corrosion of steel truss web members and bottom chords.

Rehabilitation Strategy:  to maintain the bridge for 25 -50 years. Work to ensure that the appearance and character of the bridge will be maintained.Major structural steel repairs; grit blasting and painting of the bridge; repairs to the concrete deck; widening of the sidewalk; other minor structural repairs. Environmental considerations are at the forefront of discussions on work strategy.

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Low Level Bridge, Edmonton

Jim Montgomery P. Eng., structural engineering partner …“The biggest challenge with this project was the replacement of nearly half of the main structural members without disrupting the river below. As a team, we were also very conscious of maintaining the historical integrity of the bridge while upgrading its strength and durability with 21st century materials. We are thankful to the City of Edmonton for their great client performance and teamwork, and to everyone on the project team for the strength of their contributions.”

 

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Minto Bridges, Ottawa

Constructed: 1900-1902

Designated HeritageProperty

City of Ottawa

Rehabilitation Project: 1995-96Assessment: Immediate need for critical structural retrofitting-coating and structural work.Funding approved under Canada-Ontario Infrastructure Program

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Alexander Bridge, Ottawa-Hull

Built 1898-1901.

Designated by the Canadian Society of Civil Engineers as a 'National Historic Civil Engineering Site'.

Rehabilitation Project: 2005, Buckland and Taylor Ltd. (well-known in field)

Rehabilitation plan: strengthen and retrofit steel structure and piers and increase their seismic capacity; replace centre lane concrete deck; replace wooden boardwalk; install inspection walkways; install damping mechanisms to address the vibration of the structure. Environmental considerations.

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Hartman Bridge, Waterloo, Ont.

Constructed in 1936Designated Heritage Structure8 panel Pratt through truss, with riveted connections. Centerpiece for New Hamburg, uniting the east and west sides of town.

Rehabilitation Project: 2004-05Assessment:  Increasing frequency of localized deck failures expected. Corrosion of the steel trusses.

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Quebec BridgeOpened 1919.At that time it was the longest cantilever, steel truss railway bridge in the world.A National Historic Site.

Photo Credit: Urek Jurek WyderRehabilitation Project1998-2007

Used an innovative technique of waterjetting and selective water cleaning, which cut the estimated cost in half - using ultrahigh pressure (30,000+ psi). This level of pressure easily removes rust scale and all coatings“. Ref: Environmental Science and Engineering. June 2001. (www.esemag.com).

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Examples from the USA

Following Examples are via the Historic Bridges Organization of North America

www.historicbridges.org

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East Delhi Road Bridge, Michigan

The (about) 120-year-old East Delhi Bridge, originally erected in the village of Delhi Mills, was closed in 2005 due to severe deterioration. 

Similar to Traffic Bridge - deteriorated to the point where it had to be closed.

The one-lane bridge was reopened to vehicular traffic in August 2009 and now has traffic lights controlling how vehicles can cross the river.

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Calhoun Street Bridge, New Jersey

Restoration Project: 2010 Public-involvement process

helped guide the project team.

Built in 1884.The bridge is a Phoenix

Pratt truss, the longest through-truss bridge in the Commission's 20-bridge inventory.

Registered as a National Historic

Place

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6th Street Bridge, Kent County MI Grand Rapids

Constructed in 1886, this bridge is made of wrought iron

535 foot span, restored as a fitting tribute to its builder, the Massillon Bridge Company of Massillon Ohio.

This bridge is a perfect example of the sort of treatment that all truss

bridges should be receiving. Restored in its original location, this bridge continues to serve its original purpose of carrying vehicular traffic.

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Our Consultants tell us…● Each of the three options has a significant contingent of community

support. All three options address City Council’s directive that vehicular, cycling and pedestrian traffic modes all be accommodated. The main differences between the options lie in the estimated capital and operating costs, the heritage value, level of function, and aesthetics.

● The heritage value of the Traffic Bridge resides in the following character-defining elements:

● • Those elements which speak to its status as a landmark in the community, including its form and massing and its location on its original site;

● • Those elements that reflect the property’s engineering technology, such as being the Steel truss architecture; and

● • Those elements that reflect the development of Saskatchewan’s early concrete quality control testing methods as demonstrated by the original large concrete piers and abutments.

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Our engineers know we can...

There are numerous Best Practices as shown, and companies that are well versed in such projects to indicate this is doable.

“I can only assume the Traffic Bridge is like 90% of truss bridges and the severe section loss is isolated to areas around the deck level. - Nathan Holth, Historic Bridges of North America

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Our OpportunityLet’s get the best information before us to ensure the

best rehabilitation and...

- fix what CAN be fixed

-modify what CAN and SHOULD be modified

-and replace where replacement is NEEDED.

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Our National Treasure: Education Nationally, it represents a critical period in the settlement

of Western Canada, the years 1896 to 1911, when the vast majority of settlers arrived here and when cities such as Saskatoon developed as regional service centres to their rural and agriculture hinterlands.

This was the culmination of Sir John A. MacDonald's National Policy …and is thus symbolic of, Saskatoon's transition from settlement to city, it is more representative of these larger events in Canadian history than it would be otherwise

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Our National Treasure: Architecture

The Traffic Bridge is architecturally significant in that it is one of the few, and possibly the oldest, surviving examples in Canada of a riveted, Parker through-truss bridge of the “camel back” style.

Saskatoon's Traffic Bridge may be the longest and oldest of the bridges in this style.

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Our National Treasure: Added Revenue

Programming, Education, FUNCTION

and added Tourism....

WIN, WIN, WIN...

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Our recommendation… The Saskatoon Heritage Society supports the

recommendations of the MHAC to rehabilitate the Traffic Bridge and designate it municipally and pursue provincial and national designation

Our Traffic Bridge is listed on the “Holding Bylaw” currently – illustrating publicly the value of this founding

bridge as an important landmark.

The Planning & Development Branch have provided significant rationale for

pursuing designation due to its historic significance and potential for funding.

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● Additional Information…

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